RBSE Solutions Class 12 Biology Chapter 17 Economic Botany and Human Welfare

RBSE Class 12 Biology Chapter 17 Multiple Choice Questions

Question 1. Basic or fundamental requirement(s) of human is
(a) Food only
(b) Cloth only
(c) Shelter and food only
(d) All of the options
Answer: (d) All of the options
In simple words: Humans need food, clothes, and a place to live to survive and be well. These three things are the most important for people.

🎯 Exam Tip: Remember that basic human needs go beyond just one item; a combination of essential resources ensures survival and quality of life.

Question 2. Spice producing plants are known as -
(a) Narcotics producing plants
Answer: (The source only provides one option for this question, so a full MCQ answer cannot be determined.)
In simple words: The question asks about plants that produce spices. Usually, spices come from various parts of special plants, like their seeds, fruits, or roots, which are used to add flavour to food.

🎯 Exam Tip: When given an incomplete MCQ, acknowledge the missing information and focus on understanding the core concept of the question.

RBSE Class 12 Biology Chapter 17 Very Short Answer Questions

Question 1. Write the name of two starch producing plants.
Answer: Two plants that provide starch are potatoes and sago, also known as Saboodana. Starch is a common carbohydrate that stores energy in many plants.
In simple words: Potato and Sago (Saboodana) are two plants that make starch.

🎯 Exam Tip: When asked for examples, choose well-known and distinct ones to clearly demonstrate your knowledge.

Question 2. What are the main, basic or fundamental requirements of human?
Answer: The most important and basic things humans need are food, clothing, and a place to live (shelter). These three are essential for human survival and well-being.
In simple words: Food, clothes, and shelter are the main basic needs for people.

🎯 Exam Tip: Always remember the three fundamental human needs: food, clothing, and shelter, as they form the basis of survival.

Question 3. How green plants are more special than other living organisms.
Answer: Green plants are unique because they can make their own food using sunlight through a process called photosynthesis. They convert light energy into organic compounds, making them the primary producers in most ecosystems.
In simple words: Green plants are special because they use sunlight to make their own food through photosynthesis.

🎯 Exam Tip: Mentioning photosynthesis and their role as "producers" are key points when explaining why green plants are special.

Question 4. Write the name of volatile oil and fatty oil-producing plants.
Answer:
Volatile oil - Chandan oil (Santalum).
Fatty oil - Mustard oil (Brassica campestris).
Volatile oils evaporate easily and often have strong fragrances, while fatty oils are thicker and do not evaporate quickly.
In simple words: Chandan oil comes from sandalwood plants as a volatile oil. Mustard oil comes from mustard plants as a fatty oil.

🎯 Exam Tip: Clearly distinguish between volatile (evaporates easily, strong scent) and fatty (thicker, doesn't evaporate easily) oils with appropriate plant examples.

RBSE Class 12 Biology Chapter 17 Short Answer Questions

Question 1. Write the definition of Economic Botany and explain its importance.
Answer: Economic Botany is the study of plants from which humans get useful substances, known as economically useful plants. This field also examines the products obtained from these plants. The main importance of economic botany is that it helps to study and manage these important plants in a systematic way, which is crucial for human needs and industries.
In simple words: Economic Botany studies plants that are useful to people. It helps us learn about these plants and their products in a proper way.

🎯 Exam Tip: A good definition includes what the subject studies and its practical significance or importance.

Question 3. Write a short note on Industrial Plants.
Answer: Industrial plants are those that provide raw materials for various industries. These plants are very important for making many products we use. Some examples include:
1. Fibre Yielding Plants: These provide material for textiles, like Cotton, Jute, Hemp, and Flax.
2. Timber Yielding Plants: These give us wood for construction and furniture, such as Teak and Sheesham (Indian Rosewood).
3. Rubber Yielding Plants: Natural Rubber comes from these plants and is used in many products.
4. Gums and Resins: Plants like Babool (Gum arabic Tree, Vachellia Analytica) and Pine (Pinus) produce gums and resins used in glues and varnishes.
5. Aromatic oils: These plants provide fragrant oils, for example, Indian Sandalwood (Santalum album) and Mogra (Arabian jasmine – Jasminum sambac).
6. Fatty Oil: These plants are sources of cooking oils and other fats, like Mustard, Groundnut, Coconut, and Castor oil.
7. Sugar and Starch: Plants like Sugarcane, Sugar beet (Beta vulgaris), Walnut, and Sago (Saboodana) provide sweeteners and energy sources.
In simple words: Industrial plants give us raw materials for factories. This includes plants for cloth fibres, wood, rubber, gums, oils, and sugar.

🎯 Exam Tip: When writing notes, always give clear examples for each category to illustrate your points effectively.

RBSE Class 12 Biology Chapter 17 Essay Type Questions

Question 1. How Economically important plants are classified? Discuss?
Answer: Scientists have classified economically important plants in different ways over time. The classification provided by A.F. Hill in 1952, detailed in his book "Economic Botany," is widely accepted. Hill divided useful plants into four main groups based on how they are used by humans:

Edible or food plants: These plants are consumed directly by humans as food.
1. Cereals and Millets: Examples include Wheat, Rice, Maize, Sorghum, and Bajra.
2. Pulses: These are legumes like Gram, Mung, Urad (Black gram), Arhar, Moth, and Chaula (Lobia).
3. Vegetables: Common examples are Potato, Brinjal, Tomato, Pumpkin, and Ladyfinger.
4. Fruits: This category includes Pomegranate, Orange, Banana, and Apple.

Food Adjuncts: These plants or their products are used to enhance food, provide medicinal benefits, or serve other supportive roles.
1. Spices and Garam Masala: These add flavour to food, such as Turmeric, Pepper, Black pepper, and Coriander seeds. Other plants like Chlorophytum Bonvillain, Neem (Azadirachta indica), Atees (Equinetum heterophile), Opium (Papaver somniferum), and Indian Snake Root (Rauvolfia serpentine) also have various uses, often medicinal.

Smoking, Chewing and Narcotic Products: These plants contain substances that affect the mind or body.
2. Examples include Tobacco, Supari (Betel nut), and "Bhaang" (Cannabis).

Industrial Plants: These plants provide raw materials for various industries.
1. Fibre Yielding Plants: These give us materials for textiles, such as Cotton, Jute, Hemp, and Flax.
2. Timber Yielding Plants: These provide wood for construction and furniture, including Teak and Sheesham (Indian Rosewood).
3. Rubber Yielding Plants: Plants that produce Natural Rubber are vital for many products.
4. Gums and Resins: These plants yield substances like Babool (Gum arabic Tree, Vachellia portfolio) and Pine (Pinus), used in various industrial applications.
5. Aromatic oils: These plants produce fragrant oils, such as Indian Sandalwood (Santalum album) and Mogra (Arabian jasmine, Jasminum sambac).
6. Fatty Oil: These are sources of oils and fats, including Mustard, Groundnut, Coconut, and Castor oil.
7. Sugar and Starch: Plants like Sugarcane, Sugar beet (Beta vulgaris), Walnut, and Sago (Saboodana) are important for food and industrial starches.
In simple words: Economically important plants are grouped based on how people use them. A.F. Hill's classification divides them into four main types: plants we eat, plants used with food (like spices or medicines), plants used for smoking or narcotics, and plants that provide materials for industries like fibres, wood, rubber, oils, and sugar.

🎯 Exam Tip: For essay questions on classification, clearly state the basis of classification and provide specific examples for each category to demonstrate a thorough understanding.