Chapter No 5 Cell Cycle best solved MCQs

 21. The chromosomes are attached in the equator of spindle in:

(a) Prophase

(c) Anaphase

(b) Telophase

(d) Metaphase✅

22. Chromatids get separated from each other during:

(a) Telophase

(b) Prophase

(c) Anaphase✅

(d) Metaphase

23. Chromatids are condensed during:

(a) Anaphase

(b) Telophase

(c) Prophase✅

(d) Metaphase

24. Uncoiling of chromosomes take place during:

(a) Prophase

(b) Telophase✅

(c) Anaphase

(d) Metaphase

25. The division of nucleus is:

(a) Mitosis

(b) Karyokinesis✅

(c) Cytokinesis

(d) Meiosis

26. Chromosomes are not visible during:

(a) Prophase

(b) Interphase✅

(c) Anaphase

(d) Metaphase

27. The condensation of chromosomes is completed during:

(a) Telophase

(b) Prophase✅

(c) Anaphase

(d) Metaphase

28. Cytokinesis in animals take place by:

(a) Furrow✅

(b) Phragmoplast

(c) Telophase

(d) None of the above

29. Which of the following structure is absent in animals?

(a) spindle

(b) centrioles

(c) Chromatids

(d) Phragmoplast✅

30. Cells of which of the followings are called cancer cells?

(a) Malignant tumor✅

(b)Benign tumor

(c) both a and b

(d) None of the above

31. Which of the followings stage is similar in mitosis and meiosis ?

(a) Prophase

(b) Anaphase

(c) Metaphase

(d) Telophase✅

32. The exchange of part of chromatids is:

(a) Chiasmata

(b) Linkage

(c) crossing over✅

(d) None of the above

33. The cell death due to tissue damage is:

(a) Apoptosis

(b) Necrosis✅

(c) Metastasis

(d) Synapsis

34. Necrosis is:

(a) Division of cells

(b) Suicide of cells

(c) Cell death by tissue damage✅

(d) Weakness of cells

35. Meiosis discovered in:

(a) 1876✅

(b) 1879

(c) 1960

(d) 1850

36. Hydra reproduces asexually by:

(a) Cutting

(b) Grafting

(c) Budding✅

(d) Binary fission

37. In which phase,21. The chromosomes are attached in the equator of spindle in:

(a) Prophase

(c) Anaphase

(b) Telophase

(d) Metaphase✅

22. Chromatids get separated from each other during:

(a) Telophase

(b) Prophase

(c) Anaphase✅

(d) Metaphase

23. Chromatids are condensed during:

(a) Anaphase

(b) Telophase

(c) Prophase✅

(d) Metaphase

24. Uncoiling of chromosomes take place during:

(a) Prophase

(b) Telophase✅

(c) Anaphase

(d) Metaphase

25. The division of nucleus is:

(a) Mitosis

(b) Karyokinesis✅

(c) Cytokinesis

(d) Meiosis

26. Chromosomes are not visible during:

(a) Prophase

(b) Interphase✅

(c) Anaphase

(d) Metaphase

27. The condensation of chromosomes is completed during:

(a) Telophase

(b) Prophase✅

(c) Anaphase

(d) Metaphase

28. Cytokinesis in animals take place by:

(a) Furrow✅

(b) Phragmoplast

(c) Telophase

(d) None of the above

29. Which of the following structure is absent in animals?

(a) spindle

(b) centrioles

(c) Chromatids

(d) Phragmoplast✅

30. Cells of which of the followings are called cancer cells?

(a) Malignant tumor✅

(b)Benign tumor

(c) both a and b

(d) None of the above

31. Which of the followings stage is similar in mitosis and meiosis ?

(a) Prophase

(b) Anaphase

(c) Metaphase

(d) Telophase✅

32. The exchange of part of chromatids is:

(a) Chiasmata

(b) Linkage

(c) crossing over✅

(d) None of the above

33. The cell death due to tissue damage is:

(a) Apoptosis

(b) Necrosis✅

(c) Metastasis

(d) Synapsis

34. Necrosis is:

(a) Division of cells

(b) Suicide of cells

(c) Cell death by tissue damage✅

(d) Weakness of cells

35. Meiosis discovered in:

(a) 1876✅

(b) 1879

(c) 1960

(d) 1850

36. Hydra reproduces asexually by:

(a) Cutting

(b) Grafting

(c) Budding✅

(d) Binary fission

37. In which phase, cell increases the number of its many organelles and grows in size:

(a) G1✅

(b) S phase

(c) G2

(d) G0 cell increases the number of its many organelles and grows in size:

