Asexual reproduction is not widespread in animals as it is in plants.
Explanation:
Animals are mostly undergoing sexual reproduction to get diverse genetic combinations that is essential for survival. It is also necessary for the population to adapt to the changes in their surroundings.
If it was asexual mode of reproduction, then the offspring needs to depend on mutations of the chromosomes to get the genetic diversity. But it is known that for mutation to happen it takes a long time or it does not happen often.
Hence, animals with asexaul mode are found to be at disadvantage that those with sexual mode of reproduction.
Asexual modes of reproduction is widespread in plants.
Answer is A Firstly axon must reach the threshold level and then depolarisation occurs. Depolarisation phrase means sodium enters and potassium leaves the axon . Choice C can't be because main idea is the entering of sodium ions.
