Question

Bob is incorrect as plants do not get all the materials for growth from the soil.
1. Plants absorb light energy( in the form of energy packets or photons) that comes from the sun.
Light is required for the process of photosynthesis ( light reaction).
2. Plants need carbon dioxide for photosynthesis which they obtain from the air.
Gaseous exchange takes place via the stomata present on the lower surface of leaves.

Answer 1

Answer:

The process of making food in plants is known as Photosynthesis. Photosynthesis takes place in Leaves. For photosynthesis the followiong products are required:

•Water

Plants get water through soil. Roots absorb water from soil and transports it to leaves.

•Chlorophyll

The green coloured pigment in plants is known as chlorophyll. It absorbs sunlight.(light reaction)

•Carbon dioxide

There are tiny pores present in cell known as stomata which exchanges gases. Vells get carbon dioxide through stomata.