NEET BIOLOGY

Detailed explanation-1: -Photosynthesis, comes from two words, photo meaning ‘’light” and synthesis meaning “to make". Photosynthesis evolved billions of years ago as a way for the first living cells to make their own nutrition from commonly occuring natural elements of air, water and light.

Detailed explanation-2: -Plants absorb sunlight and turn that energy into food; the process is known as photosynthesis. This is a compound word made up of photo (which means “light") and synthesis (which means “to put together").

Detailed explanation-3: -Since the synthesis of food occurs in the presence of sunlight, it is called photosynthesis (Photo: light; synthesis : to combine). So we find that chlorophyll, sunlight, carbon dioxide and water are necessary to carry out the process of photosynthesis. It is a unique process on the earth.

Detailed explanation-4: -What is Phototropism? “Photo” means light, and “tropism” means turning. Phototropism is the phenomenon by which the plant bends in the direction of light. Light is required by the plants to stimulate energy production by the process of photosynthesis.