Explain how does the exchange of gases occur in plants across the surface ofstems,roots and leaves. How are water and minerals transported in plants?
Answers
Answer:
In all the three plant parts the exchange of gases takes place through diffusion. However the surface of a young stem will have stomata, while that of an older stem will have lenticels. ... Lenticels are open pores. In roots stomatal pores as well as lenticels are absent, exchange of gases occurs through root hairs.
Explanation:
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
In plants, minerals and water are transported through the xylem cells from soil to the leaves. The xylem cells of the stem, roots, and leaves are interconnected forming a conducting channel reaching all plant parts.