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प्रश्न
Autogamy can occur in a chasmogamous flower if ______.
पर्याय
Pollen matures before maturity of ovule
Ovules mature before maturity of pollen
Both pollen and ovules mature simultaneously
Both anther and stigma are of equal lengths.
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उत्तर
Autogamy can occur in a chasmogamous flower if both pollen and ovules mature simultaneously.
Explanation:
Autogamy in chasmogamous flowers occurs when pollen and ovules mature at the same time, allowing pollen to fertilize ovules within the same flower. Without simultaneous maturity, self-pollination is unlikely in open flowers like chasmogamous ones.
APPEARS IN
संबंधित प्रश्न
Explain the post-pollination events leading to seed production in angiosperms.
Can cross-pollination occur in cleistogamous flowers? Give reasons for your answer.
Why does self-pollination not lead to seed formation in self-incompatible species?
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 ______.
Find the odd-one out, giving reason:
Ovary, style, pollen grain, stigma
Differentiate between the following:
Self pollination and cross pollination.
Define the term Pollinating.
Fill in the blanks with suitable words.
_______ is a water-pollinated flower.
Give one word/term for the following:
When stigma and anthers do not grow up to the same height, which favors only cross-pollination.
In bisexual flowers, maturation of gynoecium before androecium is known as ______.
Give four adaptations shown by flowers pollinated by wind.
- Nucellus
- Antipodals
- Synergids
- Micropyle
What are the adaptations which are required in cross-pollinated
Very short answer type question:
What is hydrophily?
Choose the correct statement from the following.
Cleistogamous flowers are ______.
Both chasmogamous and cleistogamous flowers are present in ______.
Pollination by water occurs in ______.
Which of the following is not a water pollinated plant?
Heterostyly as a contrivance for cross-pollination is found in ______.
Pollination refers to the ______.
Choose the correct statement from the following:
Describe any three adaptations in anemophilous flowers.
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?
Give any four floral adaptations for chiropterophily.
When and why does a plant breeder employ the emasculation technique?
