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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: - Which of the following with respect to early experiments of photosynthesis
- Photochemical combination of hydrocarbons and nitrogen oxides emitted by automobile
- Which of the following structures helps in the respiration of lichens?
- Biological species concept emphasises on
- The organelle common among prokaryotic and eukaryotic cell is
Topics: Reproduction In Plants
(48)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following with respect to early experiments of photosynthesis
- Photochemical combination of hydrocarbons and nitrogen oxides emitted by automobile
- Which of the following structures helps in the respiration of lichens?
- Biological species concept emphasises on
- The organelle common among prokaryotic and eukaryotic cell is
Topics: Reproduction In Plants (48)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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