Question

The raw materials for photosynthesis are:
A.$C{{O}_{2}}$ and ${{H}_{2}}O$
B.Chlorophyll alone
C.$C{{O}_{2}}$, ${{H}_{2}}O$ and sunlight
D.$C{{O}_{2}}$, ${{H}_{2}}O$, sunlight and chlorophyll

Answer 1

Hint: Photosynthesis is an important biological process in which green plants prepare food in the form of simple chemical compounds such as sugars. It is specially carried out by the green plants.

Complete answer:
- In the process of photosynthesis, the plants synthesize nutrients from capturing the light energy and convert it into chemical energy.
- The plants make food with the help of solar energy they receive from the sun. Plants prepare food and make it available for other organisms.
- The energy of the sun is trapped by the plants to make chemicals in the form of organic and inorganic compounds. The compounds release the stored chemical energy to feed the different activities of the living organisms.
- Apart with sunlight, there are some more raw materials that are required and are necessary for the photosynthetic process. Along with sunlight, $C{{O}_{2}}$ and ${{H}_{2}}O$ are the raw materials necessary for photosynthesis.
- $C{{O}_{2}}$ is available in the atmosphere as a gas and taken up by plants. The living animals exhale $C{{O}_{2}}$ as a waste product obtained after digestion of food.
- ${{H}_{2}}O$ is a vital requirement for photosynthesis. It is absorbed by the roots of the plants and through their conducting system of cells, it reaches the leaves and to photosynthetic cells where the process takes place.

Therefore, the answer to the question is option (C) $C{{O}_{2}}$, ${{H}_{2}}O$ and sunlight.

Note:
The photosynthetic process is a biological process, important not only for plants but is useful to other animals as well. With the using up the $C{{O}_{2}}$ from the atmosphere, ${{H}_{2}}O$ from the soil and sunlight, the plants produce simple chemical compounds as food.