EVERYDAY SCIENCE

SCIENCE

CELL BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
All higher plants and animals, including man, were a single cell in their earliest life history.This cell.the gygote undergoes repeated divisions to produce all the body cells of the organism which are identical to start with. This process of division is called.
A
Amitosis
B
Cytokmesis
C
Meiosis
D
Mitosis
Explanation: 

Detailed explanation-1: -All organisms including ourselves, start life as a single cell called zygote.

Detailed explanation-2: -The zygote which is formed after fertilisation is a single cell which divides mitotically to produce multiple cells (blastomeres). The mitotic divisions of the zygote are called as cleavage.

Detailed explanation-3: -There are two types of cell division: mitosis and meiosis. Most of the time when people refer to “cell division, ” they mean mitosis, the process of making new body cells. Meiosis is the type of cell division that creates egg and sperm cells. Mitosis is a fundamental process for life.

Detailed explanation-4: -Cell division plays an important role in all living organisms, as it is essential for growth, repair and reproduction. This process helps in: Renewing of damaged cells. Production of new cells from older ones.

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