Question

How does the leaf get carbon dioxide for photosynthesis?

Answer 1

Photosynthesis is a process where a plant uses solar energy to convert into chemical energy. Carbon dioxide is very necessary for a plant because it plays a great role in photosynthesis.

Complete answer:
1)Cellular respiration takes place in both plants and animals where oxygen is consumed and carbon dioxide is emitted out but during photosynthesis, the plants trap the carbon dioxide inside the plant and avoids the emission of carbon dioxide, so that it can be used for the photosynthesis of the plant.

2)But in the question, we are asked about how the leaves get carbon dioxide. The leaf contains small pores that are known as stomata or the stomatal pores. The carbon dioxide from the surrounding can easily enter the leaves through the stomata. When carbon dioxide inside the plant is insufficient for photosynthesis, the leaves absorb carbon dioxide through the stomata.

3)Stomata are present on the epidermal layer of different parts of the plants. They are surrounded by cells known as guard cells that play a major role in the regulation of gaseous exchange that takes place through the stomatal pores.

Note: As we know that photosynthesis comprises of two parts are the light reactions and the dark reactions, the dark reaction of photosynthesis is involved in the conversation of carbon dioxide into glucose that also involves many other substrates that again break down through many reactions, and finally, the energy is provided to the plant.