Maharashtra Board Class 6 Science Chapter 2 The Living World Solutions

ℹ️ चित्र व्याख्या (Diagram Explanation): एक बच्ची एक छड़ी पकड़े हुए है और उसके आस-पास गणित और विज्ञान से संबंधित चित्र बने हुए हैं, जिसमें 'CLASS 6 SCIENCE CHAPTER 2 THE LIVING WORLD' लिखा है।

The Living World Class 6 Science Chapter 2 Questions And Answers Maharashtra Board

Std 6 Science Chapter 2 The Living World Question Answer Maharashtra Board

Class 6 Science Chapter 2 The Living World Question Answer Maharashtra Board

1. Write the answers to the following questions in your words.

Question a. What are the differences between plants and animals?
Answer:

Plants	Animals
1. Plants cannot move from one place to another. They are anchored to the soil.	1. Animals can move from one place to another.
2. Plants prepare their own food with the help of chlorophyll and sunlight.	2. Animals cannot prepare their own food. They move in search of food from one place to another.
3. Plants grow throughout their life.	3. Animals grow only up to a certain period of their life.
4. Plants respire with the help of microscopic pores present on their leaves and stems.	4. Animals respire with the help of special organs like lungs, gills, trachea, etc.
5. Plants excrete their waste by storing them in the leaves and bark of plants and then shedding them seasonally.	5. Animals excrete their waste with the help of special organs regularly.
6. Plants are only living things which take in carbon dioxide and give out oxygen during photosynthesis.	6. Animals take in oxygen and give out carbon dioxide throughout their life.
7. Plants reproduce with the help of seeds, stems, spores, bulbs etc.	7. Animals reproduce by laying eggs or giving birth to young ones.

In simple words: Plants are usually fixed, make their own food, and grow continuously, while animals move, seek food, and have limited growth periods. Their methods of respiration, waste excretion, and reproduction also differ.

🎯 Exam Tip: Focus on clear, concise points for comparison, highlighting key biological processes like nutrition, movement, growth, and reproduction. A tabular format is excellent for scoring.

 

Question b. What are the similarities between plants and animals?
Answer:
1. Both plants and animals increase in height, size and weight as they grow into an adult.
2. They require food to supply energy to carry out the various life processes.
3. They have a fixed life span after which they die.
4. All plants and animals respire and they take in oxygen and give out carbon dioxide while breathing.
5. All the plants and animals excrete their wastes produced in their body.
6. All plants and animals have ability to reproduce.
7. All plants and animals show responsiveness to their external stimuli.
In simple words: Both plants and animals share fundamental life processes such as growth, need for energy from food, a defined lifespan, respiration, waste excretion, reproduction, and the ability to respond to their environment.

🎯 Exam Tip: When listing similarities, ensure each point reflects a common biological characteristic or process shared by both kingdoms.

 

Question c. How is the plant kingdom useful to us?
Answer:
1. Plants are used for household as well as industrial purposes.
2. They provide us with food in the form of fruits, vegetables etc., e.g. Potato, methi, bhendi, apple, mango, etc.
3. Some plants are also used as medicines e.g. Adulsa, Hirada, Tulsi etc.
4. They also support birds which build their nests.
5. Wood of tress like oak, fir, birch, etc. are used to make furniture, in building homes, etc. Wood pulp is used to make paper.
In simple words: Plants are crucial for human survival and industry, providing food, medicine, shelter (wood), raw materials for paper, and supporting wildlife habitats.

🎯 Exam Tip: Provide diverse examples for each category of plant use (food, medicine, industrial) to demonstrate comprehensive understanding.

 

Question d. How is the animal kingdom useful to us?
Answer:
1. Dogs, cats, cows, etc. are domesticated. Dogs and cats are used as pets.
2. Cows, buffaloes, goats, etc. are used for getting their milk.
3. Sheep is used for obtaining wool.
4. Horses, oxen, camels and donkeys are used to carry burden and for various other occupations.
5. Earthworm is useful in agriculture.
6. Birds like hens, turkeys, and ducks provide their eggs to us for food.
7. Insects like bees provide us with honey, silkworm provides us with silk.
In simple words: Animals serve various purposes for humans, including companionship, providing food products like milk, eggs, meat, and wool, assisting in labor, and aiding agriculture.

