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प्रश्न
State significance of pollination.
What is the significance of pollination?
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उत्तर
Significance of pollination:
- Pollination is a significant event because it precedes fertilization.
- It brings the two types of gametes closer for the process of fertilization.
- Also, cross-pollination introduces variations in the plants due to the mixing of different genes which increases adaptability towards the environment or surroundings.
- Fertilization thereby results in the formation of fruits and seeds. Without pollination, there wouldn't be any fruit and seed formation.
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संबंधित प्रश्न
Mature ovary forms the ______.
Give some examples of different modes of fertilisation in nature?
What is meant by 'unisexual flowers' and 'bisexual flowers'? Give two examples of each.
The correct sequence of reproductive stages occurring in flowering plants is ______
Fill in the blank by selecting suitable word:
A flower bearing only male or female parts is known as __________ flower.
The students of a class were asked by the teacher to study the different parts of an embryo of an angiosperm. Given below are the essential steps for the experiment :
A. Soak the seeds in plain water and keep them overnight.
B. Cut open the soaked seed and observe its different parts.
C. Take some healthy seeds in a petri-dish.
D. Drain the excess water, cover the seeds with a wet cotton cloth and leave them as it is for a day.
The correct sequence of these steps is
(a) C, A, D, B
(b) C, D, A, B
(c) A, C, D, B
(d) A, C, B, D
Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
Pollen grain, male gamete, female gamete, ovary.
Sketch the labeled diagram:
Flower with its sexual reproductive organs
Draw a neat and labelled diagram.
Double fertilization in angiosperms
The seed that contains the future plant is called the ______
