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प्रश्न
Describe any three adaptations in hydrophilous flowers.
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उत्तर
- Flowers are small and inconspicuous.
- Perianth and other floral parts are unwettable.
- Pollen grains are long and unwettable due to the presence of mucilage.
- Nectar and fragrance are lacking in flowers.
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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?
Write two ways in which pollination may occur in plants.
Name two characteristics of flowers in which pollination occur by wind.
Put a tick mark (✓) against the correct alternative in the following statements
Vegetative propagation is not observed in:
Pollination occurs in ______.
Which of the following pair has haploid structures?
Triple fusion in Capsella bursa pastoris is fusion of male gamete with ______.
Which type of flower has ovary superior?
Match the Column I with Column II.
| Column I | Column II |
| A. Pea | (i) Xenogamy |
| B. Jawar | (ii) Epihydrophily |
| C. Maize | (iii) Anemophily |
| D. Vallis | (iv) Bisexual |
| E. Cannabis | (v) Geitonogamy |
Give any four floral adaptations for chiropterophily.