🎯 Exam Tip: When explaining animal utility, categorize uses like companionship, food, labor, and specific products for better clarity.

 

Question e. What makes living things different from non-living things?
Answer:

Living Things	Non-Living Things
1. Living things can grow on their own in size, height and weight.	1. Non-living things do not grow on their own in size, height and weight.
2. Living things can move from one place to another on their own.	2. Non-living things can move only if someone moves them.
3. Living things can reproduce.	3. Non-living things cannot reproduce.
4. Living things exhibit responses to various stimuli.	4. Non-living things do not exhibit responses to various stimuli.
5. They require food for their growth.	5. They do not require any food.

In simple words: Living things are characterized by growth, self-movement, reproduction, responsiveness to stimuli, and a need for food, unlike non-living things which lack these fundamental life processes.

🎯 Exam Tip: Use a comparative table to clearly distinguish between living and non-living things based on key characteristics such as growth, movement, reproduction, and responsiveness.

 

2. What helps them to breathe?

Question a. (a) A fish (b) A snake (c) A crane (d) An earthworm (e) Man (f) A banyantree (g) A caterpillar.
Answer:

Plant/Animal	Breathing Organ
A fish	gills
A snake	external nostrils and lungs.
A crane	external nose and air sacs in lungs.
An earthworm	moist skin.
Man	nose and lungs.
A banyan tree	microscopic pores (called stomata) present on leaves.
A caterpillar	trachea which opens at the side in their skin.

In simple words: Different living organisms have specialized organs or structures for respiration, such as gills for fish, lungs for mammals and reptiles, and stomata for plants, allowing them to exchange gases with their environment.

🎯 Exam Tip: Memorize the specific breathing organs for a variety of common animals and plants as this is a frequent knowledge-based question.

 

3. Fill in the blanks with the proper words from the brackets.

(plants, oxygen, dies, excretion, carbon- dioxide, photosynthesis, stimuli, cells, sunlight, chlorophyll, microscopic pores, responsiveness.)

Question a. The process by which plants make their own food is called .......................... .
Answer: photosynthesis
In simple words: Photosynthesis is the process plants use to create their own food using sunlight.

🎯 Exam Tip: Understand the definition of photosynthesis and its key components (sunlight, chlorophyll) for accurate answers.

 

Question b. To inhale .................... and to exhale .................... is called respiration.
Answer: oxygen, carbon-dioxide
In simple words: Respiration is the process of inhaling oxygen and exhaling carbon-dioxide to sustain life.

🎯 Exam Tip: Clearly remember the gases involved in the inhalation and exhalation process during respiration.

 

Question c. The elimination of waste substances fr6m the body is called .......................... .
Answer: excretion
In simple words: Excretion is the biological process of removing waste products from the body.

🎯 Exam Tip: Define excretion simply as the removal of bodily waste, distinguishing it from other bodily functions.

 

Question d. The ability to respond to an event is called .................... to .......................... .
Answer: responsiveness, stimuli
In simple words: Responsiveness is the capacity of living organisms to react to changes or events in their environment, known as stimuli.

🎯 Exam Tip: Distinguish between 'responsiveness' (the ability) and 'stimuli' (the event causing the response).

 

Question e. On completing their lifespan, every living thing .......................... .
Answer: dies
In simple words: All living organisms have a finite lifespan, and upon its completion, they die.

🎯 Exam Tip: Understand the concept of lifespan as the natural duration of existence for an organism, ending in death.

 

4. Write the uses of these animals and plants.

Animals: Honeybees, sharks, yaks, sheep, earthworms, dogs, bivalves, horses, mice.
Plants: Ginger, mango, eucalyptus, babul (acacia), teak, spinach, aloevera, turmeric, holy basil, karanja, moh, mulberry, grapevine.

Question a. Write the uses of these animals and plants.
Answer:
Animals Uses:

Animals	Uses
1. Honeybees	Honey and wax prepared by them is used by us. Beeswax is used in cosmetics like lip - balm, lipgloss, etc.
2. Sharks	The 'shark liver oil' obtained from them is a rich source of vitamins.
3. Yaks	Milk and meat obtained is used as food. Yaks are also used for carrying loads in mountainous regions.
4. Sheep	Their fleece is used as a good source of wool. Their meat is used as food.
5. Earthworms	They convert biodegradable waste to good manure (vermicompost)which can be used in fields and gardens. They are called "friends of farmers” as they make the soil fertile.
6. Dogs	They are used as pets to guard houses and farms.
7. Bivalves	Bivalves like oysters are used to obtain pearls used in jewellery making. They are also used as food.
8. Horses	They are used for pulling carriages, heavy loads and also as means of transport in mountainous regions.
9. Mice	They are used in research to test medicines, vaccines etc.
10. Rabbits	They are used as pets and also in research. Their meat is used as food.

