HORTICULTURE

Detailed explanation-1: -The exchange of oxygen and carbon dioxide in the leaf (as well as the loss of water vapor in transpiration) occurs through pores called stomata (singular = stoma). Normally stomata open when the light strikes the leaf in the morning and close during the night.

Detailed explanation-2: -Carbon dioxide (CO₂), oxygen (O₂) and water (H₂0) commonly move in or out via the stomata. While gas exchange occurs, carbon (C) stays inside the leaf as a building block for the plant. Often, stomata are open during the day when photosynthesis is taking place and closed at night when it stops.

Detailed explanation-3: -Stomata facilitate not only the uptake of CO2 but also the exchange of all gases between the aerial parts of the plant and the atmosphere. Water vapour and oxygen molecules exit the leaf through the same path as CO2 enters, but usually in the opposite direction (Figure

Detailed explanation-4: -The gas exchange in plants takes place through stomata, and the process is called diffusion.

Detailed explanation-5: -During photosynthesis, carbon dioxide is taken in from the atmosphere through the stomata and oxygen is released as a waste product.