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प्रश्न
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
विकल्प
Monoecious plant bearing unisexual flowers
Dioecious plant bearing only male or female flowers
Monoecious plant with bisexual flowers
Dioecious plant with bisexual flowers
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उत्तर
Dioecious plant bearing only male or female flowers
APPEARS IN
संबंधित प्रश्न
Lever mechanism of pollination is observed in
- Salvia
- Jasmine
- Bougainvillea
- Butea
Why do moss plants produce very large number of male gametes? Provide one reason. What are these gametes called?
Can cross-pollination occur in cleistogamous flowers? Give reason for your answer.
Why does self-pollination not lead to seed formation in self-incompatible species?
Add a note on pollination mechanism in Salvia.
Give the floral adaptations for anemophily.
Fill in the blanks:
The two kinds of pollination are __________ and __________.
Mention any two contrivances in flowers which favour cross-pollination.
Differentiate between geitonogamy and xenogamy (allogamy).
Write different modes of pollination in detail with suitable examples.
Differentiate Between Cross Pollination and Self Pollination:
Very short answer type question:
What is hydrophily?
In some plants anther and stigma mature at the same time this condition is called ______.
Which one of these statements is incorrect?
The following statements seem to describe the water-pollinated submerged plants.
The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is ______
Consider the following statements depicting adaptation of flowers to carryout successful pollination.
- Stigma is long, sticky and unwettable.
- Sepals, petals or perianth (if present) have waxy coating.
- Stamens with long filament and versatile anthers.
- Tubular corolla is seen.
- Flowers are noctumal.
Which of the above statements clearly depict hydrophily?
Mention any one example of the anemophilous flower.
What is epihydrophily?
