Class 6 Science — Diversity in the Living World (Chapter 2)
Q.1 to Q.10 — clear, simple answers for Class 6 students. Click Show Answer to view solutions.
Q.1. Here are two types of seeds. What differences do you find among the roots and leaf venation of their plants?
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Answer:
Wheat plants have fibrous roots and leaves with parallel venation.
Kidney bean plants have taproots and leaves with reticulate venation.
| Feature | Wheat (Monocot) | Kidney Bean (Dicot) |
|---|---|---|
| Roots | Fibrous roots | Tap root |
| Leaf venation | Parallel | Reticulate |
💡 Did you know? Monocots like wheat have one cotyledon, while dicots like beans have two.
Q.2. Names of some animals are given below. Group them based on their habitats. Write the names of aquatic animals in the area marked ‘A’ and terrestrial animals in the area marked ‘B’. Enter the names of animals living in both habitats in part ‘C’. Horse, Dolphin, Frog, Sheep, Crocodile, Squirrel, Whale, Earthworm, Pigeon, Tortoise.
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Answer:
| Habitat | Animals |
|---|---|
| Aquatic animals (A) | Dolphin, Whale |
| Terrestrial animals (B) | Horse, Sheep, Squirrel, Pigeon, Earthworm |
| Animals in both (C) | Frog, Tortoise, Crocodile |
💡 Did you know? Amphibians like frogs live both in water and on land at different stages of life.
Q.3. Manu’s mother maintains a kitchen garden. One day, she was digging out a radish from the soil. She told Manu that 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 radish plant?
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Answer:
Type of root: Tap root.
Type of venation: Reticulate (net-like) venation.
💡 Did you know? Radish is a dicot, so it shows typical dicot features like a tap root and reticulate venation.
Q.4. Look at the image of a mountain goat and a goat found in the plains. Point out the similarities and differences between them. What are the reasons for these differences?
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Answer:
Similarities:
- Both are goats and belong to the same family.
- Both eat plants, they are herbivores.
Differences:
| Feature | Mountain Goat | Plains Goat |
|---|---|---|
| Fur | Thick, long fur to keep warm | Shorter fur for warmer areas |
| Body | Stocky and strong for climbing | Leaner build for flat land |
| Hooves | Rough, gripping hooves for rocks | Smoother hooves for grass and soil |
Reason: These differences are adaptations that help each goat survive in its environment.
💡 Did you know? Adaptations form over many generations to help animals live better in their habitats.
Q.5. 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.
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Answer:
We can group them by whether they have a backbone or not.
| Animals with backbone (Vertebrates) | Animals without backbone (Invertebrates) |
|---|---|
| Cow, Pigeon, Bat, Tortoise, Whale, Fish, Lizard | Cockroach, Grasshopper |
💡 Did you know? Vertebrates have a backbone. Invertebrates do not.
Q.6. As the population grows and people want more comfortable lives, forests are being cut down to meet various needs. How can this affect our surroundings? How do you think we can address this challenge?
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Answer:
Effects of cutting forests:
- Climate can change, temperatures may rise.
- Animals may lose their homes, causing loss of biodiversity.
- Soil may erode and cause floods.
Ways to address it:
- Plant more trees and protect forests.
- Make and follow laws to stop unnecessary cutting.
- Reduce, reuse, and recycle to lower demand on forest resources.
💡 Did you know? Trees help clean air by taking in carbon dioxide and giving out oxygen.
Q.7. Analyse the flow chart. What can be examples of ‘A’ and ‘B’?
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Answer:
(A) — Plants having leaves with reticulate venation have tap roots.
(B) — Plants that do not have reticulate venation (that is, those with parallel venation) have fibrous roots.
💡 Did you know? Most monocots have parallel venation and fibrous roots, while most dicots have reticulate venation and a tap root.
Q.8. Raj argues with his friend Sanjay that “Gudhal (hibiscus) plant is a shrub”. What questions can Sanjay ask for clarification?
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Answer:
- What is the height of the Gudhal (hibiscus) plant?
- Is the stem woody or soft?
- Does the stem branch near the base?
💡 Did you know? A shrub usually has many stems and is shorter than a tree.
Q.9. Based on the information in the table, find examples of these plants for each group. (a) What other similarity do plants of group A have? (b) What other similarity do plants of group B have?
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Answer:
| Group | Type of seed | Type of root | Examples |
|---|---|---|---|
| A | Dicot | Taproot | Gram, Bean, Mango |
| B | Monocot | Fibrous root | Wheat, Rice, Maize |
(a) Plants of group A have reticulate venation.
(b) Plants of group B have parallel venation.
💡 Did you know? Many cereal crops are monocots with parallel venation and fibrous roots.
Q.10. Observe the labelled part of a duck in the picture given below. What differences do you observe in the feet of the duck compared to the other birds? Which activity would the duck be able to perform using this part?
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Answer:
Ducks have webbed feet, while birds like pigeons have separate toes. Webbed feet act like paddles, helping ducks swim easily in water.
💡 Did you know? Webbed feet increase the surface area and make swimming more efficient.