| ⇦ | 
| ⇨ |
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: - Which one of the following areas in India, is a hotspot of biodiversity
- Stimulation of a muscle fiber by a motor neuron occurs at:
- Structural and functional unit of contractile apparatus in striated muscle
- At a temperature above 35⁰ C
- Origin of first toothed birds took place in
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
- Which one of the following areas in India, is a hotspot of biodiversity
- Stimulation of a muscle fiber by a motor neuron occurs at:
- Structural and functional unit of contractile apparatus in striated muscle
- At a temperature above 35⁰ C
- Origin of first toothed birds took place in
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
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply