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प्रश्न
Write two ways in which pollination may occur in plants.
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उत्तर
The two ways in which pollination may occur in plants are:
(a) Self-pollination.
(b) Cross-pollination
APPEARS IN
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?
Differentiate between the following:
Self pollination and cross pollination.
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.
State four features of flowers pollinated by insects.
Give four adaptations shown by flowers pollinated by wind.
Put a tick mark (✓) against the correct alternative in the following statements
Pollen is produced in the
Male and female flowers are present on different plants (dioecious) to ensure xenogamy, in ______.
Which of the following plant contain unisexual flower?
A botanist studying Viola (common pansy) noticed that one of the two flower types withered and developed no further due to some unfavorable condition, but the other flower type on the same plant survived and it resulted in an assured seed set. Which of the following will be correct?
Pollination refers to the ______.
