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प्रश्न
Give reason for the following:
Fertilization cannot take place in flowers if pollination does not occur.
Why cannot fertilization take place in flowers if pollination does not occur?
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उत्तर
In flowering plants, male gametes are produced in the pollen grains inside the anther. Pollination brings the pollen grains having male gametes from the anther to the stigma. Upon successful arrival of pollen grains on the stigma, a pollen tube is formed where they take male gamete to the female gamete or egg present in the ovule for fertilisation. So, if pollination does not occur, fertilisation will also not take place.
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संबंधित प्रश्न
Match the following:
| Column A | Column B |
| (i) Stigma | (a) Neuron |
| (ii) Pepsin | (b) Carpel |
| (iii) Dendrites | (c) Protein |
| (d) Stamen |
Name the parts labelled as A, B, C and D in the diagram given below:
A flower may have either male or female reproductive parts. Such a flower is called ______.
Name the male part of the flower.
Where are a plant's sex organs located?
What is the name of female organ of a flower (other than carpel)?
Where is the male gamete formed in flowering plants?
What is made in anther of a flower?
How is the process of pollination different from fertilization?
What is pollination? How does pollination occur?
Fill in the blank:
Seeds are formed from________.
Mention the function of Stigma.
What is cleistogamy? Write one advantage and one disadvantage of it, to the plant.
What is meant by pollination?
Pollen grains are formed by _________ division in locules of anthers.
The ovule of an angiosperm is technically equivalent to ______
How many middle layers are generally present in the wall of the anther lobes?
Flowers showing ornithophily show few characteristic like ______.
Pollen grains are produced by ______
Give any two examples of agents of pollination.
