NEET BIOLOGY

Detailed explanation-1: -If they do not get enough light, they will stop growing, making them look pale or yellowish. They may even fail to flower. That happens because plants need light for photosynthesis – without it, they start to wilt and eventually die because they will not have any food or nutrients.

Detailed explanation-2: -The plant will die within a few hours as it cannot produce food without sunlight.

Detailed explanation-3: -Sunlight is required for the plants to perform photosynthesis. Plants produce food from carbon dioxide and water only in the presence of sunlight. So, if kept in dark, the plants will not be able to perform photosynthesis and will eventually die.

Detailed explanation-4: -Plants cannot survive in total darkness. All plants, with the exception of a few that live on other organisms, use a process called photosynthesis to obtain the energy they need. The vast majority of plants are autotrophs-they are self-feeding and require sunlight to survive.

Detailed explanation-5: -In the absence of light, the production of chlorophyll-a molecules stops and they get broken slowly. This changes the colour of the leaf gradually to light green. During this process, the xanthophyll and carotenoid pigments become predominant, causing the leaf to become yellow.