RBSE Solutions Class 10 Science Chapter 14 Economic Importance of Plants and Animals

I. Multiple Choice Questions

Question 1: Which of these plants is not a cereal?
(a) Wheat
(b) Rice
(c) Barley
(d) Gram
Answer: (d) Gram
In simple words: Cereals like wheat and rice are grains we eat often. Gram is a pulse, not a cereal, making it the odd one out.

🎯 Exam Tip: Remember that cereals are primarily grass family grains, while pulses are legumes. Knowing common examples for each category helps.

Question 2: Timber comes from which part of a plant?
(a) Primary phloem
(b) Tertiary phloem
(c) Primary xylem
(d) Tertiary xylem
Answer: (d) Tertiary xylem
In simple words: Timber, which we use as wood, is made from a special kind of plant tissue called tertiary xylem. This part helps the plant grow strong and tall.

🎯 Exam Tip: Focus on understanding that timber is essentially wood, and wood comes from the xylem tissue, specifically the secondary/tertiary xylem in mature plants.

Question 3: Which part of opium plant is of medicinal importance?
(a) Root
(b) Stem
(c) Flower
(d) Fruit
Answer: (d) Fruit
In simple words: The important chemicals from the opium plant, used in medicine, are found in its fruit. This fruit is where the valuable compounds are stored.

🎯 Exam Tip: For medicinal plants, always specify the exact part of the plant from which the beneficial substances are obtained, as it varies greatly.

Question 5: Which vegetable comes from inflorescence?
(a) Potato
(b) Cauliflower
(c) Ladyfinger
(d) Tomato
Answer: (b) Cauliflower
In simple words: Cauliflower is a special vegetable because it's actually the flower head of the plant, not a root, stem, or fruit. We eat its undeveloped flower cluster.

🎯 Exam Tip: Many common vegetables are classified by the plant part they represent (root, stem, leaf, flower, fruit). Knowing this helps with identification.

Question 6: Which of the following is the name for rearing of honeybees?
(a) Sericulture
(b) Silviculture
(c) Apiculture
(d) All of these
Answer: (c) Apiculture
In simple words: When people raise honeybees to get honey and wax, this practice is called apiculture. It's a way to farm bees for their useful products.

🎯 Exam Tip: Distinguish between different types of animal husbandry: sericulture (silk worms), apiculture (honeybees), pisciculture (fish), etc.

Question 7: A beehive has how many types of honeybees?
(a) One
(b) Two
(c) Three
(d) Four
Answer: (c) Three
In simple words: A honeybee colony has three main types of bees: the queen, drones (males), and worker bees (females). Each type has a different role.

🎯 Exam Tip: Remember the social structure of bees and the specific roles played by each type for the colony to thrive.

Question 9: Which is the main produce of poultry farming?
(a) Egg
(b) Wool
(c) Milk
(d) All of these
Answer: (a) Egg
In simple words: Poultry farming mainly focuses on raising birds like chickens to produce eggs and meat. Eggs are a primary product people get from this type of farming.

🎯 Exam Tip: Clearly identify the primary output for different types of animal farming, such as eggs/meat for poultry, milk/meat for dairy, wool/meat for sheep.

Importance of Plants and Animals Very Short Answer Type Questions

Question 10: Give an example of cereal which is grown as Rabi crop.
Answer: Wheat. Wheat is a common cereal that thrives during the winter months, making it a Rabi crop. These crops are planted in autumn and harvested in spring.

🎯 Exam Tip: Recall the two main cropping seasons in India: Rabi (winter crops like wheat, barley) and Kharif (monsoon crops like rice, maize). Give at least one clear example for each.

Question 11: Write the names of two high yielding varieties of wheat.
Answer: Sonalika, Kalyan Sona. These two wheat varieties are known for producing a large amount of grain, which is important for food security. They were developed to improve crop yields.

🎯 Exam Tip: When asked for examples of varieties, try to remember two distinct names to show broader knowledge.

Question 12: Which pulse contains highest amount of protein?
Answer: Soyabean. Soyabean is widely recognized as an excellent source of protein, making it very valuable for vegetarian diets. It contains all essential amino acids.

🎯 Exam Tip: Know common protein sources, especially plant-based ones, as they are often highlighted for their nutritional value.

