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प्रश्न
Mention any one example of the hydrophilous flower.
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उत्तर
Vallisneria
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संबंधित प्रश्न
A flower of tomato plant following the process of sexual reproduction produces 240 viable seeds.
Answer the following questions giving reasons :
(a) What is the minimum number of pollen grains that must have been involved in the pollination of its pistil?
(b) What would have been the minimum number of ovules present in the ovary?
(c) How many megaspore mother cells were involved?
(d) What is the minimum number of microspore mother cells involved in the above case?
(e) How many male gametes were involved in this case?
Describe the structure of its microsporangium.
Exine and intine are the parts of
Which of the following pair has haploid structures?
Heterostyly as a contrivance for cross-pollination is found 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 |
Correct definition of pollination is ______
What is ornithophily?
Describe any three adaptations in hydrophilous flowers.
Which of the following agencies of pollination is abiotic in nature?