Plants Uses:

Plants	Uses
1. Ginger	Used as medicine to cure digestive problems of stomach. It is also used as a spice in food.
2. Mango	It is used to prepare pickles when raw and as a fruit when ripe. It is also used to prepare jam, jelly and in ice-creams.
3. Eucalyptus	Leaves and oil extracted from it is used as medicine to cure fever, cold and cough.
4. Babul (Acacia)	It is used as a medicine. Also used as cattle feed. It is used to clean teeth. It was also used to cure leprosy and heal wounds.
5. Teak (Sag)	Its wood is used to make furniture.
6. Spinach (Palak)	It is used as a vegetable.
7. Aloe vera (Korphad)	It is used to treat various skin diseases. Its gel is used as a moisturizer for skin and for treating hair fall.
8. Turmeric	It is used as a spice and has medicinal properties. It is used for healing wounds and cuts due to its antiseptic properties (i.e. helps to prevent growth of bacteria).
9. Holy basil (Tulsi)	It is used as medicine to cure cough and cold. It also reduces air pollution and drives away mosquitoes.
10. Karanja (Jatropha)	It is used as a medicine and its seeds are used to prepare biodiesel.
11. Moh (Mahwa) [Scientific name: Madhuca longifolia]	The fat extracted from its seeds is used in the manufacture of soaps and detergents. Its bark and flowers are used as medicine. Its leaves are used to feed silkworms which produce Tussar silk. Seeds and flowers are also used to make wine.
12. Mulberry	The leaves of these trees are used for feeding silkworms which produce silk. The fruits are rich in vitamins. Jam and jelly are also made from these fruits.
13. Grapevine	Grapes are fruits of a grapevine. They are used for making jam, jelly, juice, wine and are also eaten as fruits. Raisins are prepared from these grapes.

In simple words: Animals provide products like honey, wool, and milk, assist in labor, and are used in research. Plants offer food, medicines, timber, and raw materials for various industries.

🎯 Exam Tip: For questions on uses of animals and plants, aim to provide a diverse set of examples covering food, economic, medicinal, and ecological benefits.

 

5. What are the peculiarities of the movements of these living things?

Living things: Snakes, tortoises, kangaroos, eagles, chameleons, frogs, gulmohur, sweet potato creeper, dolphins, ants, rattlesnakes, grasshoppers, earthworms.

Question a. What are the peculiarities of the movements of these living things?
Answer:

1. Snakes	They don't have legs. They move in a S-shaped wavy motion. They cannot move over smooth surface. They move by contraction and relaxation of their body muscles.
2. Tortoises	They are very slow and they walk on their four legs by raising their body off the ground. They are the slowest animals.
3. Kangaroos	The hind legs of kangaroos are long and front legs are short. A kangaroo moves by hopping (jumping) on its muscular hind legs with the support of long tail outstretched behind. This movement is called penta pedal movement [Penta = 5, pedal = legs].
4. Eagles	Eagles fly at great heights and they can lift and fly away with prey which are heavier than them. Wings of eagles are strong and powerful.
5. Chameleons	Chameleons can change the colour of their skin and camouflage (hide) in their surroundings. They move slowly with their four legs. They also use their tail and claws to grab a branch and balance themselves.
6. Frogs	Their hind legs are long and front legs are short. Hence, they hop on their hind legs, when on land, and swim with the help of hind limbs when in water.
7. Gulmohar	Gulmohar blooms in summer and the flowers which are red in colour reveal very few leaves. Their leaves fold up during evening. It grows to a height of 5 m to 12 m and it shed all its leaves in dry season.
8. Sweet potato creeper	Sweet potato creepers are fastest growing creepers that cover the whole ground. If they find some support, they try to bend towards it.
9. Dolphins	They move on surface of water by slapping their tail, exposing their head, leaping out of water, diving in the water and doing a side flop. 30 patterns are seen in their behaviour while moving on water.
10. Ants	The ants move in a line and as they move, they leave a chemical called pheromone behind as a trail which attracts other ants. They have six legs and they can walk very fast.
11. Rattle snakes	Rattle snake is a highly poisonous snake. The rattling sound is made by the shaking of the rattle located on its tail when it moves.
12. Grasshoppers	They are insects with three pairs of walking legs and two pairs of wings which helps them to walk, fly and jump. They can leap vigorously due to powerful hind legs.
13. Earthworms	Each segment on the body of earthworm contain group of bristles (called setae) which are used for movement. They move forward by repeated contractions and relaxations of their muscles. A slimy substances secreted by the earthworm helps in its movement.

