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Priyanka took a destarched potted plant and set-up an experiment as shown in the figure. She left the plant in sunlight for few hours and then tested the leaves X and Y for starch. Leaf X did not give starch test while leaf Y showed presence of starch.

What is proved by this experiment?

A Chlorophyll is necessary for photosynthesis.
B Carbon dioxide is necessary for photosynthesis.
C Sunlight is necessary for photosynthesis.
D Oxygen is given out during photosynthesis.

The clouds can be described as

Atiny drops of water floating in air.
Cparticles of water vapour.
Bmixture of dust and water vapour.
Drain drops in air.

By which process the water in a lake ultimately return to the oceans or seas?

AThrough evaporation and precipitation
BBy freezing and melting
CBy condensation and infiltration
DThrough filtration and purification

Select the incorrect statement about seed dispersal.

A Coconut seeds are dispersed by water.
B Cotton seeds are dispersed by animals.
C Pea pods disperse seeds by explosion.
D Maple seeds are dispersed by wind.

Study the given flow chart carefully. In which group (P, Q, R and S) fruit of kiwi can be placed?


AP
BQ
CR
DS

_______ is an imaginary line that runs from North Pole to the South Pole. It is tilted at an angle of 23.5 degrees.

AEquator
BAxis
COrbit
DNone of these

Study the given word grid carefully.
Which of the following are NOT hidden in the given word grid?

(i) It is a plant that can survive in salty water and withstand strong winds.
(ii) It is a plant that grows in marshes and has breathing roots.
(iii) It is a plant that has spiny leaves to reduce water loss.
(iv) It is a plant that sheds its leaves in winter to conserve energy.
(v) It is a plant that can float freely on water and has spongy, air-filled body.

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

Refer to the given flow chart and answer the following questions.

Plant W is not able to prepare its own food because of the absence of ____________. Plant Y roots are fixed to the bottom of the pond and have no ________ at all.

A Chlorophyll, Stomata
B Roots, Leaves
C Chlorophyll, Stem
D Leaves, Stomata

Rahul is bitten by a snake while hiking, and his friend Aman needs to act quickly.
What should he do first to save Rahul’s life?

A Remove the snake’s venom by sucking it out.
B Tie a tight bandage above the wound to slowdown blood flow.
C Apply ice directly on the wound.
D Apply salt to the wound.

A small fire broke out in the kitchen when oil in a hot pan is poured. What should be the first action to put out the fire?

A Pour water over the fire.
B Cover the fire with a lid.
C Blow air to reduce the flame.
D Open all the windows for better ventilation.