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प्रश्न
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by ______.
विकल्प
Wind
Bat
Bee
Water
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उत्तर
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by wind.
Explanation:
Wind-pollinated flowers frequently have a single ovule in the ovary and are packed in an inflorescence. Pollen, which is lightweight and easily transported to other flowers by the wind, is usually produced in great quantities by these flowers. The crowded arrangement of an inflorescence increases the likelihood of successful wind pollination, and the single ovule guarantees that just one seed will grow following pollination. Grass and certain trees, such as pines, are examples of such plants.
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संबंधित प्रश्न
A flower of tomato plant following the process of sexual reproduction produces 200 viable seeds.
Answer the following questions giving reasons :
(a) What would have been the minimum number of ovules present in pre-pollinated pistil ?
(b) How many microscope mother cells would minimally be required to produce requisite number of pollen grains ?
(c) How many pollen grains must have minimally pollinated the carple ?
(d) How many male gametes would have used to produce these 200 viable seeds ?
(e) How many megaspore mother cells were required in this process ?
Make a list of any three outbreeding devices that flowering plants have developed and explain how they help to encourage cross-pollination.
Enlist advantages and disadvantages of cross pollination
Answer the following question.
Write the difference in the characteristics of the progeny produced as a result of the two processes.
Wind pollination is common in ______.
Pollination occurs in ______.
In the dioecious aquatic plant shown, identify the characteristics of the male flowers that reach the female flowers for pollination:
| Size of the flower | Colour of flower | The characteristic feature of pollen grain | |
| A | small | brightly coloured | Lightweight and non-sticky |
| B | large | colourless | large and sticky |
| C | small | white | small, covered with mucilage |
| D | large | colourless | non-sticky |
Describe any three adaptations in anemophilous flowers.
Describe any three adaptations in hydrophilous flowers.
Mention any one example of the hydrophilous flower.
