Question 5
Given below are some adaptive features of animals:

(a) Layer of fat under the skin
(b) Long, curved and sharp claws
(c) Slippery body
(d) Thick white fur

Which of them are the adaptive features of a polar bear?

(i) (a) only
(ii) (a) and (b) only
(iii) (a), (b), and (c) only
(iv) (a), (b) and (d) only

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Solution

Adaptive feature of polar bear are: (iv)

i) Layer of fat under the skin - gives them warmth.
ii) Long, curved and sharp claws - helps to walk on ice.
iii) Thick white fur - so that they are not easily visible in the snowy white background.
iv) Slippery body is not an adaptive feature of polar bear.

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Question 9
Choose the odd one from the following options :

(a) Thick layer of fat under the skin
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(d) Wide and large feet with sharp claws

Q. What are the adaptive features of a polar bear?

The statements given below describe certain features that are observed in the pistil of flowers.
i Pistil may have many carpels
ii Each carpel may have more than one ovule
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Q. Question 3
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(ii) Sound requires a medium for propagation.
(iii) Light and sound both require a medium for propagation.
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(a) i, ii and iv only
(b) i and ii only
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(d) ii, iii and iv only

Q. In the given figure, which of the following statements must be true?
(i) a + b = d + c

(ii) a + c + e = 180°

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(a) (i) only

(b) (ii) only

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(d) (ii) and (iii) only

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Animal Adaptation

Standard VII Biology

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Adaptive feature of polar bear are: (iv) i) Layer of fat under the skin - gives them warmth. ii) Long, curved and sharp claws - helps to walk on ice. iii) Thick white fur - so that they are not easily visible in the snowy white background. iv) Slippery body is not an adaptive feature of polar bear.