Question

Repeated reproduction of Paramecia by binary fission leads to _______.
A.Senile decay
B.Fatigue
C.Sterility
D.Mortality

Answer 1

Reproduction is the process through which one organism produces their offspring to maintain their number on Earth. The reproduction of organisms takes place either sexually or asexually depending on the organisms.

Complete answer:
We should know about reproduction as reproduction is the life process of organisms that helps them to grow the population. The reproduction ensures the continuity of organism generation to generation. The reproduction is of two types; asexual reproduction and sexual reproduction. Asexual reproduction is a process of reproducing the offspring through simple division of cells, this type of reproduction is observed in single cell organisms, it does not undergo fusion of gametes therefore, and the offspring produced by asexual reproduction are genetically identical. The asexual reproduction is further divided into; binary fission, budding, fragmentation, and sporogenesis.
Now, the binary fission is an asexual reproduction observed in amoeba. After the replication process through mitotic division, the amoeba cell divides into two equal halves and is considered as the daughter cells. In this process, the daughters cells thus produce through cell division are identical to each other. The amoebas that are about to divide grow eventually larger the nucleus gets extended and divide into two. The nuclear division is followed by the cytoplasmic division. Therefore, two amoebas are produced from a single amoeba.
If the Paramecium undergoes repeated binary fission, the genetic balance gets disturbed and this leads to the imbalance in the vitality and vigour of the clone and also reduces the rate of binary fission. Therefore, repeated reproduction of Paramecia by binary fission leads to senile decay.

Hence, the correct answer is option(A)

Note: The mitosis process and binary fission are two different processes. The mitosis is the cell division process that is takes place in all eukaryotes while the binary fission is an asexual reproduction process that takes place in prokaryotes and some of the eukaryotes.