Class 4-Science test solved (Making of food and Adaptations in plants)

Answer: Option B

Explanation

Out of all the given options the only thing which we get directly from plants is Oxygen.

so the correct answer is option B

Answer: Option C

Explanation

Venus flytrap is an insectivorous plant that closes its leaves to trap insect.

Answer: Option C

Explanation

Water lily is an aquatic plant with stomata on the upper surface of the plant. 

Some aquatic plants such as lotus, water lily float on the surface of the water and have stomata on their upper surface of the leaves. Stomata on the upper surface helps in exchange of gases between the plant and the atmosphere.

Answer: Option A

Explanation

The plants that shed their leaves during the autumn and winter months are called decidous trees. This helps them to prevent transpitaion or water loss.

Answer: Option C

Explanation

Heating the leaf on the flame is not a necessary step to test the presence of starch in a leaf.