Topics:
Animal Physiology, Animal Refresher
Match: Cell Organelles and Cell Division Phases
Match the column:
| TABLE-I | TABLE-II |
|---|---|
| 1) Nucleus | a) Shortest phase of mitosis |
| 2) Ribosome | b) Metakinesis |
| 3) Meiosis | c) Smallest cell organelle |
| 4) Mitosis | d) Largest cell organelle |
| 5) Anaphase | e) Occurs in somatic cells |
| 6) Metaphase | f) Occurs in germ cells |
- 1-d, 2-c, 3-f, 4-e, 5-a, 6-b — Correct Answer
- 1-d, 2-c, 3-e, 4-f, 5-a, 6-b
- 1-d, 2-c, 3-f, 4-e, 5-b, 6-a
- 1-c, 2-d, 3-f, 4-e, 5-a, 6-b
Explanation:
Correct Answer: 1-d, 2-c, 3-f, 4-e, 5-a, 6-b
Explanation of Each Match
- 1-d) Nucleus → Largest cell organelle: The nucleus is the largest membrane-bound organelle in eukaryotic cells. It houses the cell's genetic material (chromosomal DNA) and is the control center of the cell. (Exception: in some texts, the vacuole in plant cells can be larger.)
- 2-c) Ribosome → Smallest cell organelle: Ribosomes are the smallest cell organelles (15–25 nm). They have no membrane and consist of two subunits (large and small) made of rRNA and proteins.
- 3-f) Meiosis → Occurs in germ cells: Meiosis is the type of cell division that occurs in germ cells (gonads — testes and ovaries) to produce gametes (sperm and eggs) with half the chromosome number.
- 4-e) Mitosis → Occurs in somatic cells: Mitosis is the cell division that occurs in somatic (body) cells for growth, repair, and reproduction of organisms. It maintains the chromosome number (2n → 2n).
- 5-a) Anaphase → Shortest phase of mitosis: Anaphase is the shortest phase of mitosis. It is the stage where sister chromatids are pulled to opposite poles of the cell by spindle fibers.
- 6-b) Metaphase → Metakinesis: Metaphase is also called Metakinesis — the phase during which chromosomes align at the cell's equatorial plate (metaphase plate), making them most visible and ideal for karyotyping.
