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Companion cells are closely associated with :
Options
(a) Sieve elements
(b) Vessel elements
(c) Trichomes
(d) Guard cells
Correct Answer:
Sieve elements
Explanation:
Companion cells are narrow, elongated and thin walled living cells. They lie on the sides of the sieve tubes and are closely associated with them through compound plasmodesmata. It is supposed that the nuclei of the companion cells control the activities of the sieve tube through plasmodesmata. Companion cells also help in maintaining a proper pressure gradient in the sieve tube elements
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Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Structural Organisation In Plants
(243)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Green revolution in India occurred during
- Biochemical Oxygen Demand (BOP) in a river water
- Chlorophyll in chlroplast is located in
- Quiescent centre is found in root. The concept of quiiescent centre was proposed
- If a student wants to study about birth rate, death rate, sex ratio, age
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Structural Organisation In Plants (243)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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