NEET BIOLOGY

PLANT PHYSIOLOGY

TRANSPORT IN PLANT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is not a function of lignin in xylem vessels?
A
prevents xylem from collapsing inwards
B
waterproofing to prevent water loss
C
makes cell wall thicker
D
allows water to be move into adjacent xylem vessels
Explanation: 

Detailed explanation-1: -Complete answer: The storage of metabolic products is not a function of xylem.

Detailed explanation-2: -Lignin provides mechanical strength and resistance against pathogens, and makes the cell walls impermeable to water, thus enabling the transport of solutes via tracheids in the xylem tissue.

Detailed explanation-3: -The walls of xylem cells are lignified (strengthened with a substance called lignin ). This allows the xylem to withstand pressure changes as water moves through the plant.

Detailed explanation-4: -The Correct Answer is Option 2 i.e Sieve tubes.

Detailed explanation-5: -Xylem does not help in the transport of photo sent its or sugars. Instead, it helps only in the transport of water and minerals. Therefore, the first statement is not true.

There is 1 question to complete.