Why plants are called autotrophs?

The correct option is B-Because they derive their energy directly from the sun to produce food for themselves.

Plants - autotrophs:

1. Plants are called autotrophs because they use the energy of sunlight to store energy in food (glucose and starch).
2. They are not dependent on other organisms for energy and instead directly obtain it from sunlight.
3. Such a type of nutrition is carried out by the process of photosynthesis, wherein the green plants make their own food.
4. Raw materials needed for photosynthesis are chlorophyll, sunlight, water and carbon dioxide.
5. Oxygen is formed as a by-product along with glucose as the end product.
6. Chlorophyll is the abundant pigment present in plants that function by converting light energy into chemical energy.
7. Carbon dioxide + Water → Glucose + oxygen