Question 14: What is timber?
Answer: Timber is wood used for making various items like furniture, doors, and windows. It comes from trees and is processed to be strong and durable for construction and crafting. It is valued for its strength and aesthetic appeal.

🎯 Exam Tip: Define timber by its source (wood from trees) and its primary uses (construction, furniture), highlighting its key characteristics.

Question 15: Write scientific names of two medicinal plants.
Answer: Ocimum sanctum (Tulsi), Centella asiatica (Brahmi). These plants have been used for a long time in traditional medicine to treat various illnesses. They contain natural compounds that have healing properties.

🎯 Exam Tip: When providing scientific names, ensure correct capitalization and italicization (Genus capitalized, species lowercase, both italicized). Also, include common names if possible.

Question 16: Which is the state flower of Rajasthan?
Answer: Rohira. The Rohira flower is a beautiful symbol of Rajasthan's natural heritage. It adapts well to the desert environment.

🎯 Exam Tip: Be aware of state symbols (flower, tree, animal) for your region as they are common general knowledge questions.

Question 17: Write the names of two indigenous breeds of buffalo.
Answer: Murrah, Mehsana. These are native buffalo breeds that are well-suited to local conditions and known for their high milk production. They are important for dairy farming in India.

🎯 Exam Tip: Learn about important indigenous breeds of livestock as they are often emphasized for their local adaptation and productivity.

Question 18: What are the two products of apiculture?
Answer: Honey and wax. Honeybees produce delicious honey, which is a natural sweetener, and beeswax, which is used in many products like candles and cosmetics. Both are valuable resources obtained from beekeeping.

🎯 Exam Tip: List both primary products of apiculture. Honey is obvious, but don't forget wax.

Question 19: Silk moth is reared on leaves of which tree?
Answer: Mulberry. Silk moths eat mulberry leaves, which are essential for their growth and silk production. The quality of silk is directly linked to the diet of the silkworm.

🎯 Exam Tip: Connect the specific food source (mulberry leaves) to the product (silk) when discussing sericulture.

Question 20: Which type of water is better for fishery?
Answer: Fresh water. Fresh water environments like rivers and ponds are generally more suitable for raising many types of fish for food. This is because most commercially farmed fish are freshwater species.

🎯 Exam Tip: For fishery, consider the common types of fish farmed and their natural habitats to determine suitable water types.

Question 22: Write the name of any one indigenous breed of sheep.
Answer: Marwari. The Marwari sheep is a native breed found in India, known for its strong wool and ability to survive in tough conditions. It is well-adapted to the dry climate of Rajasthan.

🎯 Exam Tip: When naming indigenous breeds, specify both the breed and the animal it belongs to for clarity.

Importance of Plants and Animals Short Answer Type Questions

Question 23: Write the scientific names of two cereal plants.
Answer: The scientific names for some cereal plants are:
(a) Wheat: Triticum aestivum
(b) Rice: Oryza sativa
(c) Maize: Zea mays
(d) Pearl millet: Pennisetum typhoides. These cereals provide essential energy and are a staple food for many people around the world. Each cereal has unique growing conditions.

🎯 Exam Tip: Remember to italicize scientific names and capitalize the genus while keeping the species in lowercase. Providing a few examples is always good.

Question 24: Write the names of four plants which give spice.
Answer: Four plants that provide spices are as follows:
(a) Clove
(b) Cardamom
(c) Cinnamon
(d) Fenugreek. Spices are used to add flavor and aroma to food, and many also have medicinal properties. They are often dried parts of plants like bark, seeds, or buds.

🎯 Exam Tip: Think of common spices you use and then recall which plant part they come from to identify the plants themselves.

Question 25: What is timber? Give an example of timber plant.
Answer: Timber is wood that is used for making things like furniture, doors, and windows. It's a valuable material because it is strong and can be shaped. Teak is a good example of a timber plant, known for its durable and beautiful wood. Timber provides natural, sustainable material for building.

🎯 Exam Tip: A complete answer should define the term and provide a clear example, emphasizing the practical use of the plant.

Question 27: Write names of two oilseed plants.
Answer: Mustard, groundnut. These plants are grown to extract oil from their seeds, which is used for cooking or other purposes. Both mustard and groundnut oils are popular in many cuisines. Oilseeds are crucial for dietary fats and industrial applications.

