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प्रश्न
What is pollination? How does pollination occur?
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उत्तर
Pollination is the transfer of pollen grains from the stamen to the stigma of the pistil. Pollination occurs when pollen grains are carried from the anther to the stigma by insects, birds, wind or water.
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संबंधित प्रश्न
Name the parts A, B and C shown in the following diagram and state one function of each.
State the function of flowers in the flowering plants.
The process of fusion of the male and female gametes is called ______.
Where is the male gamete formed in flowering plants?
Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.
How is the process of pollination different from fertilization?
Name the part of a seed which grows into shoot.
What changes take place in the flower after fertilisation which lead to the formation of seeds and fruit?
The length of pollen tube depends on the distance between :
(a) pollen grain and upper surface of stigma
(b) pollen grain on upper surface of stigma and ovule
(c) pollen grain in anther and upper surface of stigma
(d) upper surface of stigma and lower part of style
The part of a seed which grows and develops into root on germination is :
(a) cotyledon
(b) plumule
(c) follicle
(d) radicle
Write one main difference between asexual and sexual mode of reproduction. Which species is likely to have comparatively better chances of survival – the one reproducing asexually or the one reproducing sexually? Give reason to justify your answer.
Identify A, B, C and D in the given diagram and write their names.
Draw a neat and labelled diagram.
Double fertilization in angiosperms
Explain the sexual reproduction process in plants with a diagram.
Observe the figure below. Write functions of the labelled parts.
Identify the parts A, B, C, and D?
Where does the endothecium layer of anther lobes is present?
The anther wall consists of four wall layers where ______
Which type of development is observed in male gametophytes of plants?
