1. If a vegetative plant cell has 16 chromosomes, how many chromosomes does it have at the time of mitosis?

A 8 chromosomesB 32 chromosomesC 16 chromosomesD 48 chromosomes

2. The chromosomes are most visible in which part of the onion root tip?

A Root capB Mature rootC Behind root tipD Base of root

3. The process of mitosis can be subdivided into 4 stages. Which of these sequence is correct?

A Prophase, anaphase, telophase and metaphase.

B Prophase, metaphase, anaphase and telophase.

C prophase, anaphase, metaphase and telophase.

D prophase, telophase, anaphase and metaphase.

4. Cytokinesis in plant begins with the formation of

A cell wall on one side.B ring from the sides.C plasma membrane across it.D cell plate at the centre.

SMKBiology

Test 1 17 July 2007 1 Hour

Nama Pelajar : Kelas : Markah :

5. How many daughter cells are produced at the end of mitosis?

A 2 cellsB 4 cellsC 6 cellsD 8 cells

6. A human ovum has 23 chromosomes. What is the chromosome number of a person's check cells?

A 23 chromosomesB 46 chromosomesC 86 chromosomesD 92 chromosomes

7. If a plant has a chromosome number of 24 chromosomes. How many chromosomes does its gametes have?

A 5B 10C 12D 48

8. In the first division of meiosis, the chromosome number is

A reduced by half.B remained constant.C increased by two times.D increased by three times.

9. In the second division of meiosis, the chromosome number is

A reduced by half.B remained constant.C increased by two times.D increased by three times.

10. Meiosis occurs in

I anther.II stem.

III ovary.IV leaf.

A I and III onlyB II and IV onlyC I, II and III onlyD I, II, III and IV

11. Mitosis occurs in

I ovary.II stem.III root.IV leaf.

A I and III onlyB II and IV onlyC II, III and IV onlyD I, II, III and IV

12. The term mitosis and meiosis refers to the division of

A the cell.B the nucleus.C the cytoplasm.D the chromosome.

13. The number of chromosomes in a plant or animal cell depends on

I the age of the cell.II its rate of protein synthesis.III the species of the plant or animal.IV whether it is a vegetative cell or a

gamete.

A I and III onlyB II and IV onlyC III and IV onlyD IV only

14. Mitosis is a process of cell division in which

I 2 daughter cells are produced.

II the chromosome number is kept constant.

III there is a reduction in the chromosome number.

IV 4 daughter cells are produced.

A I and II onlyB II and IV onlyC I and III onlyD I, II, III and IV only

15. At the end of mitosis, the daughter cell resembles that of its parent cell in

I The number of chromosomes.II The size of the cell.III The type of chromosomes.IV The amount of cytoplasm.

A I and III onlyB II and IV onlyC I, II and III onlyD I, II, III and IV

16. The products of meiosis are

I pollen grains.II gametes.III spermatozoa.IV terminal buds.

A I and II onlyB I, II and III onlyC II and IV onlyD I, II, III and IV

17. In animals, cells that are haploid in nature are

I spermatozoa.II ovum.III zygote.IV neurone.

A I and III onlyB II and IV only

C I and II onlyD I, II and III only

18. In all organisms, the unit of inheritance is termed

A heredity.B the locus.C the synapsis.D the gene.

19. In meiosis, crossing over occurs in

A Prophase I.B Prophase II.C Metaphase I.D Metaphase II.

20. In mitosis and meiosis, the structure which controls the movement of the chromosomes is called

A the chromosome.B the centromere.C the spindle fibres.D the nuclear membrane.

21. How many chromosomes do humans have in their liver cells?

A 23B 46C 48D 69

22. In telophase of mitosis,

I the nuclear membrane reforms.II the spindle disappears.III the chromosomes are more densely

stained.IV the loci pair.

A I and II onlyB I and III onlyC I, II and III only

D II and IV only

23. In meiosis, the process in which homologous chromosomes pair up and lie side by side is known as

A chiasma.B bivalent.C synapsis.D synaps.

24. In preparing the slide of an onion root tip, what stain is used to stain the chromosomes?

A Bicarbonate indicatorB Methylene blueC acetic orceinD Iodine solution

25. A cell with two complete sets of chromosomes is termed

A homologous.B diploid.C haploid.D polyploid.

26. Cells such as ovum and sperms which have only one set of chromosomes are termed

A haploid.B homologous.C diploid.D tetraploid.

