9th Class Biology Chapter 05 MCQs with Answers

Welcome to the 9th Class Biology Chapter 05MCQs Online Test. We are presenting you with top MCQ questions from the 9th Class Biology Chapter CELL CYCLE.

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9th Class Biology Chapter 05 MCQs with Answers

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MCQs Class 9 Biology with Answers

The purpose of these online MCQs tests is to help you evaluate your 9th Class Biology Chapter 05 MCQs. These Multiple Choice Questions (MCQs) will prepare you for your academic success in the 9th Class Exams. 9th Class Biology Chapters include Chapter 01 Introduction to Biology, Chapter 02 Solving a Biological Problem, Chapter 03 Biodiversity, Chapter 04 Cells and Tissues, Chapter 05 Cell Cycle, Chapter 06 Enzymes, Chapter 07 Bioenergetics, Chapter 08 Nutrition and Chapter 09 Transport

What is CELL CYCLE?

A cell cycle is a series of events that takes place in a cell as it grows and divides. A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division. The cell then leaves interphase, undergoes mitosis, and completes its division.

CHAPTER 5 CELL CYCLE

1. The series of events from the time a cell is produced until it completes mitosis and produces new cells:

(a) Cell cycle

(b) Interphase

(c) Karyokinesis

(d) Cytokinesis

2. During interphase

(a) Cell’s metabolic activity takes place

(b) Duplication of chromosomes takes place

(c) Cell is divided in to two daughter cells

(d) Both a and b

3. The major phases of cell cycle are:

(a) 5

(b) 4

(c) 3

(d) 2

4. Interphase is divided into how many phases?

(a) Four

(b) Three

(c) Two

(d) One

5. Which of the following is the longest phase in cell cycle?

(a) Mitotic phase

(b) Inter phase

(c) GO phase

(d) Gl phase

6. During Gl phase:

(a) Cell increases its supply of proteins

(b) Increases its number of organelles

(c) Synthesis of enzymes and duplication of chromosomes

(d) All of these

7. In which stage of cell cycle, the cell is preparing enzymes for chromosomes duplication?

(a) S-phase

(b) G-l phase

(c) G-2 phase

(d) M-phase

8. In which phase cell duplicates its chromosomes?

(a) Gl phase

(b) S phase

(c) G2 phase

(d) GO phase

9. The phase of inter phase in which cell prepares proteins for mitosis:

(a) Gl phase

(b) S phase

(c) G2 phase

(d) GO phase

10. At which stage of cell cycle cell stop dividing?

(a) G 0

(b) G 1

(c) G 2

(d) S

11. The cells that do not enter GO phase and continue to divide through out an organism’s

(a) Neurons

(b) Epithelial cells

(c) Liver cells

(d) kidney cells

12. Mitosis was discovred in:

(a) 1860

(b) 1870

(c) 1880

(d) 1890

13. Who discovered mitosis?

(a) Walther Flemming

(b) Oscar Hertwig

(c) T. H. Morgan

(d) August Weismann

14. Prokaryotic cells undergo a process similar to mitosis called:

(a) Binary fission

(b) Multiple fission

(c) Regeneration

(d) Meiosis

15. The division of cytoplasm:

(a) Karyokinesis

(b) Cytokinesis

(c) Prophase

(d) Metaphase

16. The division of nucleus is called:

(a) Karyokinesis

(b) Cytokinesis

(c) Prophase

(d) Metaphase

17. Mitosis consist of phases:

(a) One

(b) Two

(c) Three

(d) Four

18. During mitosis one cell divides into daughter cells:

(a) 2

(b) 3

(c) 4

(d) 5

19. Which of the following is the longest phase of karyokinesis?

(a) Prophase

(b) Metaphase

(c) Anaphase

(d) Telophase

20. Complete set of spindle fibres is known as:

(a) Chromatin

(b) Kinetochore

(c) Mitotic spindle

(d) Cleavage

21. Spindle fibers are formed during:

(a) Prophase

(b) Metaphase

(c) Anaphase

(d) Telophase

22. The chromosomes arrange themselves along the equator of the cell in phase:

(a) Prophase

(b) Metaphase

(c) Anaphase

(d) Telophase

23. Which phase is a reversal of prophase?

(a) Interphase

(b) Metaphase

(c) Anaphase

(d) Telophase

24. In animal cells, cytokinesis occurs by a process called:

(a) Regeneration

(b) Cleavage

(c) Binary fission

(d) Both (a)and(b)

