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An animal 'X' is found in areas covered with ice and snow.
It has thick layer of fat beneath the skin. It lives in groups to protect itself from cold.
Unscramble the given words to identify an animal'X'.

AIONPRSOC
BESHROESA
CTPOSCOU
DGUNEPNI

Study the given food web and select the correct option for the following questions.

Which one of the following shows the correct grouping of the various organisms in the food web?

Refer to the given experimental set up as shown in the given figure and select the correct option regarding it.


A In X, yeast causes fermentation which converts sugar into lactic acid and carbon dioxide.
B In Y, oxygen gas is released while carbon dioxide gas is absorbed.
C In Y, lime water turns milky.
D Both (B) and (C)

A body is suspended from a string, which is pulled with a force F to one side to the right as shown in the diagram.

Which of the following vector diagrams represent all the forces acting on the body at point A?

A
B
C
D

Which of these can explain the reason for mud houses being common in desert areas like Rajasthan?

A Mud houses remain comparatively cooler in summers.
B Rainfall is very scarce in Rajasthan.
C The roofs are made of thorny bushes.
D Both (A) and (B)

Read the given statements and select the correct option.
Statement-1 : A horse has to pull a cart harder during the first few steps of his motion.
Statement-2 : The first steps are always difficult.

A Both statements-1 and 2 are true and statement-2 is the correct explanation of statement-1.
B Both statements-1 and 2 are true but statement-2 is not the correct explanation of statement-1.
C Statement-1 is true and statement-2 is false.
D Both statements-1 and 2 are false.

In the given food web P, Q, R, S, T and U are consumers. Which of the consumers are both plant and animal-eaters?

(A) P and S

(B) Q and U

(C) R and T

Match Column-I with Column-II and select the correct option from the codes given below.

(A) p - (iv); q - (iii); r-(i); s - (v); t - (ii)

(B) p - (iii); q - (i); r - (iv); s - (v); t - (ii)

(C) p - (iii); q - (iv); r - (i); s - (v); t - (ii)

Read the given passage and answer the questions that follow.
The polar regions are covered with snow. There may also be snowfall in mountain regions during the winter. The trees growing on mountains are cone-shaped, with sloping branches. Many of them, such as pine, have sharp needle-like leaves. Animals living on mountains have thick skin or fur to protect themselves from cold, e.g., yaks and snow leopards.
Why do pines have sharp needle-like leaves?

A This reduces loss of water due to transpiration.
B This reduces chances of catching forest fire.
C This helps the snow to slide-off easily.
D This allows branches to carry loads of snow.