(a) G1✅

(b) S phase

(c) G2

(d) G0

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Chapter No.5 Cell Cycle solved MCQs

 1. In which stage of the cell cycle each chromosome is duplicated and so it consists of two chromatids?

(a) G1

(b) S✅

(c) M

(d) G2

2. During which phase of mitosis spindles are formed?

(a) G2

(b) Interphase

(c) Prophase✅

(d) Metaphase

3. In which stage of the cell cycle, the cell is preparing enzyme for chromosome replication?

(a) Gl✅

(b) G2

(c) S

(d) M

4. Which of the following stage of cell division is very different for animal and plant cells?

(a) Telophase

(b) Metaphase

(c) Anaphase

(d) Cytokinesis✅

5. Prior to cell division, each chromosome replicates or duplicates its genetic material, the products are connected by a centromere and are called;

(a) Sister chromosomes

(b) Homologous chromosomes

(c) Non-sister chromatids

(d) Sister chromatids✅

6. The process of mitosis ensures that:

(a) Each new cell is genetically different from its parent.

(b) Each new cell receives the proper number of chromosomes.✅

(c) Cells will divide at the appropriate time

(d) Chromosomes replicate without errors

7. Cytokinesis in a plant cell is characterized by;

(a) The equal division of homologous chromosomes.

(b) A pinching off of the cell membrane to divide the cell.

(c) The formation of a cell plate in the cytoplasm✅

(d) The movement of the chromosomes from the metaphase plate.

8. Which of the following is unique to mitosis and not a part of meiosis?

(a) Homologous chromosomes pair forming bivalents.

(b) Homologous chromosomes cross over.

(c) Chromosome pairs are broken during anaphase

(d) Chromatids anaphase separate during✅

9. Which event distinguishes meiosis from mitosis?

(a) Condensation of chromosomes

(b) Loss of the nuclear membrane

(c) Formation of metaphase plate.

(d) Pairing of homologous chromosomes.✅

10. In which stage of the cell cycle most cells spend their lives?

(a) Prophase

(b) Metaphase

(c) Interphase✅

(d) Telophase

11. Which of the following distinguishes meiosis from mitosis?

(a) The reduced. chromosome number is

(b)Chromosomes undergo crossing over.

(c) Daughter cells are genetically different from the parent cell.

(d) All of the above.✅

12. For mitosis, the chromosomes of the cells is duplicated during interphase. When do the chromosomes duplicated for meiosis?

(a) Before meiosis I✅

(b) Before meiosis II

(c) During Meiosis-1

(d) don't duplicate

13. Find the correct statement.

(a) Homologous chromosomes form pairs during mitosis.

(b) Chromosomes do not duplicate in the interphase preceding meiosis-I.

(c) Homologous chromosomes form pairs during meiosis but not mitosis.✅

(d) Spindles are not required during meiosis

14. What reason would you suggest for the fact that the total DNA content of each daughter cell is reduced during meiosis?

(a) Chromosomes do not replicate during the interphase before meiosis I.

(b) Chromosomes do not duplicate between meiosis I and II.✅

(c) Half of the chromosomes from each gamete are broken.

(d) Sister chromatids separate during anaphase of meiosis I.

16. Specific enzymes are synthesized by:

(a) G0

(b) G2

(c) S phase

(d) G1✅

17. The phase which can exist for life is:

(a) G0✅

(b) G2

(c) S phase

(d) G1

18. Chromosomes become double during:

(a) G2

(b) G0

(c) G1

(d) S phase✅

19. The longest phase is:

(a) Mitotic phase

(b) Meiosis

(c) Cell cycle

(d) Interphase✅

20. Type of spindle fibre which attaches the chromosomes is called:

(a) Kinetochore✅

(b) Non kinetochore

(c)Both a and b

(d) Centromere

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