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Roots of mangrove trees grow out of the soil because

A Their roots cannot penetrate the clayey soil.
B Main root is profusely branched and there is no room for roots to thrive.
C Clayey soil is sticky and does not have enough air for the roots of plants to breathe.
D None of these

The season when temperature is moderate and blooming flowers could be seen all around is called ______.

AAutumn
BSpring
CSummer
DWinter

Some animals go to sleep for a long time in the summer months. This phenomenon is called _______.

AMetamorphosis
BMoulting
CAestivation
DHibernation

Select the correct match of the symbol used on map with its name.

A
B
C
DNone of these

Refer to the given figure P showing leaf of a plant. The leaf is then covered with black paper as shown in the figure Q.

The plant was then kept in the sun. After several hours, the leaf was plucked off and the black paper was removed. Select the correct option regarding it.

APart a will have starch as it lacks chlorophyll.
BPart b will not have starch as it is getting sunlight.
CPart c will have starch as it is getting sunlight.
DPart d will not have starch as it lacks chlorophyll.

The given table lists foods that some birds like to eat.

In England, seeds and berries are the only foods available for most birds during the winter. To adapt with this change in availability of food, bird X will most likely show Y. Identify X and Y.

AX-Blue Jay Y-Mimicry
BX-Cardinal Y-Migration
CX-Chickadee Y-Camouflage
DX-Robin Y-Migration

Select the option that correctly fills the blanks in any two of them.
The burning of (i) and (ii) results in the release of harmful pollutants into the air, which causes air pollution.
These pollutants lead to respiratory problems like (iii) in humans and contribute to the formation of (iv).
The increased concentration of gases like (v) contributes to the thinning of the (vi).

A (i) Coal, (ii) Petroleum
B (iii) Asthma, (iv) Global warming
C (v) Carbon dioxide, (vi) Ozone layer
D (ii) Sulphur dioxide, (vi) Nitrogen oxide

A student concludes that the material in a round bowl is liquid. Which statement about the material must be true?

AThe molecules in the material are very closely and tightly packed.
BThe material has a fixed shape.
CThe material does not have a fixed volume.
DThe material takes the shape of its container.

Refer to the given figure showing different layers of the Earth and select the option that correctly identifies W, X, Y and Z.

Mihika saw a bird in her garden with the type of feet shown in the given picture.
Identify the bird that she might have seen.


A Eagle
B Woodpecker
C Parrot
D Sparrow