Question

Light plays an important role in the life of all organisms. Name any three physiological processes in plants which are affected by light.

Answer 1

Photosynthesis:

The manufacture of food is dependent on light energy as it is trapped by chlorophyll of the leaf. This energy is harnessed to produce carbohydrates like glucose from carbon dioxide and water.

Growth:

Light influences the directional growth in plants either towards the light source or away from the source of light. Based on the response towards sunlight, growth in plants may exhibit positive or negative phototropism.

Flowering:

The duration of exposure to light influences flowering in plants. This physiological response is termed as photoperiodism.