Question

Cell division is a type of reproduction in
A. Unicellular organisms
B. Multicellular organisms
C. Both A and B
D. None of these

Answer 1

Cell division is a critical step in the reproduction and development process. Every living thing starts off as a single cell. A fertilised egg, also known as a zygote, is a single-celled organism. It divides many times in order to produce a high number of cells.
During cell division, a parent cell divides into two or more daughter cells. Cell division is a common part of a long cell cycle. Types of cell division- mitosis and meiosis.

Complete answer:
Option A: A parent cell divides into two or more daughter cells in the process of cell division. Cell division is a type of reproduction in unicellular organisms that results in the development of daughter cells when the unicellular organism divides.
So option A is correct.
Option B: Sexual reproduction accounts for the majority of multicellular creatures' reproduction. Many multicellular species, on the other hand, can reproduce asexually. A single parent generates children in asexual reproduction. Budding is an asexual reproductive method.
So option B is not correct.
Option C: The majority of multicellular animals reproduce through sexual reproduction. Asexual reproduction is possible in many multicellular animals. In asexual reproduction, a single parent produces children. Budding is a form of asexual reproduction.
So option C is not correct.
Option D: Organisms with only one cell are known as unicellular organisms. The division of the parent cell into two or more daughter cells is required for their reproduction. The nucleus of each daughter cell divides from the nucleus of the parents' cell. Individually, the daughter cells form a unicellular creature. They become the parent cell, which then divides to make more offspring.
So option D is not correct.

So option A is the correct answer.

Note:
In both unicellular and multicellular organisms, cell division is used to reproduce cells. Binary fission, a kind of mitotic division, is used in unicellular organisms for reproduction. Cell division aids in the creation of gametes, which unite to form organisms in multicellular creatures. Cell division is also involved in an organism's growth and development, as well as the healing of injuries.