25. New red blood cells are formed by:

(a) Mitosis

(b) Meiosis

(c) Multiple fission

(d) Both

26. Which animal shows regeneration?

(a) Amoeba

(b) Paramecium

(c) Sea star

(d) Hydra

27. Budding takes place in:

(a) Amoeba

(b) Paramecium

(c) Sea star

(d) Hydra

28. Asexual reproduction in hydra is takes place by:

(a) Mitosis

(b) Budding

(c) Cutting

(d) Spore

29. Tumors are produced as a result of errors in:

(a) Meiosis

(b) Mitosis

(c) Binary fission

(d) Multiple fission

30. Errors in the control of mitosis may cause:

(a) Cancer

(b) Ulcer

(c) Constipation

(d) Cough

31. The tumors which remain at their production site are called:

(a) Benign

(b) Malignant

(c) Metastasis

(d) All of these

32. The phenomenon of spreading cancer:

(a) Infection

(b) Regeneration

(c) Metastasis

(d) All of these

33. The word meiosis comes from:

(a) Latin word

(b) Italian word

(c) Greek word

(d) French word

34. Who discovered meiosis?

(a) Walter Flemming

(b) Oscar Hertwig

(c) August Weismann

(d) T. H. Morgan

35. Meiosis takes place in:

(a) Eukaryotic cells

(b) Prokaryotic cells

(c) Haploid cells

(d) All of these

36. Those cell which give rise to gametes are called:

(a) Somatic cells

(b) Spindle Fibers

(c) Germs line cells

(d) All of these

37. Meiosis was discovered in:

(a) 1875

(b) 1876

(c) 1877

(d) 1878

38. In meiosis, one diploid cell divides into how many haploid cells?

(a) 2

(b) 4

(c) 6

(d) 8

39. The longest phase in meiosis is:

(a) Prophase I

(b) Metaphase I

(c) Anaphase I

(d) Telophase I

40. In which phase chromosomes form a meta phase plate?

(a) Prophase

(b) Metaphase

(c) Anaphase

(d) Telophase

41. In which phase of meiosisl the pairs of homologous chromosomes align along equatorial plane forming the metaphase plate?

(a) Prophase I

(b) Metaphase I

(c) Anaphase I

(d) Telophase 1

42. The process in which homologous chromosomes line up with each other and form pairs:

(a) Tetrad

(b) Crossing over

(c) Chiasmata

(d) Synapsis

43. Who discovered crossing over?

(a) Walter Flemming

(b) Oscar Hertwig

(c) August Weismann

(d) T. H. Morgan

44. The phase in which crossing over occurs:

(a) Anaphase

(b) Metaphase

(c) Prophase 11

(d) Prophase I

45. The two non-sister chromatids of homologous chromosomes join each other at:

(a) Centromere

(b) Kinetochore over

(c) Chiasmata

(d) All of these

46. Thomas Hunt Morgan observed crossing over in Drosophila melanogaster in:

(a) 1905

(b) 1907

(c) 1909

(d) 1911

47. August Weismann described the significance of meiosis in:

(a) 1890

(b) 1891

(c) 1892

(d) 1893

48. Many haploid fungi and protozoans produce haploid gametes through:

(a) Mitosis

(b) Meiosis

(c) Regeneration

(d) Budding

49. The diploid sporophyte generation produces haploid spores through:

(a) Mitosis

(b) Meiosis

(c) Budding

(d) Fragmentation

50. Gametophyte generation produces haploid gametes through:

(a) Mitosis

(b) Meiosis

(c) Budding

(d) Fragmentation

51. The abnormal separation of homologous chromosomes during anaphase of meiosis:

(a) Disjunction

(b) Non-disjunction

(c) Synapsis

(d) Crossing over

52. The abnormal number of chromosomes in humans:

(a) 45 or 43

(b) 47 or 45

(c) 46

(d) All of these

53. The programmed cell death:

(a) Necrosis

(b) Apoptosis

(c) Endocytosis

(d) Exocytosis

54. In an adult human, the number of cells that die each day by apoptosis:

(a) 30 – 50 billions

(b) 40 – 60 billions

(c) 50 – 70 billions

(d) 60 – 80 billions

55. Blebs break off from the cell and are called:

(a) Apoptotic bodies

(b) Lysosomes

(c) Both a & b

(d) None of these

56. The accidental cell death:

(a) Phagocytosis

(b) Apoptosis

(c) Both a & b

(d) Necrosis

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