Answer:
C. 42
Explanation:
A sperm cell is a sex cell which is a haploid cell and thus has half the chromosomes of a somatic cell which is a diploid cell.
The correct sequence is option (c)
All the living organisms in the world responds to the environmental conditions and that condition could be temperature, pressure, etc. The changes in the environmental conditions are first observed by the cells of the body and then by the tissues and then from tissues it gets transferred to the organ then to organ system and finally the organism responds to the change.