27. The phase during which chromosomes lined up at the equator of the cell is known as

A prophase.B anaphase.C metaphase.D telophase.

28. Division of cytoplasm to form two daughter cells is known as

A mitosis.B cytokinesis.C meiosis.D constriction.

29. The number of chromosomes in the somatic cell of an animal is 10. How many chromosomes are found in the zygote of this animal?

A 5B 10C 20D 40

30. This is the effect of uncontrolled mitosis in living things.

A Albinism.B Cancer.C Diabetes.D Anorexia.

31. Homologous chromosomes separate during which stage of meiosis?

A Anaphase IB Anaphase IIC Prophase ID Prophase II

32. Mitosis is important in

I asexual reproduction.II repair and replacement of worn-out

cells.III biodiversity.IV growth process.

A I and II onlyB I, II and IV onlyC II and IV onlyD I, II, III and IV

33. The diagram shows an animal cell undergoing meiosis I.

How many chromosomes are there in the gamete of this animal?

A 2B 4C 8D 16

34. The table shows the events that occur during meiosis.

W- Nucleus disappearsX - Nuclear membrane disappearsY - The chromosomes shorten and

thickenZ - Homologous chromosomes arrange

themselves at the equatorial plane

Which of the events occur during metaphase I?

A W onlyB Z onlyC W and Z onlyD Y and Z only

35. Meiosis occurs during the formation of

I retinal cells.II nerve cells.III sperms.IV ovum.

A I, II and III onlyB I and II onlyC III and IV onlyD I, II, III and IV

36. Which of the following undergoes mitosis?

I SkinII MeristemIII CambiumIV Gamete

A I and III onlyB II and IV onlyC II and III onlyD I, II, III and IV

37. In plants, mitosis occurs in

I root tip.II shoot tip.III lateral meristem.IV buds.

A I and II onlyB I, II and III onlyC III and IV onlyD I, II, III and IV

38. The diagram shows an animal cell undergoing mitosis.

How many chromosomes are there in the somatic cell of this animal?

A 2B 4C 8

D 16

39. The diagram shows the nucleus of a somatic cell of an animal.

Which of the following represents the chromosomes in the gamete of this animal?

A I and III onlyB II, III and IV onlyC I, II and III onlyD I, II, III and IV only

40. The diagram shows the genetic constitution of a parent cell and a few daughter cells.

Which of the following statement is true?

A Sel T is a gamete.B Sel U has undergone crossing-over.C Sel W has a diploid number of

chromosomes.D Sel V is the result of a mitotic

division.

41. The diagram shows an animal cell undergoing meiosis at anaphase II.

How many chromosomes are there in the diploid cell of this animal?

A 3B 6C 12D 24

42. Which of the following structures is a product of mitosis?

I OvulII Root tipIII Shoot tipIV Floem

A I and III onlyB I and II onlyC II, III and IV onlyD I, II, III and IV

43. The exchange of segments of homologous chromosomes during synapsis is known as

A pairing.B chiasma.C crossing-over.D turn-over.

44. Which of the following are differences between mitosis and meiosis?

Mitosis MeiosisI One division Two divisionsII Chromosomes

separate to different poles.

Chromatids separate to different poles.

III Daughter cells are diploid.

Daughter cells are haploid.

IV The parent cell is diploid.

The parent cell is haploid.

A I and III onlyB II and III onlyC I and IV onlyD II and IV only

45. The sequence shows the stages in mitosis.

Which of the following is true regarding stage Q?

I The chromosomes arrranged themselves at the equatorial place.

II The chromotids separate and go to opposite poles.

III The nuclear membrane forms.IV The centromere divides into two.

A I and III onlyB II and IV onlyC I, II and III onlyD I, II, III and IV

46. The diagram shows a plant cell undergoing mitosis.

The cell is at

A telophase.B prophase.C anaphase.D metaphase.

47. In one minute, a bacteria can divide mitotically to form 2 bacteria. If you have 2 bacteria, how many bacteria can be obtained in 5 minutes?

A 8B 16C 32D 64

48. In tissue culture technique, which of the following conditions are important?

I The culture medium and the apparatus used has to be sterile.

II The culture medium must have enough nutrients.

III The culture medium must have the correct pH.

IV The test tubes and glass jars used must be covered.

A I, II and III onlyB I, II and IV onlyC II, III and IV onlyD I, II, III and IV

49. What are the disadvantages of cloning?

I Clones do not show any genetic variation.

II Clones can be wiped out if there is any environmental changes.

