Diversity in the Living World

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NCERT Solutions for Ch 2 Diversity in the Living World Class 6 Science

Book Solutions

1

Here are two types of seeds. What differences do you find among the roots and leaf venation of their plants?

Answer

Wheat is monocot while kidney beans are dicot.

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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

Answer


A. Aquatic: Dolphin, Whale
B. Terrestrial: Horse, Sheep, Squirrel, Pigeon, Earthworm
C. Both aquatic and terrestrial: Frog, Crocodile, Tortoise
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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

Root type and leaf venation of radish is given below:
• Type of root: Taproot (thick, fleshy taproot)
• Leaf venation: Reticulate venation (because radish is a dicot plant)
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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 between mountain goat and goats found in plains:
• Both are goats and belong to same family.
• Both have horns and hooves.
• Both are herbivore animal.
Difference between mountain goat and goats found in plains:

Reasons for differences: These differences are adaptations to their habitats. Mountain goats need thick fur for warmth and shorter legs for better balance on steep slopes. Plains goats have longer legs for running in open areas.
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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


Or,

Group 1: Animals which can fly
• Pigeon
• Bat
• Cockroach
• Grasshopper

Group 2: Animals which cannot fly
• Cow
• Tortoise
• Whale
• Fish
• Lizard

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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 of deforestation:
• Loss of habitats for animals and plants.
• Reduction in biodiversity.
• Climate change due to fewer trees absorbing carbon dioxide.
• Soil erosion


Addressing the challenge:
• Plant more trees (afforestation).
• Create protected areas for wildlife.
• Use resources wisely and reduce waste.
• Public awareness which means educating people about the importance of forests.

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7

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

Answer

A. Plants with reticulate venation: Examples include mango, rose, or any other dicot plant

B. Plants with parallel venation: Examples include grass, wheat, or any other monocot plant

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8

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

Answer

Sanjay could ask following questions for clarificatio:
i. How tall is the gudhal (hibiscus) plant?
ii. Does it have a single main stem or multiple stems?
iii. Are the stems of Gudhal plant woody or soft?
iv. Do the branches start near the ground or higher?
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9

Based on the information in the table, find out 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?

Answer

(a) Plants in group A have reticulate venation in their leaves.
(b) Plants in group B have parallel venation in their leaves.
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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?

Answer

Difference: The duck has webbed feet, while the pigeon has separate toes.
Activity: The webbed feet help the duck swim in water. They act like paddles, making it easier for the duck to move through water.
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