12th Class Biology Chapter 19 MCQs with Answers

Welcome to the 12th Class Biology Chapter 19 MCQs Online Test. We are presenting you with top MCQ questions from the 12th Class Biology Chapter Growth And Development 

We want to tell you that you can find all the 12th Class Biology Chapter 19 MCQs online tests on our website. These online tests are great for learning and as well as for scoring maximum marks in your Intermediate Exams. We are making these Class 12 Biology MCQs online tests for those who want full marks in their exams. Attempt all these Grade 12 Biology Online Multiple Choice Questions MCQs before going for the exam and it will be beneficial for you! These online tests contain all the important multiple choice questions in the important topics of the FSC Part 2 Biology Chapter 19 Growth And Development 

12th Class Biology Chapter 15 MCQs with Answers

Youth For Pakistan has provided an excellent opportunity for the students of the 12th class to prepare their Biology Chapter 19 Growth And Development online with MCQs test.

This is a free platform for students to prepare for Biology Exams for Class 12 to get the best accomplishments in annual exams. 12th class Students can analyze themself by attempting this online test system as many times as they want until they find themself fully prepared.

MCQs Class 12 Biology with Answers

The purpose of these online MCQs tests is to help you evaluate your 12th Class Biology Chapter 19 MCQs. These Multiple Choice Questions (MCQs) will prepare you for your academic success in the 12th Class Exams. 12th Class Biology Chapters include Ch#15 Homeostasis, Ch#16 Support and Movement, Ch#17 Coordination and Control, Ch#18 Reproduction, Ch#19 Growth and Development, Ch#20 Chromosome and DNA, Ch#21 Cell Cycle, Ch#22 Variation and Genetics, Ch#23 Biotechnology, Ch#24 Evolution, Ch#25 Ecosystem, Ch#26 Some major Ecosystems and Ch#27 Man and his Environment

What is Growth And Development?

“Growth” simply means “an increase in size and mass of a particular organism over a period of time.” “Development” is defined as “a process wherein a particular organism transforms itself from a lone cell into a more complicated multicellular organism.”

12th Class Biology Chapter 15 MCQs: Growth And Development

1. The progressive changes which are undergone before an organism acquires its adult form constitute choose which one is correct:

  • Metamorphosis
  • Embryonic development
  • Growth
  • Development

2. Meristems found at the tips of root and shoot are called choose which one is correct:

  • Intercalary
  • Lateral
  • Apical
  • None of them

3. During cell division the number of cells increase by choose which one is correct:

  • Elongation
  • Meiosis
  • Mitosis
  • Maturation

4. During elongation the cell volume increases upto 150 times due to uptake of choose which one is correct:

  • Food
  • Minerals
  • Water
  • Air

5. The light which favours elongation of cells is choose which one is correct:

  • Red
  • White
  • Blue
  • Ultraviolet

6. Metabolic activity and growth cannot take place in absence of choose which one is correct:

  • High temperature
  • Light
  • CO2
  • Oxygen

7. what causes apical dominance by diffusing from the apical bud which

inhibits the growth of lateral buds?

  • Food
  • Minerals
  • Water
  • Auxin

8. A series of mitotic divisions which take place in a zygote are called choose which one is correct:

  • Fertilization
  • Growth
  • Gastrulation
  • Cleavage

9. At the cephalic end of primitive streak, closely packed cells form a local

thickening known as choose which one is correct:

  • Splanchnic mesoderm
  • Somatic mesoderm
  • Hensen’s node
  • Gastrocoele

10. The cavity formed between somatic and splanchnic mesoderm is choose which one is correct:

  • Gastrocoele
  • Neurocoel
  • Coelom
  • Primitive streak

11. In 24 hours embryo, the folding of neural plate is clearly visible in choose which one is correct:

  • Neurula
  • Gastrula
  • Blastula
  • Morulla

12. Zygote of which animal Spemann divided into two equal halves with the help of minute ligature of human hair?

  • Salamandar
  • Frog
  • Fish
  • Sheep

13. During gastrulation epiblast and hypoblast are two layers of choose which one is correct:

  • Blastoderm
  • Gastrula
  • Neurula
  • Morulla

14. Larval epidermins is produced by choose which one is correct:

  • Yellow cytoplasm
  • Gray equatorial cytoplasm
  • Clear cytoplasm
  • Gray vegetal cytoplasm

15. The size of Acetabularia may be upto several centimeters, though it has choose which one is correct:

  • Many nuclei
  • No nucleus
  • Two nuclei
  • One nucleus

16. This alga has a long stalk with an umbrella shaped cap at its top and

rhizoids, attached to the ground choose which one is correct:

  • Acetabularia
  • Spirogyra
  • Euglena
  • Chlamydomonas

17. The scientist who worked on Acetabularia is choose which one is correct:

  • Spemann
  • Hans Dietrisch
  • Haemmerling
  • Thimann

18. In 18 hours embryo, it is the most prominent structure choose which one is correct:

  • Neurocoel
  • Notochord
  • Hensen’s node
  • Primitive streak

19. from how many celled embryo did Spemann observed that, if a single cell is separated, it contains a complete set of genes and forms a complete embryo?

