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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
Complete the following chart and rewrite.
| Sr.No. | Agencies | type of pollination |
| 1 | Water | .................... |
| 2 | ........................... | Entomophily |
| 3 | Bat | .................... |
| 4 | ....................... | Ornithophily |
(Or)
Explain outbreeding devices in angiospermic plants.
- Nucellus
- Antipodals
- Synergids
- Micropyle
Describe pollination. How many types of pollinations are found?
Mention various adaptations for wind pollination.
What are the different adaptations shown by bird-pollinated flowers?
For which of the following attractants and rewards are required?
Wind pollination is common in ______.
Pollination refers to the ______.
Which of the following floral adapation are adapted by hydrophilous flowers?
Describe any three adaptations in hydrophilous flowers.
