Class 6 Science Chapter 2 Extra Questions and Answers – Diversity in the Living World
Class 6 Science Chapter 2 Extra Questions and Answers for “Diversity in the Living World” (based on NCERT textbook Curiosity ).
EXTRA IMPORTANT QUESTIONS WITH ANSWERS – Chapter 2 – Diversity in the Living World
This includes All types of Questions normally asked in school exams, tests, and NCERT exercises.
Very Short Answer Questions (Chapter 2 – Diversity in the Living World)
Q1. What is biodiversity?
Answer: The variety of plants, animals, and other living organisms found in a particular region is called biodiversity.
Q2. Name any two examples of plants you observed during a nature walk.
Answer: Example: Grass, hibiscus. (Any two are correct.)
Q3. What type of stem does grass have?
Answer: Grass has a soft and thin stem.
Q4. What type of roots does the mustard plant have?
Answer: Mustard has a taproot system.
Q5. What is parallel venation?
Answer: When the veins of a leaf run parallel to each other, it is called parallel venation.
Q6. Give one example of a monocot seed.
Answer: Maize seed.
Q7. Name the place where fish live.
Answer: Fish live in water (aquatic habitat).
Q8. Which feature helps a fish move in water?
Answer: Fins help a fish move in water.
Q9. What are shrubs?
Answer: Shrubs are medium-sized plants with hard stems that branch close to the ground.
Q10. What is the habitat of a camel?
Answer: The desert (hot or cold desert).
Q11. Name any one animal that can live both on land and in water.
Answer: Frog.
Q12. What does reticulate venation look like?
Answer: A net-like pattern of veins on the leaf.
Q13. What do camels store in their humps?
Answer: Fat (used as food reserve).
Q14. Name the body part used by a goat for movement.
Answer: Legs.
Q15. What is adaptation?
Answer: Special features that help living organisms survive in their habitat.
Q16. What type of stems do herbs have?
Answer: Soft, green, and tender stems.
Q17. Name one example of an amphibian.
Answer: Frog.
Q18. What are sacred groves?
Answer: Protected forest patches preserved by local communities where plants and animals are not harmed.
Q19. How many cotyledons do dicot seeds have?
Answer: Two cotyledons.
Q20. Which type of root is seen in grasses?
Answer: Fibrous root system.
Short Answer Questions (Chapter 2 – Diversity in the Living World)
Q21. List any three features based on which plants can be grouped.
Answer: Plants can be grouped on the basis of:
- Type of stem
- Type of roots
- Leaf venation
- Height
- Number of cotyledons (Any three)
Q22. What similarities did you observe among plants during your nature walk?
Answer:
- All plants have stems, roots, and leaves.
- Most plants have green leaves.
- Many plants bear flowers.
Q23. Write differences between taproot and fibrous root.
Answer:
- Taproot: One main root with smaller side roots.
- Fibrous root: Many thin roots of similar size arising from stem base.
Q24. State two features of herbs.
Answer:
- They are small plants.
- They have soft, green, tender stems.
Q25. How do shrubs differ from trees?
Answer:
- Shrubs have many thin woody stems and medium height.
- Trees have a single thick woody stem (trunk) and are tall.
Q26. Why do banana leaves have parallel venation?
Answer:
Because banana is a monocot plant, and monocots usually have parallel venation.
Q27. Why is grass classified as a monocot plant?
Answer:
Grass has parallel venation and fibrous roots, both features of monocots.
Q28. How can students show respect for living organisms during a nature walk?
Answer:
- Not plucking leaves or flowers.
- Not disturbing birds, insects, or animals.
- Observing silently without harming nature.
Q29. Why are birds able to fly while goats cannot?
Answer:
Birds have wings, lightweight bodies, and hollow bones, which help in flying; goats do not have these features.
Q30. What are the roles of plants in biodiversity?
Answer:
- Provide food and oxygen.
- Provide shelter to animals.
- Maintain balance in ecosystems.
Q31. Why is grouping helpful in studying plants and animals?
Answer:
Because grouping helps us understand similarities, differences, and characteristics easily.
Q32. How does the venation of a leaf help in grouping plants?
Answer:
Leaf venation indicates whether the plant is monocot (parallel venation) or dicot (reticulate venation).
Q33. Explain the movement of pigeon and housefly.
Answer:
- Pigeon: Walks and flies using legs and wings.
- Housefly: Walks and flies using legs and wings.
Q34. Why do mountain plants like deodar have sloping branches?
Answer:
Sloping branches allow snow to slide off easily, preventing damage.
Q35. What type of adaptations help animals survive in cold regions?
Answer:
- Thick fur
- Layer of fat
- Short ears/legs
- Camouflage body colour
Q36. What differences do you observe in desert plants?
