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प्रश्न
What are the different adaptations shown by bird-pollinated flowers?
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उत्तर
Ornithophilous plants shows the following adaptations:
- Flowers are usually brightly coloured, large, and showy.
- They secrete profuse, dilute nectar.
- Pollen grains are sticky and spiny.
- Flowers are generally without fragrance, as birds have a poor sense of smell.
संबंधित प्रश्न
With the help of a suitable example, explain protandry.
Enlist advantages and disadvantages of cross pollination
When maturation time of reproductive parts in a flower is different.
Give one word/term for the following:
When stigma and anthers do not grow up to the same height, which favors only cross-pollination.
Very short answer type question:
What is hydrophily?
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
The flower which possesses both androecium and gynoecium is called perfect or ______.
Mention any one example of the anemophilous flower.
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:
