NEET BIOLOGY

Detailed explanation-1: -The correct option is B False. Photosynthesis & Respiration in plants: Plants breathe at all times of the day and night. Photosynthesis and respiration occur throughout the day, whereas only respiration and dark processes occur at night.

Detailed explanation-2: -Photosynthesis is not performed by plants at night. Plants can only undergo photosynthesis at night if they are exposed to the appropriate wavelengths of artificial light. With the help of the chlorophyll pigment, light energy is absorbed. By the process of photosynthesis, light energy is turned into chemical energy.

Detailed explanation-3: -Photosynthesis is not an event but rather a process. It occurs continuously whenever sunlight is present. As soon as the sun rises, photosynthesis begins. Energy from sunlight drives the process and so will continue as long as sunlight is available.

Detailed explanation-4: -Photosynthesis occurs only during daytime since sunlight is an important component of the same. Whereas, respiration is a continuous process that takes place at day and night.

Detailed explanation-5: -Sunlight acts as the light source essential for the process. At night, due to absence of sunlight, photosynthesis stops.