Answer:
- Thick fleshy stems
- Spines instead of leaves
- Ability to store water
Q37. Why is a cactus able to survive in hot desert conditions?
Answer:
Because it has:
- Thick stems to store water
- Spines to reduce water loss
- Deep roots
Q38. Why does biodiversity vary from one region to another?
Answer:
Because temperature, rainfall, soil, and climate differ from region to region.
Q39. What is meant by terrestrial habitat? Give examples.
Answer:
Land-based habitats like forests, deserts, mountains, and grasslands.
Q40. What is aquatic habitat? Give two examples.
Answer:
Water-based habitats.
Examples: Pond, river, lake, ocean.
Long Answer Questions (Chapter 2 – Diversity in the Living World)
Q41. Explain the relationship between leaf venation, root type, and seed type with examples.
Answer:
Leaf venation, root type, and seed type are related in the following way:
- Plants with reticulate venation usually have taproot and dicot seeds.
Example: Hibiscus, chickpea. - Plants with parallel venation usually have fibrous roots and monocot seeds.
Example: Grass, wheat, banana.
Thus, observing any one feature helps predict the others.
Q42. Describe the important features of monocot and dicot plants.
Answer:
Monocot plants:
- One cotyledon in the seed
- Parallel venation
- Fibrous roots
- Examples: Wheat, maize, grass
Dicot plants:
- Two cotyledons in the seed
- Reticulate venation
- Taproot system
- Examples: Mango, hibiscus, chickpea
Q43. What adaptations help camels survive in the desert? Explain any four.
Answer:
- Thick lips: Help eat thorny plants.
- Long legs and broad hooves: Prevent sinking into sand.
- Humps store fat: Used as food during scarcity.
- Minimal water loss: They do not sweat and produce dry dung.
Q44. Describe how plants and animals depend on each other in an ecosystem.
Answer:
- Plants provide food for animals.
- Trees provide shelter and nesting places for birds and animals.
- Animals such as bees and butterflies help in pollination.
- Animals eat fruits and help disperse seeds.
Thus, both are interdependent for food, shelter, reproduction, and survival.
Q45. Explain with examples how climate influences biodiversity in a region.
Answer:
- Hot deserts: Cactus with thick stem; camel with long legs.
- Cold mountains: Deodar with sloping branches; yaks with thick fur.
- Oceans: Fish have streamlined bodies; whales have fins.
Climate decides the adaptations organisms must have, forming unique biodiversity.
Q46. Compare desert, mountain, ocean, and forest habitats in terms of plants and animals.
Answer:
- Desert: Cactus, camel
- Mountain: Deodar, rhododendron, snow leopard
- Ocean: Fish, whale, sea turtles
- Forest: Lions, tigers, monkeys, tall trees
Different conditions create different plants and animals.
Q47. Describe five key observations students can make during a nature walk.
Answer:
- Types of stems
- Shape and venation of leaves
- Types of flowers and colours
- Movement of animals
- Types of sounds (bird calls, insects)
Q48. How does habitat destruction lead to loss of biodiversity?
Answer:
- Animals lose homes and food sources.
- Plants cannot grow without proper conditions.
- Species decline due to scarcity of resources.
- Some organisms may become endangered or extinct.
Q49. Explain the importance of sacred groves in protecting biodiversity.
Answer:
- No trees are cut in sacred groves.
- Hunting is strictly prohibited.
- Many rare plants and animals survive there.
- They act as natural biodiversity reserves.
Q50. Describe the features and movements of any three animals observed by you.
Answer:
Example:
- Goat: Walks and jumps using legs.
- Pigeon: Walks and flies using legs and wings.
- Fish: Swims using fins and tail.
Higher Order Thinking Questions (HOTS) Chapter 2 – Diversity in the Living World
Q51. Why do goats have strong legs while fish do not?
Answer:
Goats live on land and need strong legs to walk and climb.
Fish live in water and need fins—not legs—for movement.
Q52. A student found a plant with fibrous roots. Predict its venation and seed type.
Answer:
It will mostly have parallel venation and be a monocot plant.
Q53. Why do rhododendrons vary in height at different mountain locations?
Answer:
Climate and wind affect growth:
- Strong winds → shorter plants
- Mild climate → taller plants
These changes help survival.
Q54. If a region receives very little rainfall, what types of plants and animals would you expect to find there?
Answer:
Plants: Cactus, thorny bushes
Animals: Camel, desert fox, snakes
Adaptations: Water storage, heat tolerance.
Q55. What will happen if frogs disappear from an area?
Answer:
- Insects will increase (frogs eat insects).
- Snakes may decline (they eat frogs).
- Food chain becomes unbalanced.
Q56. Why do birds have hollow bones?
Answer:
Hollow bones make their bodies lighter and help them fly easily.
