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Which of the following internal organs does the structure in the given figure protects?

(i) Brain (ii) Lungs (iii) Heart (iv) Intestine

A(i), (ii) and (iii) only
B(ii) and (iii) only
C(ii), (iii) and (iv) only
D(ii) only

Which of the following statements is correct about dodder plant?

AIt can prepare its food as well as eat insects.
BIt has special structures called pitchers having digestive liquids.
CIt can obtain nutrition from other plants as it cannot prepare its own food.
DIt depends on dead and decaying plants and animals for food.

Refer to the given figure of soil profile and select the correct statements regarding the layers P, Q, and R.

(i) Layer Q is the subsoil and roots of plants may grow till this layer.
(ii) Layer R is the bedrock and it contains abundant water.
(iii) Layer P is the topsoil which is the most fertile layer but lack humus.
(iv) Layer R is the bedrock and it may be a source of metals such as gold, copper, etc.
(v) Layer P supports plant growth.

A (i) and (ii) only
B (ii) and (iv) only
C (i), (ii) and (iii) only
D (i), (iv) and (v) only

In an experiment demonstrating the evolution of oxygen in Hydrilla, sodium bicarbonate is added to water in the experimental set-up.
What would happen if all other conditions are favourable?

A Amount of oxygen evolved decreases as carbon dioxide in water is absorbed by sodium bicarbonate.
B Amount of oxygen evolved decreases as the availability of carbon dioxide increases.
C Amount of oxygen evolved increases as the availability of carbon dioxide increases.
D Amount of oxygen evolved increases as carbon dioxide in water is absorbed by sodium bicarbonate.

Read the given passage carefully.
Houseflies go through __a__ stages in their life cycle. The housefly lays hundreds of eggs at a time. Each egg hatches into a __b__ , which is called __c__.
After some days, it becomes barrel-shaped, which is known as __d__ .
Select the option which correctly fills any three blanks.

A a - Four , c - Nymph , d - Cocoon
B b - Larva , c - Maggot , d - Pupa
C a - Three , b - Larva , d - Pupa
D b - Maggot , c - Pupa , d - Nymph

Which of the following figures will replace the question mark (?) in the given figure matrix?


A
B
C
D

Refer to the given dichotomous key.
I. (a) Plant reproduces through seeds. – Go to II
(b) Plant reproduces through other parts. – Go to III
II. (a) Seeds have wings or hair-like structures for dispersal. – P
(b) Seeds have hooks or spines to stick to animal fur. – Q
III. (a) Plant reproduces through underground stems. – R
(b) Plant reproduces through tiny structures called spores. – S
Select the correct statement regarding P, Q, R and S.

A P could be Xanthium while Q could be dandelion.
B R could be potato while S could be fern or moss.
C P could be dispersed by water while Q could be dispersed by the explosion of the fruit.
D R could be Bryophyllum while S could be coconut.

Which of the following Venn diagrams best represents the relationship amongst, “Doctors, Men and Singers”?

A
B
C
D

Refer to the given Venn diagram about birds and select the option that correctly identifies any two among W-Z.


AW-Ostrich, X-Penguin
BZ-Penguin, X-Swan
CW-Kiwi, Y-Duck
DZ-Duck, Y-Pigeon

Feathers that are small, fluffy, soft and keep the bird’s body warm are called ________.

A Flight feathers
B Warm feathers
C Body feathers
D Down feathers