Class 06 Science - Diversity in the Living World

Exercises

1. Here are two types of seeds: (a) Wheat and (b) Kidney beans. What differences do you find among the roots and leaf venation of their plants?

Answer:

(a) Wheat: Wheat is a monocot plant. It has seeds with a single cotyledon. Therefore, it typically has parallel venation in its leaves and a fibrous root system.
(b) Kidney beans: Kidney beans are dicot seeds (they split into two parts). Therefore, the plant typically has reticulate venation in its leaves and a taproot system.

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’, terrestrial animals in the area marked ‘B’, and animals living in both habitats in part ‘C’.

Horse, Dolphin, Frog, Sheep, Crocodile, Squirrel, Whale, Earthworm, Pigeon, Tortoise

Answer:

A (Aquatic): Dolphin, Whale.
B (Terrestrial): Horse, Sheep, Squirrel, Earthworm, Pigeon.
C (Both/Amphibians/Semi-aquatic): Frog, Crocodile, Tortoise.

3. Manu’s mother maintains a kitchen garden. One day, she was digging out 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?

Answer: A radish is a taproot. Since it has a taproot system, the leaves of the radish plant will exhibit reticulate venation.

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?

Answer:

Similarities: Both have four legs, hooves, and are herbivores. They belong to the same genus/species group but are adapted to different environments.
Differences:
- Mountain Goat: Has a thick coat of fur/hair to protect against extreme cold. It has specialized hooves for climbing steep, rocky terrain.
- Plains Goat: Has thinner hair suited for a warmer or moderate climate. Its legs and hooves are suited for walking on flat or undulating ground.
Reasons: These differences are adaptations to their specific habitats. The mountain goat needs protection from cold and stability on rocks, while the plains goat is adapted to the conditions of the grasslands or fields.

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.

Answer: Basis of Grouping: Presence of Backbone (Vertebrates vs. Invertebrates)

Group 1 (Vertebrates): Cow, Pigeon, Bat, Tortoise, Whale, Fish, Lizard.
Group 2 (Invertebrates): Cockroach, Grasshopper.

(Alternative Basis: Animals that fly vs. Animals that do not fly)

Fly: Pigeon, Bat, Cockroach, Grasshopper.
Do not fly: Cow, Tortoise, Whale, Fish, Lizard.

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?

Answer:

Effects:
1. Loss of Habitat: Animals and plants lose their homes, leading to a decrease in biodiversity.
2. Climate Change: Cutting trees increases carbon dioxide levels, leading to global warming.
3. Soil Erosion: Without tree roots to hold the soil, it washes away easily.
4. Disruption of Water Cycle: Less transpiration leads to changes in rainfall patterns.
Solutions:
1. Afforestation: Planting more trees to replace those cut down.
2. Sustainable Living: Reducing waste and recycling materials like paper and wood.
3. Protected Areas: Establishing more National Parks and Wildlife Sanctuaries.
4. Awareness: Educating people about the importance of forests and biodiversity.

7. Analyse the flowchart. What can be examples of ‘A’ and ‘B’?

Plant → Does it have leaves? (Yes) → Does it have reticulate venation? → (Yes) A / (No) B

Answer:

A (Reticulate Venation): Rose, Mango, Hibiscus, Pea (Dicot plants).
B (No Reticulate Venation/Parallel Venation): Grass, Wheat, Maize, Bamboo (Monocot plants).

8. Raj argues with his friend Sanjay that “Gudhal (hibiscus) plant is a shrub.” What questions can Sanjay ask for clarification?

Answer: Sanjay can ask the following questions based on the characteristics of shrubs:

Does the plant have a medium height (not as tall as a tree)?
Does it have a hard, woody stem that is not very thick?
Do the branches arise close to the ground rather than high up on the stem?

9. Based on the information in the table, find out examples of these plants for each group.

Group A: Dicot, Taproot Group B: Monocot, Fibrous roots

Answer:

Group A Examples: Mustard, Neem, Peepal, Gram.
Group B Examples: Rice, Maize, Grass, Onion.
(a) Other similarities in Group A: Leaves have reticulate venation; seeds have two cotyledons.
(b) Other similarities in Group B: Leaves have parallel venation; seeds have one cotyledon.

10. Observe the labelled part of a duck. 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?

Answer:

Differences: The duck has webbed feet, where a thin layer of skin connects the toes. Most other birds (like pigeons or crows) have separate toes for perching or walking.
Activity: Webbed feet act like paddles, enabling the duck to swim efficiently in water.

Class 06 Science - Diversity in the Living World

Exercises

1. Here are two types of seeds: (a) Wheat and (b) Kidney beans. What differences do you find among the roots and leaf venation of their plants?

Answer:

(a) Wheat: Wheat is a monocot plant. It has seeds with a single cotyledon. Therefore, it typically has parallel venation in its leaves and a fibrous root system.
(b) Kidney beans: Kidney beans are dicot seeds (they split into two parts). Therefore, the plant typically has reticulate venation in its leaves and a taproot system.

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’, terrestrial animals in the area marked ‘B’, and animals living in both habitats in part ‘C’.