In simple words: Living things exhibit diverse and specialized modes of movement, from the S-shaped motion of snakes to the hopping of kangaroos and the growth patterns of plants like Gulmohar, all adapted to their environment.

🎯 Exam Tip: When describing movements, highlight specific anatomical features or biological processes that enable that particular type of locomotion.

 

6. Write in detail about how the plants and animals found in your surroundings prove useful or harmful.

Question a. Write in detail about how the plants and animals found in your surroundings prove useful or harmful.
Answer: Some animals and plants around us are harmful to man.
1. Mosquitoes and flies spread diseases.
2. Cockroaches, mice, rats destroy our food. Lice, ticks also spread diseases.
3. The bites of some poisonous lizards, spiders, snakes and scorpions can even cause death.
4. If wild elephants enter human settlements, they cause a lot of destruction.
5. Dog bite from a rabid dog can cause rabies.
6. Plants like datura are poisonous. Consumption of its seed can cause death.
7. Uncontrolled growth of algae and fungi pollutes water and may cause disease. Fungi cause rotting of food.
8. Pods of nettle and colocasia leaves can cause itching.
9. Weeds like parthemum, dodder affect crop growth.
In simple words: While many plants and animals are beneficial, some pose harm by spreading diseases, destroying resources, causing poisoning, or damaging property and crops.

🎯 Exam Tip: For this question, provide clear examples of both beneficial and harmful aspects, focusing on their direct impact on humans and the environment.

 

Activity:

Class 6 Science Chapter 2 The Living World Question Answer Question 1. Obtain information about the work of the Botanical Survey of India and the Zoological Survey of India by visiting the websites :
www.bsi.gov.in, W.zsi.gov.in
In simple words: To learn about the roles of the Botanical Survey of India and the Zoological Survey of India, students should visit their respective official websites.

🎯 Exam Tip: For activity-based questions, emphasize the learning outcome and the method of obtaining information.

 

Class 6 Science Chapter 2 The Living World Question 2. Collect information about the lifespan of various animals, make a chart and display it in your class.
In simple words: This activity involves researching the lifespans of different animals and presenting the findings in a classroom chart.

🎯 Exam Tip: When preparing a chart, ensure it is visually appealing, well-organized, and contains accurate information from credible sources.

 

The Living World Class 6 Questions And Answers Question 3. Gather information about the poisonous snakes found in India and present it in a Science Exhibition.
In simple words: Research India's poisonous snakes and create an informative exhibit for a science fair.

🎯 Exam Tip: For an exhibition, focus on clear visuals, concise text, and safety information regarding poisonous snakes.

 

Class 6 Science Chapter 2 The Living World Important Questions and Answers

Fill in the blanks with the proper words from the brackets.
(plants, oxygen, dies, excretion, carbon- dioxide, photosynthesis, stimuli, cells, sunlight, chlorophyll, microscopic pores, responsiveness.)

The Living World Class 6 Question Answers Question 1. Living things are made up of small units called .......................... .
Answer: cells
In simple words: All living organisms are fundamentally composed of tiny structural and functional units called cells.

🎯 Exam Tip: Remember that the cell is the basic unit of life, a core concept in biology.

 

The Living World Class 6 Question 2. A potted plant placed in a window grows towards .......................... .
Answer: sunlight
In simple words: Plants exhibit phototropism, meaning they grow towards a light source like sunlight.

🎯 Exam Tip: Recognize 'sunlight' as the primary stimulus for plant growth direction, especially in photosynthesis.

