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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: - Formation of liquid endosperm in coconut takes place because
- Monoecious plant of Chara shows occurrence of :
- In which of the following, reproductive structures lack a layer of sterile vegetative
- The most important example of point mutation is found in a disease called
- The blood calcium level is lowered by the deficiency of
Topics: Reproduction In Plants
(48)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Formation of liquid endosperm in coconut takes place because
- Monoecious plant of Chara shows occurrence of :
- In which of the following, reproductive structures lack a layer of sterile vegetative
- The most important example of point mutation is found in a disease called
- The blood calcium level is lowered by the deficiency of
Topics: Reproduction In Plants (48)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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