Question

The main ingredients of photosynthesis are:

• A. Chlorophyll, ${\text{CO}}_2$, ${\text{O}}_2$, ${\text{H}}_2\text{O}$
• B. Chlorophyll, light, ${\text{CO}}_2$, ${\text{H}}_2\text{O}$
• C. n(${\text{CH}}_2\text{O}$), light and ${\text{CO}}_2$
• D. Chlorophyll, ${\text{O}}_2$, Light, ${\text{H}}_2\text{O}$

Answer 1

The correct option is B Chlorophyll, light, ${\text{CO}}_2$, ${\text{H}}_2\text{O}$

A combination of ${\text{CO}}_2$ and water along with the green pigments of the plant (chlorophyll) in the presence of sunlight are required to make complex carbohydrates [n(${\text{CH}}_2\text{O}$)]. Oxygen is also released during the process of photosynthesis.
Oxygen is a by-product of photosynthesis and not an ingredient of photosynthesis. n(${\text{CH}}_2\text{O}$) is one of the end products of photosynthesis and not an ingredient of photosynthesis.