Which of the following is not an external factor for plants?

Stomata open at night and close during the day in

If plants are given only visible light,their growth will:

Photosynthetic organisms occur at different depths in the ocean. Do they receive qualitatively and quantitatively the same light? How do they adapt to carry out photosynthesis under these conditions?

Which surface is better adapted for gas exchange in plant leaves?

The Law of Limiting Factors was proposed by: