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Which one of the following statements is wrong?
Options
(a) When pollen is shed at two-celled stage, doubled fertiliztion does not take place
(b) Vegetative cell is larger thean generative cell
(c) Pollen graints in some plants remain viable for months
(d) Intine is made up of cellulose and pectin
Correct Answer:
When pollen is shed at two-celled stage, doubled fertiliztion does not take place
Explanation:
In over 60 per cent of angiosperms, pollen grains are shed at cell 2-celled stage. In the remaining species the genrative cell divides mitotically to give rise to the two male gamets before pollen grains are shed (3-celled stage).
Related Questions: - Low Ca⁺⁺ in the body fluid may be the cause of :
- In an inflorescene where flowers are bornee laterally in an acropetal
- Which of the following have the highest number of species in nature
- Guttation is a process of loss of water in
- The incorrect statement is Nepenthes
Topics: Reproduction In Plants
(48)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Low Ca⁺⁺ in the body fluid may be the cause of :
- In an inflorescene where flowers are bornee laterally in an acropetal
- Which of the following have the highest number of species in nature
- Guttation is a process of loss of water in
- The incorrect statement is Nepenthes
Topics: Reproduction In Plants (48)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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