NCERT Question-Answer Solution for Class 6 Science Chapter 2 – Diversity in the Living World
Complete NCERT Question–Answer Set for Class 6 Science (Curiosity Textbook) – Chapter 2: Diversity in the Living World
Class 6 Science NCERT Solution – Chapter 2 Diversity in the Living World
Diversity in the Living World – Full NCERT Question–Answer Set (CBSE Class 6 Science – Curiosity Book)
Q1. Here are two types of seeds. What differences do you find among the roots and leaf venation of their plants?
(a) Wheat (b) Kidney beans
Answer:
Wheat:
- Wheat is a monocot seed.
- Its leaves have parallel venation.
- It has a fibrous root system.
Kidney Beans (Rajma):
- Kidney beans are dicot seeds.
- Their leaves show reticulate venation.
- They have a taproot system.
Q2. Names of some animals are given below. Group them based on their habitats.
Write:
- Aquatic animals in A
- Terrestrial animals in B
- Animals that live in both habitats in C
Horse, Dolphin, Frog, Sheep, Crocodile, Squirrel, Whale, Earthworm, Pigeon, Tortoise
Answer:
A – Aquatic animals
- Dolphin
- Whale
(Crocodile and Tortoise can also live in water, but they do not live only in water.)
B – Terrestrial animals
- Horse
- Sheep
- Squirrel
- Earthworm
- Pigeon
C – Animals living both on land and in water (Amphibians / semi-aquatic)
- Frog
- Crocodile
- Tortoise
Q3. Manu’s mother dug out radish from the soil and said radish is a kind of root. Examine a radish and write what type of root it is. What type of venation would you observe in the leaves of a radish plant?
Answer:
- Radish has a taproot.
- The leaves of radish show reticulate venation.
Q4. Look at the image of a mountain goat and a goat found in the plains. Point out similarities and differences. What are the reasons for these differences?
Answer:
Similarities:
- Both are goats.
- Both have four legs, hooves, and similar body shape.
- Both eat grass and plants.
Differences:
Mountain Goat:
- Has strong and hard hooves for climbing rocks
- Has thick fur to protect from cold
- Body is stocky for balance
Goat of the plains:
- Hooves are softer
- Fur is thinner
- Body is less muscular
Reason:
These differences are adaptations to help mountain goats survive in cold, rocky, steep mountainous regions.
Q5. Group the following animals into two groups based on any feature other than those discussed in the chapter—
cow, cockroach, pigeon, bat, tortoise, whale, fish, grasshopper, lizard
Answer:
We choose body covering as the feature.
Group 1 – Animals with hair/fur (Mammals):
- Cow
- Bat
- Whale
Group 2 – Animals without hair/fur (Insects, reptiles, birds, fish):
- Cockroach
- Pigeon
- Tortoise
- Fish
- Grasshopper
- Lizard
(Any other valid grouping method is also correct.)
Q6. As the population grows, forests are being cut down for human needs. How can this affect our surroundings? How can we address this challenge?
Answer:
Effects of cutting forests:
- Loss of habitats of plants and animals
- Decrease in biodiversity
- Soil erosion
- Less rainfall
- Increase in temperature
- Extinction of many species
How to address the challenge:
- Plant more trees (afforestation)
- Protect forests and wildlife
- Create more protected areas like national parks
- Reduce unnecessary cutting of trees
- Promote awareness about conservation
- Use resources carefully
Q7. Analyse the flowchart. What can be examples of ‘A’ and ‘B’?
If a plant has leaves → reticulate venation → A
If a plant has leaves → parallel venation → B
Answer:
- A: Plants with reticulate venation and taproot
- Example: Hibiscus, Mango, Bean, Radish
- B: Plants with parallel venation and fibrous roots
- Example: Wheat, Grass, Banana, Maize
Q8. Raj says that “Gudhal (Hibiscus) plant is a shrub.” What questions can Sanjay ask for clarification?
Answer:
Sanjay may ask questions like:
- Is the hibiscus plant medium in height?
- Does it have multiple woody stems close to the ground?
- Are the stems hard but thin?
- Do branches arise near the base?
If the answers are yes, then hibiscus is correctly identified as a shrub.
Q9. Based on the information in the table, find examples for these groups.
