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Answers
Answer:
The xylem parenchyma is comprised of parenchyma cells. Parenchyma cells are the only living cells in the xylem. They have thin cell walls, large vacuoles, prominent nucleus, and protoplasts.
Sieve tube, in flowering plants, elongated living cells (sieve-tube elements) of the phloem, the nuclei of which have fragmented and disappeared and the transverse end walls of which are pierced by sievelike groups of pores
The trachea, also known as the windpipe, is a cartilaginous tube that connects the larynx to the bronchi of the lungs, allowing the passage of air, and so is present in almost all air-breathing animals with lungs.
Root hair cells (black arrow pointing at one of the root hair cells) are single tubular root cells. Their distinctive lateral elongation increases the surface of exchange between the plant's root system and the soil.
Answer:
A.The main functions of xylem parenchyma include: Storage of food material in the form of starch, fats, tannins and crystals. Radial conduction of water takes place by the ray parenchymatous cell.
B.The main functions of sieve tube members include maintaining cells and transporting necessary molecules with the help of companion cells.
C.The primary function of the trachea is to transport air to and from the lungs. Without a trachea, a person would not be able to breathe.
D.The main function of root hairs is the uptake of water and nutrients from the rhizosphere.