🎯 Exam Tip: Focus on plants whose primary use is for oil extraction from their seeds. Common cooking oils are good examples.

Question 28: What is the need for animal husbandry?
Answer: Animal husbandry is needed to get milk, dairy products, and leather from animals. Some animals are also used to plough fields and pull carts. It gives farmers extra money, which helps poor people in villages. This practice helps ensure food security and economic stability in rural areas.

🎯 Exam Tip: List the multiple benefits of animal husbandry, covering both products (milk, leather) and services (tilling, transport), as well as economic impact.

Question 29: How is silk obtained from cocoon?
Answer: The cocoon is placed in hot boiling water for some time. This helps to loosen the silk threads from the cocoon. After this, the silk is carefully wound onto a spindle. This process is called reeling. Finally, the silk fiber is spun into silk thread. This delicate process extracts the fine silk filament.

🎯 Exam Tip: Explain the key steps clearly: boiling, reeling, and spinning, highlighting how the continuous silk thread is extracted.

Question 30: Write the names of two diseases of hens.
Answer: Ranikhet, Avian influenza. These are common diseases that can affect chickens and other birds, causing significant losses in poultry farms. Preventing these diseases is vital for healthy poultry farming.

🎯 Exam Tip: Learn common diseases related to major farmed animals. Knowing two examples is usually sufficient.

Question 31: Write the names of two indigenous breeds of cow and buffalo.
Answer: For buffalo, two indigenous breeds are Murrah and Mehsana. For cow, two indigenous breeds are Devaki and Sindh. These native breeds are well-adapted to the local climate and are important for milk and agricultural purposes. They have been bred over generations for specific traits.

🎯 Exam Tip: Ensure you provide examples for both cow and buffalo as requested, specifying which breed belongs to which animal.

Question 32: Which types of honeybee are found in a beehive? Write their names.
Answer: Three types of honeybees are found in a beehive:
1. Queen Bee
2. Drones (male bees)
3. Worker Bees (female bees). Each type has a unique role, ensuring the survival and productivity of the colony. The queen lays eggs, drones fertilize the queen, and workers do all the other tasks.

🎯 Exam Tip: Clearly list the three types of bees and briefly mention their primary function to show complete understanding.

Importance of Plants and Animals Long Answer Type Questions

Question 33: Write an essay on food plants.
Answer: Living beings need energy for all their body functions, and this energy comes from food. Plants are the primary source of food for humans and many animals. Some important food-providing plants include:
• Cereals: These are the most vital food source, coming from grass plants like wheat, rice, maize, millet, and barley. They are rich in starch, which is our body's main energy provider.
• Pulses: Pulses, such as gram, red gram, and pea, are a main source of protein for vegetarians. They belong to the legume family.
• Oil Yielding Plants: These plants give us vegetable oils, which are complex carbon compounds. Examples include mustard oil and sunflower oil, used in cooking.
• Important Spices: Spices like black pepper, cumin, red chilli, and cardamom are essential in cooking for flavor and aroma. Many also have health benefits.
• Beverages: Tea and coffee are popular drinks made from plant parts. Tea leaves come from the Camellia sinensis plant, and coffee beans come from Coffea Arabica.
• Vegetables: Vegetables are a key part of a balanced diet, offering vitamins, minerals, fiber, and water. They can be roots (like carrots), stems (like potatoes), leaves (like spinach), flowers (like cauliflower), or fruits (like tomatoes).
• Fruits: Fruits are the ripened ovaries of flowering plants, often eaten raw. Jams, jellies, and squashes are also made from fruits. Fruits are sweet and nutritious.
In simple words: Plants give us all the food we need to live and grow. This includes cereals for energy, pulses for protein, oils for cooking, spices for flavor, and fruits and vegetables for vitamins. Even drinks like tea and coffee come from plants.

🎯 Exam Tip: For an essay-type question, structure your answer with clear headings or bullet points for different categories of food plants. Provide specific examples for each category.

Question 34: Explain medicinal plant.
Answer: Plants are a very important source of natural chemicals that are used to make medicines. These chemicals can be found in different parts of plants like roots, stems, leaves, flowers, fruits, and seeds. Many traditional medicines rely on these plant compounds. Some important medicinal plants are:

These plants are important for health and healing across many cultures. They are studied to discover new medicines.
In simple words: Medicinal plants are those from which we get substances to make medicines. Different parts of these plants, like roots or leaves, have healing powers. Examples include Tulsi and Aloe Vera, which help us stay healthy.

