A: | Mitosis does play a role in gamete formation. |
R: | Haploid organisms divide by mitosis. |
1. | Both Assertion & Reason are true and the Reason is the correct explanation of the Assertion. |
2. | Both Assertion & Reason are true but the Reason is not the correct explanation of the Assertion |
3. | Assertion is a true statement but Reason is false. |
4. | Both Assertion and Reason are false statements. |
Read the four statements (a-d) and choose the correct option.
a. | Spindle fibers attach to kinetochores of chromosomes during metaphase. |
b. | Cell growth results in disturbing the ratio between the nucleus and the cytoplasm. |
c. | Pachytene stage is relatively short-lived compared to the leptotene. |
d. | Interkinesis is a short-lived stage characterized by duplication of DNA. |
1 a, b & c are correct
2 Only c is incorrect
3 b & d are correct
4 a & b are correct
Consider the following four statements (I- IV) related to cell cycle, and select the correct option stating them as true (T) and false (F)
I. | Cell growth in terms of cytoplasmic increase is a continuous process. |
II. | Interphase is the phase of actual cell division. |
III. | The number of chromosomes doubles in S-phase. |
IV. | The cell that do not divide further exits G1-phase to enter a metabolically inactive stage. |
I | II | III | IV | |
1. | T | F | F | F |
2. | F | T | T | T |
3. | F | F | T | T |
4. | T | F | F | T |
Statement I: | In mitosis, chromosomal number in the progeny as well as in parents remains the same |
Statement II: | Mitosis takes place in gametes |
1. | Both statement I and statement II are correct |
2. | Both statement I and statement II are incorrect |
3. | Statement I is correct but statement II is incorrect |
4. | Statement I is incorrect but statement II is correct |