User Forum

The given figure represents the stomach of ruminants with its four chambers labelled as P, Q, R and S. Which chambers allow grazing animals like sheep, cattle etc. to efficiently digest cellulose, a common carbohydrate in plants and how ?

(A) P, Q, S; these chambers secrete cellulase enzyme.

(B) P and Q; these chambers contain billions of bacteria that digest cellulose.

(C) R and S; these chambers contain billions of bacteria that digest cellulose.

Observe the picture. Which system(s) of the boy's body is/are involved in helping him to escape?

(A) (d) only

(B) (d) and (e)

(C) (d), (e) and (f)

Rina puts a magnet near object L. The south pole of the magnet attracts both parts J and K of the object L. Which of the following statements are true ?

1. Object L is made of steel.

2. Object L is made of copper.

3. The north pole of the magnet will attract part J of object L.

4. The north pole of the magnet will attract part K of object L.

(A) 1 and 3

(B) 2 and 4

(C) 1, 3 and 4

Which layers of an egg perform the following functions?
1.  Protects the embryo and provides it with water.
2.  Provides food to the developing baby.

                1                        2

A Egg shell             Yolk
B Albumin              Yolk
C Yolk                     Embryo
D Albumin               Embryo

Fossil fuels formed over a long period of time because heat and pressure were applied to

A Nitrogen mixed in the water
B Organisms buried in the ground
C Carbon filtered through limestone
D Bacteria on top of the mud

The given set-up shows the separation process of a mixture of water and materials X and Y.
X and Y respectively are_______.


A Mud and salt
B Salt and sugar
C Sugar and salt
D Mud and clay

Read the given statements and select the correct option.
Statement 1 : Constructing bunds or small check dams helps in recharging the aquifers.
Statement 2 : Bunds or small check dams trap the water or slow its flow and provide more time for water to percolate down.

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.

How many numbers of food chain are there in the given food web?

(A) 6

(B) 9

(C) 7

Which one of the following is not a similarity between Earth and Moon?
1. Both do not give off light of their own
2. Both are round in shape
3. Both are Sun's satellite
4. Both have gravitational pull

A1 and 2
B2 and 3
C3 and 4
D4 and 1

What is the smallest number of shaded squares that must be added so that the lines AB and CD are both lines of symmetry ?

(A) 2

(B) 3

(C) 4