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प्रश्न
What are chasmogamous flowers?
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उत्तर
There are two types of flowers present in plants, namely Oxalis and Viola.
Both chasmogamous and cleistogamous flowers are present in plants. Chasmogamous flowers have exposed anthers and stigmata, similar to the flowers of other species.
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संबंधित प्रश्न
Can cross-pollination occur in cleistogamous flowers? Give reasons for your answer.
Enlist advantages and disadvantages of cross pollination
When maturation time of reproductive parts in a flower is different.
In bisexual flowers, maturation of gynoecium before androecium is known as ______.
Answer the following question.
Write the difference in the characteristics of the progeny produced as a result of the two processes.
Can a plant flowering in Mumbai be pollinated by pollen grains of the same species growing in New Delhi? Provide explanations to your answer.
Coelacanth was caught in South Africa. State the significance of the discovery of Coelacanth in the evolutionary history of vertebrates.
What is a flower? Draw a typical flower and label its different parts.
At which stage pollen grains are shed from the anther in Angiosperms?
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
A dioecious flowering plant prevents both ______.
Chief pollinators of agricultural crops are ______.
Both chasmogamous and cleistogamous flowers are present in ______.
Plants with ovaries having only one or a few ovules are generally pollinated by ______.
In some plants anther and stigma mature at the same time this condition is called ______.
A botanist studying Viola (common pansy) noticed that one of the two flower types withered and developed no further due to some unfavorable condition, but the other flower type on the same plant survived and it resulted in an assured seed set. Which of the following will be correct?
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 ______
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
Which of the following floral adapation are adapted by hydrophilous flowers?
Describe any three adaptations in hydrophilous flowers.
Give any four floral adaptations for chiropterophily.
When and why does a plant breeder employ the emasculation technique?
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:
Bird pollinated flowers are usually ______.