Group A – Dicot plants + Taproot
Group B – Monocot plants + Fibrous roots
Answer:
Group A – Dicot plants (Taproot):
Examples:
- Bean
- Hibiscus
- Mustard
- Mango
Group B – Monocot plants (Fibrous roots):
Examples:
- Wheat
- Maize
- Lemongrass
- Grass
(a) Other similarities in Group A:
- Reticulate venation
- Seeds have two cotyledons
(b) Other similarities in Group B:
- Parallel venation
- Seeds have one cotyledon
Q10. Observe the duck’s feet. What differences do you see compared to other birds? What activity can the duck perform using this part?
Answer:
Differences:
- The duck has webbed feet.
- Other birds (like pigeons) have separate toes, not connected by skin.
Activity the duck can perform:
- Webbed feet help ducks swim easily in water because they act like paddles.
Keywords – Define all
- Adaptation: Special features helping plants/animals survive.
- Biodiversity: Variety of plants and animals in a region.
- Cotyledon: Seed leaf.
- Dicot plants: Plants having two cotyledons.
- Monocot plants: Plants with one cotyledon.
- Habitat: Natural home of an organism.
- Fibrous root: A bunch of thin roots.
- Taproot: One main root with side roots.
- Herbs: Small plants with soft stems.
- Shrubs: Medium plants with multiple woody stems.
- Tree: Tall woody plant.
- Venation: Arrangement of veins in a leaf.
- Reticulate venation: Net-like venation.
- Parallel venation: Veins run parallel.
- Amphibians: Animals that live in water and on land.
- Aquatic: Water-living.
- Terrestrial: Land-living.
Extended Questions from Chapter – Diversity in the Living World
1. Q: What message does the wise saying at the beginning of the chapter convey?
A: The saying compares good people to trees — both face hardships themselves but provide benefits, comfort, and support to others.
2. Q: Why did Madam Sulekha invite Dr Raghu and Maniram Chacha to school?
A: She invited them to facilitate an exciting nature walk for the students.
3. Q: Who is Dr Raghu and what is his profession?
A: Dr Raghu is a scientist at a nearby Research Laboratory.
4. Q: What special skill does Maniram Chacha have?
A: He can mimic bird calls and identify many plants and animals.
5. Q: What things did the teacher ask students to carry for the nature walk?
A: A notebook, a pen, and a water bottle.
6. Q: What variety of living organisms did the students observe on the nature walk?
A: Grasses, bushes, trees, birds, butterflies, and monkeys.
7. Q: According to Dr Raghu, what is an example of diversity in birds?
A: Each bird has a unique chirp.
8. Q: What type of stem does common grass have?
A: Soft and thin stem.
9. Q: What type of leaves arrangement does Tulsi have?
A: A pair of leaves in opposite directions.
10. Q: What are veins in a leaf?
A: Thin lines visible on leaves that form patterns called venation.
11. Q: What is reticulate venation? Give an example.
A: A net-like pattern of veins; example: hibiscus leaf.
12. Q: What is parallel venation? Give an example.
A: Veins run parallel to each other; examples: banana and grass leaves.
13. Q: What is the difference between taproot and fibrous root?
A:
- Taproot: One main root with smaller side roots (e.g., mustard).
- Fibrous root: Many similar-sized roots arising from the stem base (e.g., grass).
14. Q: Which type of plants generally have taproots?
A: Plants with reticulate venation, usually dicots.
15. Q: Which type of plants generally have fibrous roots?
A: Plants with parallel venation, usually monocots.
16. Q: What is a dicot seed? Give an example.
A: A seed with two cotyledons; example: chickpea.
17. Q: What is a monocot seed? Give an example.
A: A seed with one thin cotyledon; example: maize.
18. Q: What observable relation exists among seed type, leaf venation, and root system?
A:
- Dicots: Reticulate venation + taproot.
- Monocots: Parallel venation + fibrous root.
19. Q: What criterion can be used to group animals?
A: Their food habits, body colour, movement, and place of living.
20. Q: What body part do birds use for movement?
A: Wings (for flying) and legs (for walking).
21. Q: What is the importance of grouping plants and animals?
A: It makes the study of diverse living organisms easier and more organised.
22. Q: Where do fish live and how do they move?
A: Fish live in water and move using fins.
23. Q: What are creepers?
A: Plants with weak stems that spread on the ground.
24. Q: What are climbers?
A: Plants with weak stems that climb using support.
25. Q: What does biodiversity mean?
A: The variety of plants and animals in a particular region.