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प्रश्न
Why do moss plants produce very large number of male gametes? Provide one reason. What are these gametes called?
उत्तर
Moss plants produce a large number of male gametes to increase the chances of fertilisation, as the eggs are located in the archegonium and the male gametes have to swim in water to reach the eggs for fertilisation to occur. The male gametes are called antherozoids.
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संबंधित प्रश्न
Mention two strategies evolved to prevent self-pollination in flowers.
The transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as ______.
Write two ways in which pollination may occur in plants.
Fill in the blank:
Male sex cells in plants are called _________.
Differentiate between the following:
Self pollination and cross pollination.
Put a tick mark (✓) against the correct alternative in the following statements
Vegetative propagation is not observed in:
Name the two types of pollination.
Which of these is a condition that makes flowers invariably autogamous?
In the dioecious aquatic plant shown, identify the characteristics of the male flowers that reach the female flowers for pollination:
| Size of the flower | Colour of flower | The characteristic feature of pollen grain | |
| A | small | brightly coloured | Lightweight and non-sticky |
| B | large | colourless | large and sticky |
| C | small | white | small, covered with mucilage |
| D | large | colourless | non-sticky |
Describe any three adaptations in hydrophilous flowers.
