Home / Unit-8 Plant Physiology / Question
MCQ
Sieve tube cells do not have a nucleus; they are assisted by?
Unit-8 Plant Physiology
A Xylem vessels
B Companion cells
C Guard cells
D Root hairs
Explanation

Companion cells keep sieve tubes alive and functional through their nucleus and metabolism.

Related MCQs

Guttation is the loss of water in liquid form through?
Unit-8 Plant Physiology View
Active transport requires?
Unit-8 Plant Physiology View
In phloem transport, which part of a plant is considered the source?
Unit-8 Plant Physiology View
Which sugar is mainly transported in the sieve tubes?
Unit-8 Plant Physiology View
The upward movement of water in the xylem is chiefly driven by?
Unit-8 Plant Physiology View
Water can rise to the tops of tall trees mainly because of the?
Unit-8 Plant Physiology View