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प्रश्न
Write one main difference between asexual and sexual mode of reproduction. Which species is likely to have comparatively better chances of survival – the one reproducing asexually or the one reproducing sexually? Give reason to justify your answer.
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उत्तर
One major point of difference between asexual and sexual reproduction is that in asexual reproduction, a single parent gives rise to the new progenies, whereas in sexual reproduction, two different individuals are involved as parents. Both the parents produce two different kinds of gametes, which fuse to give rise to a new individual. Thus, in asexual reproduction, there is almost negligible or minimal change in the genome of the offsprings, while in sexual reproduction, all new offsprings have different genomes.
Organisms undergoing sexual reproduction are at advantage and have better chances of survival in comparison to the one undergoing asexual reproduction. This is because sexual reproduction involves fusion of two different types of gametes derived from two different individuals. This results in variation in the genome of progenies, leading to greater genetic diversity and thus better chances to adapt, escape or evolve through the selection pressures of the nature.
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संबंधित प्रश्न
A flower may have either male or female reproductive parts. Such a flower is called ______.
The fusion of male and female gametes is termed as ______.
Name the part of a seed which grows into shoot.
Describe the process of fertilisation in a flower with the help of labelled diagrams.
Fill in the blanks:
A stamen consists of ______ and ________.
State whether the following statement is true (T) or false (F):
Stamens make egg cells.
State whether the following statement is true (T) or false (F):
Flowers which possess stamens and carpel are called unisexual.
In human beings, fertilization occurs in the ______
Type of sexual reproduction is ______.
State the post-fertilisation changes that lead to fruit formation in plants.
