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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
With the help of a suitable example, explain protandry.
Geitonogamous flowering plants are genetically autogamous but functionally cross-pollinated. Justify.
Why angiosperm anthers are called dithecous?
Add a note on pollination mechanism in Salvia.
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 ______.
When maturation time of reproductive parts in a flower is different.
Mention any two contrivances in flowers which favour cross-pollination.
What are the adaptations which are required in self-pollinated plants?
Very short answer type question:
What is hydrophily?
Give an account of various abiotic agencies used in pollination along with their adaptations for pollination.
Both chasmogamous and cleistogamous flowers are present in ______.
Which of the following pair has haploid structures?
Both chasmogamous and cleistogamous flowers are present in ______.
Plants with ovaries having only one or a few ovules are generally pollinated by ______.
Heterostyly as a contrivance for cross-pollination is found in ______.
Which of the following plant contain unisexual flower?
Pollination refers to the ______.
In which one of the following pollination is autogamous?
Name the following:
One plant each of Hypohydrophily and epihydrophily.
Identify the set of correct statements:
- The flowers of Vallisneria are colourful and produce nectar.
- The flowers of waterlily are not pollinated by water.
- In most of water-pollinated species, the pollen grains are protected from wetting.
- Pollen grains of some hydrophytes are long and ribbon like.
- In some hydrophytes, the pollen grains are carried passively inside water.
Choose the correct answer from the options given below:
