Question

Companion cells are associated with :

• A. Tracheids
• B. Vessels
• C. Sieve tubes of angiosperms
• D. Sieve tubes of gymnosperms

Answer 1

The correct option is C Sieve tubes of angiosperms

C. Sieve tubes of angiosperms

Reason: In angiosperms, phloem transport food material in the plant. It consists of Sieve tube elements, companion cells, phloem parenchyma and phloem fibres. In flowering plants (angiosperms) sieve tube elements are arranged longitudinally and are in close association with companion cells. The companion cells help in maintaining the pressure gradient in the sieve tubes.