Q57. A child says that wheat is a dicot plant. Is this correct? Why or why not?
Answer:
No. Wheat is a monocot because it has parallel venation and fibrous roots.
Q58. How will you classify a plant with hard brown stem and branches starting close to the ground?
Answer:
It is a shrub.
Q59. Why are streamlined bodies important for aquatic animals?
Answer:
They help reduce water resistance and allow smooth swimming.
Q60. What will happen if all forest habitats are converted to cities?
Answer:
- Loss of biodiversity
- Extinction of many species
- Climate imbalance
- Less oxygen production
Application-Based Questions – Chapter 2 – Diversity in the Living World
Q61. Ria observed a plant with soft green stem and small height. Identify the plant group.
Answer:
It is a herb.
Q62. During winter in the mountains, which adaptations help animals survive?
Answer:
- Thick fur
- Layer of fat
- Short ears and tails
- Camouflage colours
Q63. A farmer grows both maize and chickpea. Compare their seeds.
Answer:
- Maize: One cotyledon → monocot
- Chickpea: Two cotyledons → dicot
Q64. Ajay found a feather on the ground. What information can this give about animals living in that area?
Answer:
Feather indicates the presence of birds.
Q65. Nisha observed webbed feet in a duck. How is this adaptation useful?
Answer:
Webbed feet help ducks swim easily in water.
Q66. Why do animals in forests exhibit different colour patterns?
Answer:
To camouflage and protect themselves from predators.
Q67. Karan saw a plant with thick stems storing water. Identify its habitat.
Answer:
The plant belongs to a desert habitat.
Q68. A fish has gills. How does this help in its habitat?
Answer:
Gills help fish absorb oxygen from water.
Q69. What type of root and venation would you observe in radish?
Answer:
Radish has taproot and reticulate venation.
Q70. Why is it harmful to pollute rivers and lakes?
Answer:
- Aquatic animals die.
- Drinking water becomes unsafe.
- Ecosystems get damaged.
Table/Classification-Based Questions – Chapter 2 – Diversity in the Living World
Q71. Classify the following into herbs, shrubs, and trees: mango, tulsi, neem, tomato, rose.
Answer:
- Herbs: Tomato
- Shrubs: Tulsi, Rose
- Trees: Mango, Neem
Q72. Write differences between aquatic and terrestrial habitats.
Answer:
Aquatic habitat:
- Plants and animals live in water
- Example: Fish, seaweed
- Organisms have adaptations like gills, fins
Terrestrial habitat:
- Plants and animals live on land
- Example: Lion, mango tree
- Adaptations include legs, lungs, thick stems
Q73. Classify these animals based on movement: fish, pigeon, goat, earthworm, frog.
Answer:
- Walking: Goat
- Flying: Pigeon
- Swimming: Fish
- Crawling: Earthworm
- Hopping + swimming: Frog
Q74. Fill in the table based on leaf venation and type of root: Hibiscus, Wheat, Banana, Grass, Chickpea.
Answer:
- Hibiscus: Reticulate venation, taproot
- Wheat: Parallel venation, fibrous root
- Banana: Parallel venation, fibrous root
- Grass: Parallel venation, fibrous root
- Chickpea: Reticulate venation, taproot
Q75. Give one example each of monocot and dicot plants and list their features.
Answer:
Monocot: Wheat
- One cotyledon
- Parallel venation
- Fibrous roots
Dicot: Mango
- Two cotyledons
- Reticulate venation
- Taproot
Diagram/Observation-Based Questions – Chapter 2 – Diversity in the Living World
Q76. Draw a leaf with reticulate venation and label its midrib and veins.
Answer:
(Teacher may evaluate drawing)
Reticulate venation shows a network of branching veins on both sides of the midrib.
Q77. Draw a leaf with parallel venation.
Answer:
(Teacher may evaluate drawing)
Parallel venation shows veins running side by side without branching.
Q78. Observe any plant in your surroundings and note its stem type, root type, and venation.
Answer (Example student answer):
Plant: Hibiscus
Stem: Hard and woody
Root: Taproot
Venation: Reticulate
Q79. Identify the type of roots shown in a given diagram (taproot vs fibrous).
Answer:
Taproot: One main root with side roots
Fibrous root: Many roots of equal size from base of stem
Q80. Draw and label a monocot seed.
Answer:
(Teacher may evaluate drawing)
Monocot seed has:
- One cotyledon
- Seed coat
- Embryo
Extra Reasoning Questions – Chapter 2 – Diversity in the Living World
Q81. Why do different groups choose different criteria during grouping activities?
Answer:
Because students observe different features—some choose height, some choose leaf type, some choose stem type. Observation varies from person to person.
Q82. Why does a camel in Ladakh have two humps?
