NCERT Biology Textbook Solutions for Class XII

NCERT Biology Textbook Solutions for Class XII

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Chapter 1 Reproduction in Organisms
Biology
Question 4 Offspring formed due to sexual reproduction have better chances of survival. Why Is this statement always true Answer Sexual reproduction involves the fusion of the male and the female gamete. This fusion allows the formation of new variants by the combination of the DNA from two usually different members of the species. The variations allow the individuals to adapt under varied environmental conditions for better chances of survival. However, it is not always necessary that the offspring produced due to sexual reproduction has better chances of survival. Under some circumstances, asexual reproduction is more advantageous for certain organisms. For example, some individuals who do not move from one place to another and are well settled in their environment. Also, asexual reproduction is a fast and a quick mode of reproduction which does not consume much time and energy as compared to sexual reproduction.
Question 5 How does the progeny formed from asexual reproduction differ from those formed by sexual reproduction Answer Progeny
formed
from
asexual
reproduction
the fusion of the male and the female gamete. Organisms kind
of
offspring s
formed
from
sexual
reproduction
Asexual reproduction does not involve