 

The Living World Class 6 Solutions Question 3. Plants appear green in colour due to the presence of .......................... .
Answer: chlorophyll
In simple words: The green pigment called chlorophyll in plant cells is responsible for their characteristic green color.

🎯 Exam Tip: Understand chlorophyll's dual role: responsible for green color and essential for photosynthesis.

 

The Living World Class 6 Exercise Answers Question 4. Plants respire by means of .................... on their stems and leaves.
Answer: microscopic pores
In simple words: Plants respire through tiny openings called microscopic pores, found on their stems and leaves.

🎯 Exam Tip: Identify microscopic pores (stomata) as the key structures for gas exchange and respiration in plants.

 

My Living World Book Class 6 Answers Question 5. .................... grow throughout their lifespan.
Answer: Plants
In simple words: Unlike animals, plants exhibit continuous growth throughout their entire lifespan.

🎯 Exam Tip: Recall that continuous growth is a distinguishing feature of plants compared to animals' limited growth periods.

 

Match the columns:

Question 1.

Column 'A'	Column 'B'
1. Responsiveness to stimuli	a. plants shed leaves in Autumn
2. Respiration	b. seeds sprout when sowed in soil
3. Excretion	c. petals of lotus close when sun sets
4. Reproduction	d. oxygen is taken in through moist skin in earthworms.

Answer:

Column 'A'	Column 'B'
1. Responsiveness to stimuli	c. petals of lotus close when sunsets
2. Respiration	d. oxygen is taken in through moist skin in earthworms.
3. Excretion	a. plants shed leaves in Autumn
4. Reproduction	b. seeds sprout when sowed in soil

In simple words: This matching exercise connects core life processes like responsiveness, respiration, excretion, and reproduction with their appropriate examples in nature.

🎯 Exam Tip: For match the column questions, first identify the definition or characteristic in one column and then find its best example or related concept in the other.

 

Plants carry out photosynthesis to prepare their food. With reference to this process of photosynthesis, match the columns given below.

Question 1.

Column 'A'	Column 'B'
1. Minerals	a. given out into the air
2. Carbon dioxide	b. absorbed from the soil
3. Heat from sunlight	c. absorbed from the air
4. Oxygen	d. absorbed by chlorophyll.

Answer:

Column 'A'	Column 'B'
1. Minerals	b. absorbed from the soil
2. Carbon dioxide	c. absorbed from the air
3. Heat from sunlight	d. absorbed by chlorophyll.
4. Oxygen	a. given out into the air

In simple words: This exercise clarifies the roles of various components like minerals, carbon dioxide, sunlight, and oxygen in the process of photosynthesis by matching them with their respective actions.

🎯 Exam Tip: Understand each input and output of photosynthesis and their source or destination to correctly match them.

 

Can you tell?

Question 1. What differences do you see between the young ones and the adults in the picture?
Answer:
ℹ️ चित्र व्याख्या (Diagram Explanation): यह चित्र एक परिवार की वृद्धि को दर्शाता है, जहाँ बच्चे से लेकर वयस्क और वृद्ध तक की अवस्थाएँ दिखाई गई हैं। एक पेड़ के विकास को भी साथ में दर्शाया गया है।
The young ones are smaller in size, height and shape.
In simple words: Young ones are generally smaller in size, height, and have different physical characteristics compared to adults, reflecting growth and development.

🎯 Exam Tip: Focus on observable physical changes such as size, height, and overall form when comparing young ones to adults in developmental stages.

 

 

ℹ️ चित्र व्याख्या (Diagram Explanation): यह चित्र जीवित वस्तुओं में वृद्धि को दर्शाता है। इसमें एक ही परिवार के सदस्यों को अलग-अलग उम्र में दिखाया गया है – एक बच्चा, एक युवा व्यक्ति और एक बुजुर्ग, जो सभी अलग-अलग आकार, ऊंचाई और रूप में हैं, साथ ही पेड़ भी बढ़ते हुए दिखाई दे रहे हैं। यह बताता है कि समय के साथ जीवित वस्तुएं कैसे बदलती हैं और बढ़ती हैं।

Question 1. What differences do you see between the young ones and the adults in the picture?

Answer: The young ones are smaller in size, height and shape.
In simple words: Young living things are smaller and less developed than adults, showing a clear difference in their size, height, and overall form.

🎯 Exam Tip: Focus on observable physical changes like size and height when describing growth differences between young and adults.

