Study the given activity and answer the following questions.
Gaurav removed all stamens from one flower and covered it with a polythene bag. After a week, he found that the flower had not changed into fruit, but the other flowers had changed into fruits.
Questions:
1. Which process did not occur in the flower that was inside the polythene bag?
2. What other processes were stopped because of this?
3. Why did the ovary of the flower not change into fruit?
Answer (2)
Gaurav's flower did not undergo pollination, which is essential for fertilization and subsequent fruit development. Without fertilization, the ovary could not transform into fruit. This explains why the flower inside the polythene bag remained unchanged compared to the others.
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Gaurav's activity involved altering a flower to observe the process of fruit formation. Here are the details to answer the questions:
Which process did not occur in the flower that was inside the polythene bag?
The process that did not occur in the flower inside the polythene bag was pollination . Pollination is the transfer of pollen grains from the male part (anther) of the flower to the female part (stigma) of a flower.
What other processes were stopped because of this?
Since pollination did not occur, the subsequent processes that rely on it were also stopped:
Fertilization: This is the fusion of male and female gametes, which normally happens after pollination if pollen successfully reaches the ovule.
Fruit development: Without fertilization, the ovary of the flower can't develop into fruit.
Why did the ovary of the flower not change into fruit?
The ovary did not change into a fruit because fertilization did not occur. After pollination, if the pollen successfully travels to the ovary, it can fertilize an ovule, leading to the development of seeds and the transformation of the ovary into a fruit. In this case, since the stamens were removed and the flower was covered, it was isolated from pollen, preventing fertilization and thereby halting fruit development.