🎯 Exam Tip: When listing medicinal plants, remember to include both their common names and scientific names, and briefly mention their uses.

Question 35: Explain fibre and timber producing plants.
Answer:
**Fibre Producing Plants:** Plant fibres are very useful to us. Different parts of plants have thick cell walls that are used to make clothes, ropes, and bags. These strong parts are called fibres. Some plants that give us fibres include jute, cotton, and coconut.
- Jute is used for making ropes, gunny sacks, and carpets.
- Coir, from coconut, is used for ropes, carpets, and mattresses.
- Cotton, which comes from the cotton plant's seedpod, is used for making clothes and wound dressings.

**Timber Producing Plants:** Timber is a very important material for building houses, which is a basic human need. The woody part of perennial plants (trees) is called wood or tertiary xylem, and this wood is used for furniture, windows, and doors. Wood used for these purposes is called timber. Some trees that produce timber are teak, shal, sheesham, and deodar. Timber provides durable materials for construction and crafts.
In simple words: Fibre plants give us materials like cotton for clothes and jute for ropes. Timber plants give us strong wood, like teak, which we use to make furniture and build houses. Both are very important natural resources.

🎯 Exam Tip: Clearly separate your explanation for fibre and timber plants. For each, give examples of plants and their specific uses, highlighting their importance.

Question 36: Write a note on dairy farming.
Answer: People have been raising animals for milk for a very long time. Milk production is a key part of the dairy industry. Buffaloes are especially important for milk production in India, as they contribute most of the country's milk. Some important types of buffalo include Zafrabadi, Murrah, Sukhi, Bhadawari, and Mehsana. Important breeds of cow are Gir, Sahiwal, Sindh, and Devaki. Dairy farming provides food, income, and helps the economy in rural areas.
In simple words: Dairy farming is about raising animals, mostly cows and buffaloes, to get milk and other milk products. This helps people earn money and provides food for many families.

🎯 Exam Tip: In your note, mention the main animals involved, the key product (milk), the economic importance, and give examples of popular breeds.

Question 37: Explain the differences in honeybees in a beehive. Comment on significance of this division.
Answer: A beehive contains different types of honeybees, each with a specific role. This division of labor is crucial for the colony's survival and efficiency.
1. **Queen Bee:** There is usually only one queen bee in a hive, and she is the largest. Her main job is to lay all the eggs to ensure the beehive has many new bees.
2. **Drones:** These are the male bees, and there are only a few of them. Their main role is to mate with the queen bee.
3. **Worker Bees:** These are sterile female bees, and they make up the majority of the hive's population. They do almost all the work, such as collecting pollen and nectar from flowers, feeding the baby bees (larvae), and building the beehive and making honey. This teamwork allows the colony to function smoothly.
In simple words: A beehive has three types of bees: a queen (lays eggs), drones (males for mating), and workers (females that do everything else like gathering food and making honey). Each bee has its own job, which helps the whole group work well together.

🎯 Exam Tip: Clearly list the three types of honeybees and describe their distinct functions. Explain that this "division of labor" is important for the colony's success.

Question 38: Explain the life cycle of silkworm.
Answer: The life cycle of a silkworm involves several stages:
• **Adult (Moth):** The adult silkworm is a moth, usually pale brown.
• **Eggs:** The female silk moth lays eggs, typically on mulberry leaves. These eggs are collected by silk farmers.
• **Larva (Silkworm):** The eggs hatch into larvae, which are also called silkworms. These larvae eat a lot of mulberry leaves and grow very quickly, increasing their size many times over. The larva has special silk glands that release a liquid protein, which hardens into a fiber when it touches the air.
• **Cocoon or Pupa:** Once the silkworm grows to about 7.5 cm, it stops eating and starts spinning a cocoon around itself using the silk fiber. Inside the cocoon, the larva changes into an inactive stage called a pupa. Each cocoon can provide a very long silk thread, sometimes over 1000 meters. This transformation is key to silk production.
In simple words: The silk moth lays eggs, which hatch into silkworms (larvae). The silkworm eats mulberry leaves and grows, then spins a cocoon around itself. Inside the cocoon, it turns into a pupa, and later, a moth comes out.

