H. Answer the following in detail.
1. Describe the different types of respiration that takes place in plants.
2. How does exchange of gases take place through the stomata?
3. How does respiration occur in the stems and roots?
4. Write the differences between respiration in plants and animals.
Please answer these questions.
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Answers
Answer:
Answer 1st : As with photosynthesis, plants get oxygen from the air through the stomata. Respiration takes place in the mitochondria of the cell in the presence of oxygen, which is called "aerobic respiration". In plants, there are two types of respiration: dark respiration and photo respiration.
Answer 2nd : Leaves. 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. ... This opens the stoma
Answer 3rd : Diffusion occurs in roots, stems and leaves. Respiration in roots: ... It is through root hairs that only carbon dioxide gets diffused into them and is expelled from the roots of a plant. Thus, respiration in roots of the plant occurs by diffusion of oxygen and carbon dioxide through root hairs.
Answer 4th : Respiration in plant and animal - definition
In plants separate respiratory organs are absent. Respiration takes place through diffusion. In animals respiratory organs are generally present. They produce little heat as compared to animals.