Q. No.Prophase of mitosis is not characterized by:
1.
condensation of chromatin
2.
migration of centrosomes to opposite poles
3.
formation of mitotic apparatus
4.
pairing of homologous chromosomes
Onion root tip has 16 chromosomes in each cell. How many chromosomes will the cell respectively have at G1 phase, after S phase and after M phase?
| 1. | 16, 32, 16 | 2. | 16, 32, 8 |
| 3. | 16, 16, 8 | 4. | 16, 16, 16 |
Cells at the end of prophase, when viewed under the microscope, show:
| 1. | Nuclear envelope | 2. | Nucleolus |
| 3. | Mitochondria | 4. | Endoplasmic reticulum |
The cell expected to go through the events of cell cycle in the least amount of time would be:
| 1. Epithelial cell in humans | 2. Neuron in humans |
| 3. Yeast cell | 4. Escherichia coli |
Identify the stage of mitosis shown in the given diagram:
 |
|
The start of the second phase of mitosis, metaphase, is marked by:
| 1. | complete disintegration of the nuclear envelope |
| 2. | alignment of chromosomes at the equatorial plate |
| 3. | de-condensation of chromatin |
| 4. | reappearance of the nucleolus |
Consider the given two statements:
| I: | Morphology of chromosomes is best studied at metaphase |
| II: | At this stage, a chromosome is made up of two sister chromatids, held together at the centromere |
1. Both I and II are True and II explains I
2. Both I and II are True but II does not explain I
3. I is True but II is False
4. I is False but II is True
If a cell had 4[2 pairs] chromosomes at G1 phase, what would be the number of chromosomes in this cell at the end of anaphase?
| 1. | 2 | 2. | 4 |
| 3. | 6 | 4. | 8 |
All the following key events take place during telophase of mitosis except:
| 1. | Chromosomes cluster at the opposite spindle poles |
| 2. | Chromosomes become discrete |
| 3. | Nuclear envelope reforms |
| 4. | Nucleolus, ER and Golgi complex reform |
Identify the incorrect statement regarding cytokinesis:
| 1. | Animal cells divide by cleavage furrow |
| 2. | Cell plate formation takes place during cytokinesis in plant cells |
| 3. | The cell wall formation in plant cells starts near the existing lateral walls and grows inwards |
| 4. | At cytokinesis, mitochondria and plastids are distributed between daughter cells |
© 2025 GoodEd Technologies Pvt. Ltd.