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प्रश्न
Describe the Advantages and Disadvantages of self-pollination to the Plant.
उत्तर
Advantages of self-pollination:
(i) Puri ty of race is maintained.
(ii) Wastage of pollen grains is avoided.
(iii) Less chances of failure of pollination.
(iv) Flowers need not produce scent, nectar or be coloured.
Disadvantages of self-pollination:
(i) Continued self-pollination leads to weakening of the progeny.
(ii ) Poor quality of seeds are produced.
(iii ) Defective or weaker characters cannot be eliminated.
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संबंधित प्रश्न
What are chasmogamous flowers?
State the name of the chief pollinating agent against the corresponding plant by choosing from those given in brackets.
Dahlia_______ .
Differentiate between geitonogamy and xenogamy.
Autogamy can occur in a chasmogamous flower if ______.
A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by ______.
Which of the following plant contain unisexual flower?
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 |
Which one of the following may require pollinators, but is genetically similar to autogamy?
Which of the following floral adapation are adapted by hydrophilous flowers?
Mention any one example of the hydrophilous flower.