 

ℹ️ चित्र व्याख्या (Diagram Explanation): यह चित्र जीवित वस्तुओं में प्रजनन की विभिन्न विधियों को दर्शाता है। इसमें एक पक्षी और उसके अंडे दिखाए गए हैं, जो अंडे देकर प्रजनन को दर्शाते हैं; ब्रायोफिलम का पौधा, जो पत्तियों से नए पौधे उगाता है; एक घोड़ी और उसका बछड़ा, जो जन्म देकर प्रजनन को दर्शाते हैं; और गुलाब की कलम, जो तने से नए पौधे उगाती है। यह सभी चित्र यह समझाते हैं कि पौधे और जानवर अलग-अलग तरीकों से संतान उत्पन्न करते हैं।

Question 2. What do we learn from these pictures?

Answer: We learn that all living beings whether plants or animals reproduce in different ways.
In simple words: These pictures teach us that all living things, whether plants or animals, have various methods of reproduction to create new life.

🎯 Exam Tip: Recognize and categorize different reproductive strategies (e.g., egg-laying, vegetative propagation, live birth) for diverse organisms.

 

Question 3. Observe a honeycomb and a wall. What are they made up of?

Answer: Bricks are laid one over the other to form a wall. In a honeycomb, the beeswax is joined to form small compartments to form a honeycomb.
In simple words: A wall is built from bricks stacked together, while a honeycomb is made from beeswax forming many small, connected compartments.

🎯 Exam Tip: Note the difference in the fundamental units (bricks vs. beeswax) and the purpose of their arrangement (structure vs. storage).

 

Question 4. In what ways are the plants and animals useful to us?

Answer:

Plants	Animals
1. Plants cannot move from one place to another. They are anchored to the soil.	1. Animals can move from one place to another.
2. Plants prepare their own food with the help of chlorophyll and sunlight.	2. Animals cannot prepare their own food. They move in search of food from one place to another.
3. Plants grow throughout their life.	3. Animals grow only up to a certain period of their life.
4. Plants respire with the help of microscopic pores present on their leaves and stems.	4. Animals respire with the help of special organs like lungs, gills, trachea, etc.
5. Plants excrete their waste by storing them in the leaves and bark of plants and then shedding them seasonally.	5. Animals excrete their waste with the help of special organs regularly.
6. Plants are only living things which take in carbon dioxide and give out oxygen during photosynthesis.	6. Animals take in oxygen and give out carbon dioxide throughout their life.
7. Plants reproduce with the help of seeds, stems, spores, bulbs etc.	7. Animals reproduce by laying eggs or giving birth to young ones.

In simple words: Plants provide us with food, oxygen, and various resources, while animals offer companionship, food, labor, and other essential products, fulfilling different needs in our lives.

🎯 Exam Tip: When discussing usefulness, consider both direct benefits (food, materials) and indirect benefits (ecological roles, services).

 

Use Your Brainpower!

 

Question 1. What differences do you see in the growth of trees like mango, banyan and peepal and that of bamboo, coconut and toddy palms?

Answer:1. Trees like mango, banyan and peepal have lot of branches and leaves. 2. They have a thick and wide trunk which is short. 3. Trees like bamboo, coconut and toddy palm have few leaves and they are found only at the top of the trunk. 4. The trunk of the tree is tall and comparatively thin.
In simple words: Mango, banyan, and peepal trees have many branches and a thick, short trunk, while bamboo, coconut, and toddy palms are tall and thin with leaves mostly at the top.

🎯 Exam Tip: Differentiate tree growth patterns based on branching, trunk thickness, and height distribution of leaves.

 

Question 2. In each of the examples given below, what is the stimulus? What is the response?

ℹ️ चित्र व्याख्या (Diagram Explanation): पहले चित्र में एक मिमोसा (छुई-मुई) का पौधा दिखाया गया है, जिसकी पत्तियां छूने पर बंद हो जाती हैं। दूसरे चित्र में एक गमले में लगा पौधा दिखाया गया है जो खिड़की के पास रखा है और सूर्य के प्रकाश की ओर झुककर बढ़ रहा है। ये चित्र पौधों की बाहरी उद्दीपकों के प्रति प्रतिक्रिया दर्शाते हैं।
Answer:1. In mimosa plant, touching the leaf is the stimulus and closing of mimosa leaves is the response. 2. Keeping the potted plant near the window is the stimulus and growing the stem in the direction of sunlight is the response.
In simple words: For a mimosa plant, touch is the stimulus causing its leaves to close as a response; for a potted plant, sunlight from the window is the stimulus, making its stem grow towards the light.

