HORTICULTURE

Detailed explanation-1: -When osmotic pressure of guard cells increases, water enters into it and makes stomata open. When osmotic pressure decreases, water moves out and makes the stomata close due to which stomata become more flaccid. In most cases stomata open at day time and close at night.

Detailed explanation-2: -Stomata are mouth-like cellular complexes at the epidermis that regulate gas transfer between plants and atmosphere. In leaves, they typically open during the day to favor CO2 diffusion when light is available for photosynthesis, and close at night to limit transpiration and save water.

Detailed explanation-3: -stomata open during night and remain closed during the day time.

Detailed explanation-4: -Stomata open in response to blue light to facilitate gas exchange between the plant and the atmosphere. This response is key to terrestrial plant life, as gas exchange is necessary not only for photosynthesis but also for water uptake from the roots.

Detailed explanation-5: -Stomata is open during the daytime to allow gas exchange. Photosynthesis occurs during the day and thus stomata are open to supply the carbon dioxide required for the process. The stomatal openings remain closed at night as photosynthesis is not conducted without sunlight.