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प्रश्न
Name the two types of pollination.
उत्तर
The two types of pollination found in flowering plants are.
- Self-pollination – that occurs within the same plant.
- Cross-pollination – that occurs between two flowers of two different plants but of the same kind.
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संबंधित प्रश्न
A flower of tomato plant following the process of sexual reproduction produces 240 viable seeds.
Answer the following questions giving reasons :
(a) What is the minimum number of pollen grains that must have been involved in the pollination of its pistil?
(b) What would have been the minimum number of ovules present in the ovary?
(c) How many megaspore mother cells were involved?
(d) What is the minimum number of microspore mother cells involved in the above case?
(e) How many male gametes were involved in this case?
Why does self-pollination not lead to seed formation in self-incompatible species?
Enlist advantages and disadvantages of cross pollination
Fill in the blank:
Male sex cells in plants are called _________.
Differentiate between geitonogamy and xenogamy.
Choose the correct statement from the following.
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 |
Advantage of cleistogamy is:
Autogamy can occur in a chasmogamous flower if ______.
Name the pollinating agent of a flowering plant with large and coloured flowers with sticky stigma. State one characteristic feature of the pollen grains produced in such flowers.
