Notes of Biology

1706 Words Mar 4th, 2011 7 Pages
Q1:Why is reproduction essential for organisms?
Reproduction is a fundamental feature of all living organisms. It is a biological process through which living organisms produce offspring’s similar to them. Reproduction ensures the continuance of various species on the Earth. In the absence of reproduction, the species will not be able to exist for a long time and may soon get extinct.

Q2:Which is a better mode of reproduction sexual or asexual? Why?
Sexual reproduction is a better mode of reproduction. It allows the formation of new variants by the combination of the DNA from two different individuals, typically one of each sex. It involves the fusion of the male and the female gamete to produce variants, which are not identical to their
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|It requires only one individual. |
|3. |The individuals produced are not identical to their parents and|The individuals produced are identical to the parent and are|
| |show variations from each other and also, from their parents. |hence, called clones. |
|4. |Most animals reproduce sexually. Both sexual and asexual modes |Asexual modes of reproduction are common in organisms having|
| |of reproduction are found in plants. |simple organizations such as algae and fungi. |
|5. |It is a slow process. |It is a fast process. |

Vegetative propagation is a process in which new plants are obtained without the production of seeds or spores. It involves the propagation of plants through certain vegetative parts such as the rhizome, sucker, tuber, bulb, etc. It does not involve the fusion of the male and the female gamete and requires only one parent. Hence, vegetative reproduction is considered as a type of asexual reproduction.
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Q7:What is vegetative propagation? Give two suitable examples.
Vegetative propagation is a mode of asexual reproduction in which new plants are obtained from the vegetative parts of plants. It does not involve the production of seeds or spores for the propagation of new plants. Vegetative parts of

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