(a)Explain how does the exchange of gases occur in plants across the surface of stems, roots
and leaves.
(b) How are water and minerals transported in plants ?
Answers
ANSWER :
(a) In plants there are tiny pores called stomata on leaves and lenticels in stem which facilitate the exchange of gases. Carbon dioxide is taken in and oxygen given out {during photosynthesis} and vice versa during respiration.
(b) Water and minerals are transported within the plant by the Xylem vessels (mainly in an upward direction); these are part of the vascular system which also includes Phloem vessels.Phloem transports the products of photosynthesis within the plant, to all parts like the stem, roots, fruits etc. in all direction
Holaaa Mate
Answer:
Just like animals, plants respire to survive as well. Different parts of a plant have different systems or organs to respire gases.
In leaves there is special mouth like openings called stomata which performs the exchange of gases.
In stems of woody plants, there some pores which perform the exchange of gases
.These pores are called Lenticels.
In roots, there are small pores present on the surface of root hair which exchange gases via diffusion.
hope it helps..!!❤