🎯 Exam Tip: Outline the four main stages of the life cycle (egg, larva, pupa, adult) and briefly describe what happens in each stage, especially focusing on cocoon formation.

Question 39: What is the importance of fishery and poultry farming?
Answer: The importance of fishery and poultry farming can be seen in several ways:
**Fishery:**
1. **Food Source:** Fishery provides a rich source of protein, especially fish, which is a key food item for many people around the world.
2. **Income Generation:** It creates jobs for fishermen, processors, and traders, helping them earn a living.
3. **Nutritional Value:** Fish are full of essential nutrients like Omega-3 fatty acids, which are good for health.

**Poultry Farming:**
1. **Eggs and Meat:** Poultry farming primarily produces eggs and meat (chicken, duck, etc.), which are affordable and highly nutritious food sources.
2. **Economic Benefits:** It provides a steady source of income for many farmers, both in urban and rural areas.
3. **Poverty Alleviation:** These activities can help reduce poverty in villages by providing employment and food security to local communities.
Both fishery and poultry farming are vital for food security and the economy, especially in developing regions.
In simple words: Fishery gives us fish to eat and provides jobs for people. Poultry farming gives us eggs and chicken meat, and it also helps farmers earn money. Both are important for food and for helping people in villages.

🎯 Exam Tip: Divide your answer into two parts (Fishery and Poultry Farming). For each, list 2-3 key points about their importance, such as food provision, economic benefits, and nutritional value.

Importance of Plants and Animals Additional Questions Solved

I. Multiple Choice Questions

Question 1: Cereals come from which part of a plant?
(a) Fruit
(b) Seed
(c) Flower
(d) Stem
Answer: (b) Seed
In simple words: Cereals are essentially the edible seeds of certain grass plants. We harvest and eat these seeds as our main food source.

🎯 Exam Tip: Remember that cereals like wheat and rice are grains, which are botanically classified as seeds. This helps understand their function in plant reproduction.

Question 2: Which of the following belong to the grass family?
(a) Cereals
(b) Pulses
(c) Vegetables
(d) Oilseeds
Answer: (a) Cereals
In simple words: Cereals are a type of plant that grow like grass, such as wheat and rice. They are part of the big grass family.

🎯 Exam Tip: Knowing the plant families to which important crops belong (e.g., Poaceae for cereals, Leguminosae for pulses) helps in classification and understanding their characteristics.

Question 3: Which of the following can grow well even in water deficient areas?
(a) Wheat
(b) Rice
(c) Millet
(d) Maize
Answer: (c) Millet
In simple words: Millets are special crops that don't need a lot of water to grow. This makes them perfect for places where there isn't much rain.

🎯 Exam Tip: Identify crops that are drought-resistant, as these are important for agriculture in dry regions and for food security.

Question 4: Opium comes from which part of the plant?
(a) Root
(b) Stem
(c) Leaves
(d) Opium
Answer: (d) Opium
In simple words: Opium is collected from the fruit (poppy capsule) of the opium poppy plant. It's a milky sap taken from unripe fruits.

🎯 Exam Tip: Be precise about the plant part. For opium, it's the fruit capsule, specifically the latex inside.

Question 5: Potato comes from which part of the plant?
(a) Root
(b) Stem
(c) Leaves
(d) Flower
Answer: (b) Stem
In simple words: Even though potatoes grow underground, they are actually a modified stem of the plant. They are special underground stems called tubers.

🎯 Exam Tip: Understand modified plant parts. Potatoes are tubers (modified stems), not roots, despite growing underground.

Question 6: Which of the following is an important state for wool production?
(a) Rajasthan
(b) Bihar
(c) West Bengal
(d) Orissa
Answer: (a) Rajasthan
In simple words: Rajasthan is a big state for producing wool because many sheep are raised there, especially in the dry areas. The climate there is suitable for sheep farming.

🎯 Exam Tip: Connect major agricultural products with the regions or states that are known for their production, especially for animal products like wool.

Importance of Plants and Animals Very Short Answer Type Questions

Question 1: What is the name of fibre from coconut tree?
Answer: Coir. Coir is a tough, natural fiber taken from the husk of coconuts. It is strong and resistant to saltwater, making it useful for many products. This fiber is known for its durability.

🎯 Exam Tip: Recall specific fibers from different plants. Coir is unique to coconut husks.

