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प्रश्न
Why angiosperm anthers are called dithecous?
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उत्तर
Typical angiosperm anther is broad, terminal and bilobed. Each lobe of the anther has two pollen sacs which fuse (at maturity) to form a single chamber called the thecus, so it is called dithecous.
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संबंधित प्रश्न
As a senior biology student you have been asked to demonstrate to the students of secondary level in your school, the procedure(s) that shall ensure cross-pollination in a hermaphrodite flower. List the different steps that you would suggest and provide reasons for each one of them.
Explain the post-pollination events leading to seed production in angiosperms.
Mention two strategies that evolved to prevent self-pollination in flowers.
Give one word/term for the following:
When stigma and anthers do not grow up to the same height, which favors only cross-pollination.
Differentiate Between Cross Pollination and Self Pollination:
Pollination refers to the ______.
Which type of pollination does the figure indicate?
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 ______
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:
