Question

Centripetal and centrifugal xylem are important features of

Answer 1

Exarch is used when there is more than one strand of primary xylem in root or stem, and the xylem develops from outside to inside that is centripetal, while endarch is used when there is more than one strand of primary xylem in root or stem, and the xylem develops from inside to outside that is centrifugally.

Answer 2

Centripetal and centrifugal xylem are the important features of

A

Root and stem respectively

B

Exarch and endarch respectively

C

Endarch and exarch respectively

D

Both (1) and (2)

Solution

Exarch is used when there is more than one strand of primary xylem in root or stem, and the xylem develops from outside to inside that is centripetal, while endarch is used when there is more than one strand of primary xylem in root or stem, and the xylem develops from inside to outside that is centrifugally.

So, the correct answer is option B.