Question 2: Name any two spices which come from underground stem.
Answer: Ginger and Turmeric. Both ginger and turmeric are rhizomes, which are modified underground stems that store food. These parts are then used as spices. They are known for their distinct flavors and medicinal properties.

🎯 Exam Tip: Be specific about the plant part. Spices can come from roots, stems, leaves, fruits, or bark. Here, focus on underground stems (rhizomes).

Question 3: Which is the number one country in milk production in the world?
Answer: India. India holds the top position globally in milk production. This is due to a large number of cattle and a strong dairy farming sector. The country's demand for milk is also very high.

🎯 Exam Tip: Keep up-to-date with general knowledge facts related to agricultural production at a global level.

Question 4: Which cereal is often used as poultry feed?
Answer: Maize. Maize, also known as corn, is a popular choice for feeding poultry because it is rich in energy and easy for the birds to digest. It helps in the healthy growth of chickens. Farmers often use maize to fatten up their poultry.

🎯 Exam Tip: Think about the nutritional needs of farm animals. Grains like maize provide high energy suitable for poultry.

Question 5: What is the use of aromatic oils?
Answer: Aromatic oils are used to make perfumes and cosmetics. These oils have a pleasant smell and are extracted from various plants. They add fragrance to products and are also used in aromatherapy.
In simple words: Aromatic oils, which smell good, are used to make perfumes and beauty products.

🎯 Exam Tip: Focus on the main applications of aromatic oils in industries like perfumery and cosmetics due to their fragrance.

Importance of Plants and Animals Short Answer Type Questions

Question 1: Write a short note on cereals.
Answer: Cereals are the most important type of food for people around the world. They come from plants belonging to the grass family (Graminae or Poaceae). Cereals are mainly a source of starch, which is the body's main way to get energy. Common examples of cereals include rice, wheat, and maize. They are fundamental for human nutrition.
In simple words: Cereals like rice and wheat are very important foods. They are grass plants that give us starch for energy.

🎯 Exam Tip: When writing a short note, define the term, mention its origin (plant family), main nutritional contribution, and provide common examples.

Question 3: Write a short note on beverages.
Answer: Tea and coffee are the most commonly consumed beverages globally. Tea comes from the plant Camellia sinensis, and its leaves are used to make the drink. Coffee is made from the beans of the Coffea Arabica plant, which are roasted and ground. India is the largest producer of tea in the world. Beverages provide refreshment and can also contain stimulants like caffeine.
In simple words: Beverages like tea and coffee are popular drinks made from plants. Tea leaves and coffee beans are processed to make these drinks.

🎯 Exam Tip: For beverages, name the key examples, their plant sources, and their global importance or consumption patterns.

Question 4: Write a short note on jute.
Answer: Jute is a coarse fiber obtained from jute plants. The stem of the jute plant is processed to extract this fiber. Jute fiber is used to make various products such as ropes, gunny sacks, mattresses, and carpets. It is a natural, biodegradable material. Jute is widely used in packaging and textiles.
In simple words: Jute is a rough fiber that comes from the stem of the jute plant. We use it to make ropes, bags, and carpets.

🎯 Exam Tip: Describe jute by its key characteristics (coarse fiber), its source (jute plant stem), and its common applications.

Question 5: Write a short note on timber.
Answer: Timber plays a crucial role in meeting the basic human need for shelter. The tertiary xylem, which is the wood formed in perennial plants (trees), is used to make furniture, windows, and doors. This wood is called timber. Wood that is used for these items is also known as timber. It is a strong and versatile material for construction and crafts. Timber is valued for its durability and natural beauty.
In simple words: Timber is wood from trees used to build houses and make furniture, doors, and windows. It's a strong and important material for construction.

🎯 Exam Tip: Define timber and highlight its primary uses in construction and furniture, emphasizing its structural importance.

Question 6: Comment on traditional method of lac culture.
Answer: The traditional method of lac culture is quite old and less scientific. In this method, tribal people cut down the lac-producing tree to collect lac. This practice often harms or destroys the lac insects, which then negatively affects the next lac crop. It is not a sustainable method for long-term lac production.
In simple words: The old way of getting lac involved cutting down the trees, which hurt the insects that make lac and also damaged future crops.