  • 8
  • 12
  • 20
  • 16

20. When a piece of ectoderm was removed from Frog’s embryo, it was unable to form normal choose which one is correct:

  • Digestive system
  • Circulatory system
  • Reproductive system
  • Nervous system

21. The human life span is judged to be maximum of choose which one is correct:

  • 150 years
  • 60 years
  • 90 years
  • 120-125 years

22. In microcephaly, the individuals are born with small choose which one is correct:

  • Skull
  • Ulna
  • Humerus
  • Radius

23. The negative physiological changes in our body are called choose which one is correct:

  • Abnormalities
  • Regeneration
  • Growth
  • Degeneration

24. This is the condition in which one of the sex chromosome is missing choose which one is correct:

  • Klinefelter’s syndrome
  • Turner’s syndrome
  • Trisomy
  • Mutation

25. Primary growth choose which one is correct:

  • Optimum temperature for growth
  • Secondary growth
  • Photoperiodism
  • Apical meristems

26. Cambium choose which one is correct:

  • Apical meristems
  • Photoperiodism
  • Secondary growth
  • Optimum temperature for growth

27. Increase in cell volume choose which one is correct:

  • Due to uptake of water
  • Photoperiodism
  • Secondary growth
  • Apical meristems

28. 25-30C choose which one is correct:

  • Optimum temperature for growth
  • Secondary growth
  • Apical meristems
  • Photoperiodism

29. Organogenesis choose which one is correct:

  • Body organs formed, cells interact and differentiate
  • Translucent appearance in blastoderm
  • Blastocoele formed
  • Folding of neural plate visible

30. Blastula choose which one is correct:

  • Folding of neural plate visible
  • Translucent appearance in blastoderm
  • Body organs formed, cells interact and differentiate
  • Blastocoele formed

31. Area pellucida choose which one is correct:

  • Body organs formed, cells interact and differentiate
  • Translucent appearance in blastoderm
  • Blastocoele formed
  • Folding of neural plate visible

32. Neurula choose which one is correct:

  • Body organs formed, cells interact and differentiate
  • Blastocoele formed
  • Folding of neural plate visible
  • Translucent appearance in blastoderm

33. Thimann and Skoog choose which one is correct:

  • 22nd day
  • Apical dominance
  • 21st day
  • Gives to muscle cells

34. Chick hatches choose which one is correct:

  • 21st day
  • 17th day
  • Gives to muscle cells
  • 22nd day

35. Yellow cytoplasm choose which one is correct:

  • Apical dominance
  • Gives to muscle cells
  • 21st day
  • Control the functioning of a specific cell type

36. Determinants choose which one is correct:

  • 21st day
  • Apical dominance
  • 22nd day
  • Control the functioning of a specific cell type

37. Regeneration choose which one is correct:

  • (XXY)
  • Microcephaly
  • Due to aging
  • None of these

38. Arthritis and arteriosclerosis choose which one is correct:

  • Microscephaly
  • Due to aging
  • Ability to regain or recover the lost or injured part
  • None of the above

39. Klinefelter’s syndrome choose which one is correct:

  • (XXY)
  • Microcephaly
  • Due to aging
  • (XO)

40. Turner’s syndrome choose which one is correct:

  • (XO)
  • Ability to regain or recover the lost or injured part
  • XXY
  • Due to aging

41. Which of the followings is irrelevant for growth and development?

  • Cell division
  • Cell elongation
  • Differentiation
  • All of the above

42. The cells which have ability to divide are choose which one is correct:

  • Parenchyma
  • Meristem
  • Collenchyma
  • Leaf cells

43. Match cambium with one the followings choose which one is correct:

  • Apical meristem
  • Lateral meristem
  • Intercalary meristem
  • All of the above

44. The meristem present at the tip of roots is choose which one is correct:

  • Apical merisem
  • Intercalary meristem
  • Lateral meristem
  • All of the above

45. The meristem present at the base of internodes is choose which one is correct:

  • Apical meristem
  • Lateral meristem
  • Intercalary meristem
  • All of the above