Horse, Dolphin, Frog, Sheep, Crocodile, Squirrel, Whale, Earthworm, Pigeon, Tortoise

Answer:

A (Aquatic): Dolphin, Whale.
B (Terrestrial): Horse, Sheep, Squirrel, Earthworm, Pigeon.
C (Both/Amphibians/Semi-aquatic): Frog, Crocodile, Tortoise.

3. Manu’s mother maintains a kitchen garden. One day, she was digging out 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?

Answer: A radish is a taproot. Since it has a taproot system, the leaves of the radish plant will exhibit reticulate venation.

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?

Answer:

Similarities: Both have four legs, hooves, and are herbivores. They belong to the same genus/species group but are adapted to different environments.
Differences:
- Mountain Goat: Has a thick coat of fur/hair to protect against extreme cold. It has specialized hooves for climbing steep, rocky terrain.
- Plains Goat: Has thinner hair suited for a warmer or moderate climate. Its legs and hooves are suited for walking on flat or undulating ground.
Reasons: These differences are adaptations to their specific habitats. The mountain goat needs protection from cold and stability on rocks, while the plains goat is adapted to the conditions of the grasslands or fields.

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.

Answer: Basis of Grouping: Presence of Backbone (Vertebrates vs. Invertebrates)

Group 1 (Vertebrates): Cow, Pigeon, Bat, Tortoise, Whale, Fish, Lizard.
Group 2 (Invertebrates): Cockroach, Grasshopper.

(Alternative Basis: Animals that fly vs. Animals that do not fly)

Fly: Pigeon, Bat, Cockroach, Grasshopper.
Do not fly: Cow, Tortoise, Whale, Fish, Lizard.

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?

Answer:

Effects:
1. Loss of Habitat: Animals and plants lose their homes, leading to a decrease in biodiversity.
2. Climate Change: Cutting trees increases carbon dioxide levels, leading to global warming.
3. Soil Erosion: Without tree roots to hold the soil, it washes away easily.
4. Disruption of Water Cycle: Less transpiration leads to changes in rainfall patterns.
Solutions:
1. Afforestation: Planting more trees to replace those cut down.
2. Sustainable Living: Reducing waste and recycling materials like paper and wood.
3. Protected Areas: Establishing more National Parks and Wildlife Sanctuaries.
4. Awareness: Educating people about the importance of forests and biodiversity.

7. Analyse the flowchart. What can be examples of ‘A’ and ‘B’?

Plant → Does it have leaves? (Yes) → Does it have reticulate venation? → (Yes) A / (No) B

Answer:

A (Reticulate Venation): Rose, Mango, Hibiscus, Pea (Dicot plants).
B (No Reticulate Venation/Parallel Venation): Grass, Wheat, Maize, Bamboo (Monocot plants).

8. Raj argues with his friend Sanjay that “Gudhal (hibiscus) plant is a shrub.” What questions can Sanjay ask for clarification?

Answer: Sanjay can ask the following questions based on the characteristics of shrubs:

Does the plant have a medium height (not as tall as a tree)?
Does it have a hard, woody stem that is not very thick?
Do the branches arise close to the ground rather than high up on the stem?

9. Based on the information in the table, find out examples of these plants for each group.

Group A: Dicot, Taproot Group B: Monocot, Fibrous roots

Answer:

Group A Examples: Mustard, Neem, Peepal, Gram.
Group B Examples: Rice, Maize, Grass, Onion.
(a) Other similarities in Group A: Leaves have reticulate venation; seeds have two cotyledons.
(b) Other similarities in Group B: Leaves have parallel venation; seeds have one cotyledon.

10. Observe the labelled part of a duck. 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?

Answer:

Differences: The duck has webbed feet, where a thin layer of skin connects the toes. Most other birds (like pigeons or crows) have separate toes for perching or walking.
Activity: Webbed feet act like paddles, enabling the duck to swim efficiently in water.

Class 06 Science - Diversity in the Living World

Class 06 Science - Diversity in the Living World

Exercises

1. Here are two types of seeds: (a) Wheat and (b) Kidney beans. What differences do you find among the roots and leaf venation of their plants?

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’, terrestrial animals in the area marked ‘B’, and animals living in both habitats in part ‘C’.

3. Manu’s mother maintains a kitchen garden. One day, she was digging out 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?

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?

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.

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?

7. Analyse the flowchart. What can be examples of ‘A’ and ‘B’?

8. Raj argues with his friend Sanjay that “Gudhal (hibiscus) plant is a shrub.” What questions can Sanjay ask for clarification?

9. Based on the information in the table, find out examples of these plants for each group.

10. Observe the labelled part of a duck. 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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Class 06 Science - Diversity in the Living World

Class 06 Science - Diversity in the Living World

Exercises

1. Here are two types of seeds: (a) Wheat and (b) Kidney beans. What differences do you find among the roots and leaf venation of their plants?

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’, terrestrial animals in the area marked ‘B’, and animals living in both habitats in part ‘C’.

3. Manu’s mother maintains a kitchen garden. One day, she was digging out 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?

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?

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.

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?

7. Analyse the flowchart. What can be examples of ‘A’ and ‘B’?

8. Raj argues with his friend Sanjay that “Gudhal (hibiscus) plant is a shrub.” What questions can Sanjay ask for clarification?

9. Based on the information in the table, find out examples of these plants for each group.

10. Observe the labelled part of a duck. 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?

On this page