Answer:
Two humps store more fat for survival in cold deserts where food is scarce in winter.
Q83. Why do desert animals have adaptations to prevent water loss?
Answer:
Because water is very limited in deserts, so survival requires minimizing water loss.
Q84. Why are dicot plants usually larger and stronger than monocots?
Answer:
Dicots have taproots and stronger branching stems which support bigger structures.
Q85. Why do plants like climbers need support to grow?
Answer:
They have weak stems and cannot stand upright on their own.
Q86. Why do grasses survive even after grazing animals eat their upper parts?
Answer:
Because grasses have growing points near the ground, so they regrow quickly.
Q87. Why does the colour of many animals help them hide from predators?
Answer:
Camouflage helps animals blend with surroundings to avoid being hunted.
Q88. Why do earthworms come out after heavy rain?
Answer:
Water fills soil spaces and reduces oxygen, so worms come out to breathe.
Q89. Why is the shape of deodar helpful in heavy snowfall?
Answer:
Conical shape and sloping branches help snow slide off easily, preventing breakage.
Q90. Why do herbs complete their life cycle faster than trees?
Answer:
Herbs are small with soft stems and require less time and nutrients to grow.
Assertion–Reason Questions – Chapter 2 – Diversity in the Living World
**Q91. Assertion: Grass has fibrous roots.
Reason: Grass shows parallel venation.**
Answer: Both assertion and reason are true, and reason correctly explains the assertion.
**Q92. Assertion: Fish cannot survive on land.
Reason: Fish breathe through gills which work only in water.**
Answer: Both assertion and reason are true, and reason explains the assertion.
**Q93. Assertion: Cactus has thick stems.
Reason: Thick stems help store water.**
Answer: Both assertion and reason are true, and reason explains the assertion.
Q94. Assertion: Dicot seeds have two cotyledons.
Reason: Cotyledons store food for the baby plant.**
Answer: Both statements are true, but the reason does not explain why dicots have two cotyledons.
Q95. Assertion: Mountain goats have strong hooves.
Reason: Strong hooves help them climb steep slopes.**
Answer: Both assertion and reason are true, and reason explains the assertion.
Extra Long Answer Questions (Chapter 2 – Diversity in the Living World)
Q96. Explain in detail how plants can be grouped using height, stem type, roots, leaves, and seeds.
Answer:
Plants can be grouped using various features:
- Height and stem type:
- Herbs: Small, soft stems
- Shrubs: Medium height, hard stems
- Trees: Tall, thick woody stems
- Root type:
- Taproot: One main root (Hibiscus)
- Fibrous root: Many thin roots (Grass)
- Leaf venation:
- Reticulate venation → Dicots
- Parallel venation → Monocots
- Seed type:
- Monocot seeds: One cotyledon (Wheat)
- Dicot seeds: Two cotyledons (Chickpea)
All these features help in accurate scientific grouping.
Q97. Compare desert, mountain, ocean, and forest habitats in terms of climate, plants, animals, and adaptations.
Answer:
- Desert:
- Climate: Hot day, cold night
- Plants: Cactus
- Animals: Camel
- Adaptations: Water storage, long legs
- Mountain:
- Climate: Cold, snowy
- Plants: Deodar, rhododendron
- Animals: Yak, snow leopard
- Adaptations: Thick fur, sloping branches
- Ocean:
- Climate: Salty water
- Plants: Seaweed
- Animals: Fish, whales
- Adaptations: Fins, gills, streamlined body
- Forest:
- Climate: Moderate
- Plants: Tall trees
- Animals: Lions, deer
- Adaptations: Camouflage, climbing ability
Q98. Describe the full process of observing, recording, and grouping plants during a nature walk.
Answer:
- Observation:
- Look at stems, leaves, flowers, height
- Recording:
- Note venation, stem type, root type, colour
- Prepare tables
- Grouping:
- Group based on height: herbs, shrubs, trees
- Group based on leaves: parallel vs. reticulate venation
- Group based on roots: taproot vs. fibrous
- Conclusion:
- Identify monocots and dicots
- Discuss similarities and differences
Q99. Explain how human activities are causing biodiversity loss. Give preventive measures.
Answer:
Causes:
- Cutting forests
- Pollution
- Construction of cities
- Hunting
- Climate change
Prevention:
- Plant more trees
- Protect habitats
- Reduce pollution
- Create wildlife sanctuaries
- Educate people on conservation
Q100. Discuss the interdependence between plants, animals, and their habitats with examples.
Answer:
- Plants provide food for animals (grass → cow).
- Animals help in pollination (bees → flowers).
- Animals help in seed dispersal (birds → fruits).
- Habitats provide shelter, air, food, water.
- If habitats are damaged, both plants and animals suffer.
This interdependence maintains balance in nature.