III Clones share the same level of resistance to certain diseases or pest.

IV Clones can be produced in a short time.

A I, II and III onlyB I, II and IV onlyC II, III and IV onlyD I, II, III and IV

50. The nucleus of a cell has 16 chromosomes before division. Which of the following is true of the number of chromosomes in the daughter after mitosis or meiosis?

Mitosis MeiosisA 16 16B 32 16C 16 8D 16 32

51. Which of the following occurs during the telophase stage of mitosis in an animal cell?

I Constriction of the cell occurs.II The nucleur membrane forms again.III Haploid number of chromosomes

formed.IV Spindle fibers begin to disappear.

A I and II onlyB II and III onlyC I, II and IV onlyD I, II, III and IV

52. Meiosis occurs during the formation of

A retinal cells.B nerve cells.C erythrocytes.D sperms.

53. Mitosis is made up of a few stages. Which of these sequence is correct?

A Prophase anaphase telophase metaphase.

B Metaphase anaphase telophase prophase.

C Prophase metaphase anaphase telophase.

D Anaphase telophase prophase metaphase.

54. The diagram shows the process of meiosis.

How many chromosomes will each daughter cell have?

A 4B 8C 16D 32

55. The statement describes a certain phase in mitosis.

· Nuclear membrane disappears· Nucleolus slowly disappears· Chromosomes shorten and thicken

What phase is this?

A ProphaseB MetaphaseC AnaphaseD Telophase

56. The diagram shows a cell at a certain stage of meiosis.

The cell is in

A prophase I.B metaphase I.C telophase II.D anaphase II.

57. The diagram shows a cell undergoing mitosis.

What are the events that occur during this stage of mitosis?

I Formation of centrioles.II Contraction of the spindle fibers.III Loss of nuclear membrane.IV Chromatids move to different poles

of the cell.

A I and III onlyB II and IV onlyC I, II and III onlyD I, II, III and IV

58. What happens in telophase II of meiosis?

A Crossing overB CytokinesisC Separation of homologous

chromatidsD Synapsis

59. Which of the following is true regarding mitosis?

I Each daughter cell has the same number and type of chromosomes as the parent cell.

II Four daughter cells are formed.III Four stages are involved.IV Occurs in somatic cells.

A I and III onlyB II and III onlyC I, III and IV onlyD I, II, III and IV

60. The diagram shows cells in different stages of division. In which of the cells does replication of DNA takes place?

61. The diagram shows a cell undergoing different stages of meiosis. Which of the following is undergoing prophase I of meiosis?

A

B

C

D

62. The diagram shows chromosomes in a stage of meiosis.

The chromosomes are undergoing

A duplication.B replication.C synapsis.D crossing over.

63. The diagram shows a cell cycle.

What does P represent?

A CytokinesisB MitosisC Replication

D Duplication

64. The diagram shows a cell cycle.

At what stage in the life cycle does growth and protein synthesis takes place?

A MB NC OD P

65. The diagram shows a cell cycle.

At what stage in the life cycle does replication of chromosomes take place?

A MB NC OD P

66. The division of cytoplasm begins at

A prophaseB metaphaseC anaphaseD telophase

67. In the malphigian layer of the skin in man, mitosis is taking place actively to

I replace the old epithelial cells.II produce sebum.III promote the growth of hairs.IV increase the number of diploid cells

for growth.

A II onlyB I and IV onlyC II and IV onlyD I, II, III and IV

68. The basic hereditary unit in an organism is a

A chromatid.B chromosome.C synapsis.D gene.

69. In the preparation of a slide of the root tip of a plant, a few drops of acetic orcein was used to

A stain protoplasm.B preserve the cell.C dissolve the cell membrane.D stain chromosomes.

70. The diagram shows a chromosome.

The structure labelled P is

A centriole.

B chromatid.C bivalent.D centromere.

71. The diagram shows fertilization between the male and female gametes.

Which of the following shows the correct chromosome condition in X, Y and Z?

X Y ZA Haploid Diploid DiploidB Diploid Diploid DiploidC Diploid Haploid HaploidD Haploid Haploid Diploid

72. The diagram shows the chromosome number of a cell during mitosis.

Name stage S.

A InterphaseB Prophase

C MetaphaseD Anaphase

73. In the cloning techique of plants, which of the following tissues can be used?

I The root tissueII The stem tissueIII The seedIV The pollen grain

A I and II onlyB III and IV onlyC I, II and III onlyD I, II, III and IV