🎯 Exam Tip: When commenting on traditional methods, focus on their simplicity, potential drawbacks (like harm to crops/insects), and sustainability issues.

Question 7: Comment on modern method of lac culture.
Answer: The modern method of lac culture is more scientific and aims to minimize harm to the next crop. This approach ensures that lac can be harvested without destroying the lac insects or the host trees. It focuses on sustainable practices. This scientific method helps maintain the insect population and ensures continuous production.
In simple words: The modern way of growing lac is smarter because it doesn't harm the lac insects or the trees, so we can keep getting lac for a long time.

🎯 Exam Tip: Highlight the improvements of modern methods, such as sustainability, minimizing harm, and ensuring future yields, especially in comparison to traditional techniques.

Question 1. With the help of a table, show various examples of vegetables obtained from different parts of plants.
Answer:

Plants provide us with many types of vegetables, each coming from a different part of the plant, showing nature's variety.
In simple words: Vegetables come from different parts of plants like roots, stems, leaves, flowers, and fruits. The table shows examples of each.

🎯 Exam Tip: Remember common examples for each plant part. For instance, carrots are roots, potatoes are stems, spinach is leaves, cauliflower is inflorescence, and tomatoes are fruits.

Question 2. What do you understand by fibre yielding plants?
Answer: Plants that give us fibres are very important. Parts of these plants have strong, thick walls. These strong parts are called fibres. We use fibres to make things like clothes, ropes, and bags. Here is an example of a fibre-producing plant:

• Jute (Corchorus capsularis): Jute is a rough fibre from jute plants. People take the stem of the jute plant and process it to get the fibre. Jute is used to make ropes, big sacks, mattresses, and carpets. Many common household items rely on plant fibres for their strength and utility.

In simple words: Fibre yielding plants are those from which we get strong plant parts called fibres. We use these fibres to make clothes, ropes, and other useful items. Jute is one such plant.

🎯 Exam Tip: When defining fibre-yielding plants, ensure you mention what fibres are (thick-walled structures) and their practical uses, along with a specific example like jute.

Question 3. What do you understand by timber? Give some examples of timber trees and their usage.
Answer: Timber is very important because it helps us build homes, which is one of our basic needs. Timber is essentially wood that we use to make things like furniture, windows, and doors. It's strong and long-lasting. Some trees that produce timber, along with their uses, are:
1. Teak (Tectona grandis): Teak is used to make good quality furniture.
2. Shaal (Shorea robusta): Shaal wood is used for making furniture, doors, and windows.
3. Sheesham (Dalbergia sissoo): Sheesham wood is also used for making furniture, doors, and windows.
4. Rohira or Marwar Teak (Tecomella undulata): Rohira is known as the state flower of Rajasthan.
5. Khejri (Prosopsis cineraria): This tree holds the status of the State Tree of Rajasthan.
6. Deodar (Cedrus deodara): Deodar wood is used in Ayurvedic medicine.
In simple words: Timber is wood used for building and making things like furniture. Many different trees provide this wood, each with its own special uses.

🎯 Exam Tip: Define timber clearly as wood used for construction and manufacturing, and provide a diverse set of examples with their specific applications or recognized importance.

Question 4. Comment on oil yielding plants. What are the different types of oil-yielding plants?
Answer: Oil-yielding plants give us vegetable oils. These oils are complex carbon compounds, which means they are made of many different parts like hydrocarbons. There are three main kinds of oils: edible oils, inedible oils, and aromatic oils.
1. Edible Oils: These are oils we can eat, like groundnut, sesame, coconut, soybean, rapeseed, sunflower, and mustard oil. We mostly use them for cooking and frying food. They are a common part of many cuisines worldwide.
2. Inedible Oils: These oils cannot be eaten. Examples include castor oil and turpentine oil. They are used in making paints, varnishes, and sometimes in medicines.
3. Aromatic Oils: These oils have a strong, pleasant smell. Camphor, sandalwood, clove, and khus are used to get these oils. They are used to make perfumes and cosmetic products.
In simple words: Oil-yielding plants provide different kinds of oils. Some oils are for eating (edible), some are not for eating but used in industry (inedible), and some have nice smells for perfumes (aromatic).

🎯 Exam Tip: When discussing oil-yielding plants, be sure to clearly categorize the oils into edible, inedible, and aromatic types, giving specific examples and uses for each.