🎯 Exam Tip: Identify the specific external factor (stimulus) and the resulting action or change (response) in living organisms.

 

Question 3. What is the main difference between movements of plants and animals?

Answer:1. Movement in plants is restricted i.e branches can bend towards light. 2. They swing to and fro when the wind blows. 3. The leaves open or close during the day and night, petals of flowers close or open during night and day. 4. Roots grow in the direction of water under the ground. 5. Animals can freely move from one place to another in search of food, habitat and shelter.
In simple words: Plants exhibit limited movement, often in response to stimuli like light or water, while animals possess the ability to move freely from one place to another for needs like food and shelter.

🎯 Exam Tip: Contrast the type and purpose of movement: plants show growth-related and environmental response movements, whereas animals show locomotion for survival needs.

 

Question 4. Why have so many plants and animals been able to survive on the earth even today?

Answer:1. All the animals and plants have ability to reproduce young ones similar to themselves. 2. Also they have ability to adjust themselves to the conditions in their surroundings. 3. Due to this ability we have so many types of plants and animals and they have been able to survive on the earth even today.
In simple words: Plants and animals have survived because they can reproduce to create new generations and adapt to changes in their environment.

🎯 Exam Tip: Key factors for species survival are reproduction (ensuring continuity) and adaptation (responding to environmental changes).

 

Question 5. What is the sticky substance seen on the stems of the babul (acacia) or drumstick trees?

Answer:1. It is the gum which oozes out when we prick it or cut it. 2. It is the waste product that is stored in the bark. 3. This gum has a lot of medicinal value.
In simple words: The sticky substance on babul or drumstick trees is gum, which is a waste product exuded from the bark and has medicinal properties.

🎯 Exam Tip: Remember that gum serves both as an excretory product for the plant and has practical applications for humans.

 

Observe And Discuss

 

Question 1. Hold your hand in front of your nose or keep your hand on your chest. What do you feel?

Answer:

Living Things	Non-Living Things
1. boy, girl, hen, dog, tree.	1. ball, book, fan, house, bucket, kite.

In simple words: Holding your hand in front of your nose, you feel warm air exhaled from breathing, and placing it on your chest, you feel your heartbeat, both indicating signs of life.

🎯 Exam Tip: Relate the sensations (warm air, heartbeat) to the biological processes of respiration and circulation, which are characteristics of living things.

 

Find The Life Span And Age Of Maturity Of The Given Living Beings

 

Question 1. Find the life span and age of maturity of the given living beings.

Answer:

Plants/Animals	Life span	Maturity age (Time period required to grow into adults and reproduce)
Dog	10 -15 years	2-3 years
Cow	15 years	2 years
Hen/Chicken	6-8 years	6 months
Elephants	40-60 years	10-15 years
Tortoise	More than 100 years	10-13 years
Butterfly	2-6 weeks	1 week
Mango tree	25 years	3-4 years
Peepal tree	150 years	3-4 years
Banyan tree	200-1000 years	5-6 years
Banana	25 years	3-4 years
Rice	3-4 months	1-2 months
Rose	5-7 years	1 year

In simple words: The life span is how long an organism lives, while the maturity age is the point when it can reproduce, and these vary greatly among different plants and animals.

🎯 Exam Tip: Pay attention to the typical ranges for both life span and maturity age, as they are distinct biological milestones.

 

Answer The Following:

 

Question 1. Is all the food we eat used by the body?

Answer: No, non-essential and undigested food is thrown out of the body in the form of waste.
In simple words: No, not all food is used; the body only absorbs essential nutrients, and the rest is eliminated as waste.

🎯 Exam Tip: Understand that digestion is a process of breaking down food and absorbing usable nutrients, with indigestible parts forming waste.

 

Question 2. What is the unused part of food converted into?

Answer: The unused part of food is converted into excreta.
In simple words: The body converts any food it cannot digest or use into waste material called excreta.

🎯 Exam Tip: Link the term 'excreta' directly to the unused or waste products of food digestion.

 

6th Std Science Questions And Answers: