NEET PG DENTAL EXAM

EMBRYOLOGY

CHROMOSOMES AND CELL DIVISIONS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Cells of multicellular organisms undergo mitosis for all of the following EXCEPT
A
growth
B
repair of damaged cells
C
replacement of dying cells.
D
sexual reproduction
Explanation: 

Detailed explanation-1: -In all complex multicellular organisms (eukaryotes), cell duplication occurs by a process called “mitosis” or cell division.

Detailed explanation-2: -Mitosis is a phase of the cell cycle in which a cell’s nucleus is divided into two nuclei, each with an equal quantity of genetic material. It is an asexual reproductive process that occurs in unicellular organisms. Thus, mitosis is a type of cell division that occurs during the asexual reproduction process.

Detailed explanation-3: -Multicellular organisms also reproduce asexually and sexually; asexual, or vegetative, reproduction can take a great variety of forms. Many multicellular lower plants give off asexual spores, either aerial or motile and aquatic (zoospores), which may be uninucleate or multinucleate.

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