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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
Related Questions: - Both respiration and photosynthesis require
- Male gametes in angiosperms are formed by the division of
- One of the constituents of the panceatic juice while poured into the duodenum in humans
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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
- Both respiration and photosynthesis require
- Male gametes in angiosperms are formed by the division of
- One of the constituents of the panceatic juice while poured into the duodenum in humans
- The net glomerular filtration rate in an average adult is
- Which is not a membrane structure
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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