AP BIOLOGY

PLANTS

PLANT TISSUE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following forms the main conducting unit of the xylem?
A
Tracheids
B
Vessels
C
Xylem fibres
D
Xylem parenchyma
Explanation: 

Detailed explanation-1: -The main function of the xylem is water transport from roots to the other parts of the plant. Xylem also provides mechanical strength. Tracheids and vessels are the main elements for conducting water.

Detailed explanation-2: -Final answer: The chief water-conducting elements of the xylem in gymnosperms are tracheids.

Detailed explanation-3: -Conduction of water by xylem vessels elements is an active process with energy supplied by xylem parenchyma, rich in mitochondria.

Detailed explanation-4: -1: Tracheids and vessel elements: Tracheids (top) and vessel elements (bottom) are the water conducting cells of xylem tissue.

There is 1 question to complete.