Question

Which of the following cellular structures disappears during mitosis and meiosis?
A. Plastid and nuclear membrane
B. Nucleolus and nuclear membrane
C. Endoplasmic reticulum and mitochondria
D. Endoplasmic reticulum and plasma membrane

Answer 1

Hint:
Before learning the solution, let's go over what mitosis and meiosis seem to be.
Mitosis creates the non-sex cells required for growth and progress, whereas meiosis creates the sex cells or gametes. Meiosis comprises two steps, whereas mitosis only has one. Genetic diversity can only be formed across cell division. Cell division is a critical step in which a unicellular creature transforms into a new organism in unicellular organisms.

Complete step by step answer:
The nuclear membrane and nucleolus always vanish during mitosis and meiosis. Most of the nucleus' contents are released into the cytoplasm at the start of mitosis as the chromosomes condense, the nucleolus vanishes, and the nuclear envelope dissolves.
The procedure is switched around at the end of mitosis. The nucleolus and nuclear membrane vanish during the diagnosis stage of prophase I of meiosis I, and the chromosomes are released into the cytoplasm. Without mitosis, life could not exist.
According to cell theory, all living things are composed of cells, and all cells are descended from other cells. Mitosis has the benefit of facilitating simple cell replication and sister chromosome creation. Due to a lack of genetic diversity during mitosis, each group is more likely to get the same diseases or disorders.
Therefore, during mitosis and meiosis, the nuclear membrane and nucleolus cellular structures vanish.

Option ‘B’ is correct

Note:
The procedure's functions include creating sex cells and fixing genetic flaws in germ line cells. Asexual and sexual organisms both go through the mitosis process. Mitosis has the benefit of facilitating simple cell replication and sister chromosome creation. Due to a lack of genetic diversity during mitosis, each group is more likely to get the same diseases or disorders.