46. The growth of flowers is choose which one is correct:

  • Indeterminate
  • Determinate
  • Automatic
  • Controlled

47. The growth of root is choose which one is correct:

  • Indeterminate
  • Secondary growth
  • Primary growth
  • Determinate

48. The growth, in which length of plant increases, is choose which one is correct:

  • Indeterminate
  • Determinate
  • Primary growth
  • Secondary growth

49. The growth, in which width of plant increases, is choose which one is correct:

  • Indeterminate
  • Secondary growth
  • Primary growth
  • Determinate

50. The formation of cells of pith, cortex and vascular bundle is choose which one is correct:

  • Cell elongation
  • Cell division
  • Maturation
  • Cell division

51. The zone present at a little distance from the apex is choose which one is correct:

  • Cell elongation
  • Differentiation
  • Maturation
  • Cell division

52. Which of the followings is external factor in growth?

  • Hormone
  • Nutrition
  • Temperature
  • Water

53. The internal factor for growth is choose which one is correct:

  • Light
  • Oxygen
  • Vitamins
  • Carbon dioxide

54. If plants are grown in dark, it faces the deficiency of choose which one is correct:

  • Water
  • Nutrients
  • Hormones
  • Vitamins

55. Which of the following factors supply energy during growth?

  • Hormones
  • Water
  • Vitamins
  • Nutrients

56. The leaf primordial cells form which of the following organ?

  • Leaves
  • Shoot
  • Leaves and shoot
  • None of the above

57. The cambium is formed in choose which one is correct:

  • Stage 1
  • Stage 2
  • Stage 3
  • Stage 4

58. Xylem and phloem are formed in choose which one is correct:

  • Stage 1
  • Stage 5
  • Stage 4
  • Stage 6

59. Which of the following hormones produces inhibitory effect in apical

dominance?

  • Gibberellins
  • Auxins
  • Cytokinins
  • Abscisic acid

60. The hormone which releases inhibitory effect is choose which one is correct:

  • Gibberellins
  • Cytokinins
  • Abscisic acid
  • Auxins

61. Match growth correlations with one of the following choose which one is correct:

  • Apical dominance
  • Inhibitory effects
  • Compensatory effects
  • All of the above

62. The phenomenon which inhibits the sprouting of lateral bud is choose which one is correct:

  • Apical dominance
  • Inhibitory effects
  • Compensatory effects
  • None of the above

63. The rounded closely packed mass of blastomere is choose which one is correct:

  • Blastula
  • Morulla
  • Gastrula
  • Embryo

64. The layers of blastula are choose which one is correct:

  • Ectoderm
  • Mesoderm
  • Blastoderm
  • Endoderm

65. The stage of embryo with segmented cavity is called choose which one is correct:

  • Blastula
  • Morulla
  • Gastrula
  • Embryo

66. The presumptive endoderm is choose which one is correct:

  • Epiblast
  • Hypoblast
  • Blastoderm
  • None of the above

67. The peripheral part of blastoderm is called choose which one is correct:

  • Area pellucida
  • Area opaca
  • Area of cell division
  • None of the above

68. The upper area with translucent appearance is choose which one is correct:

  • Area pellucida
  • Area opaca
  • Area of cell division
  • None of the above

69. The mesodermal cells migrate medially and caudally to form choose which one is correct:

  • Hensen’s node
  • Primitive gut
  • Primitive streak
  • Somites

70. The primitive groove is marked on both sides of the embryo by choose which one is correct:

  • Henson’s node
  • Primitive ridges
  • Primitive streak
  • Primitive gut

71. Closely packed cells at cephalic end of primitive streak form a local

thickening called choose which one is correct:

  • Primitive gut
  • Hensen’s node
  • Primitive streak
  • Somites

72. Which of the followings form body muscles?

  • Hensen’s node
  • Primitive gut
  • Somites
  • Primitive streak

73. During the development of chick, somites are formed after choose which one is correct:

  • 20 25 hours
  • 25 26 hours
  • 26 27 hours
  • 28 29 hours

74. The cavity formed between somatic and splanchnic mesoderm is choose which one is correct:

  • Blastocoel
  • Primitive cavity
  • Coelom
  • Neurocoel

75. In the chick of 18 hour, the structure formed is choose which one is correct:

  • Neural plate
  • Neural groove
  • Neural fold
  • Neural tube

76. Neural groove is formed after choose which one is correct:

  • 19 20 hours
  • 21 22 hours
  • 23 24 hours
  • 24 25 hours

77. The scientist who worked on sea urchin embryo was choose which one is correct:

  • Spemann
  • Dietrsch
  • Duetrochet
  • Lyn

78. The pigment free area of egg is called choose which one is correct:

  • Animal hemisphere
  • Vegetal hemisphere
  • Gray crescent
  • All of the above

79. The larval epidermis is formed from choose which one is correct:

  • Clear cytoplasm
  • Yellow cytoplasm
  • Grey vegetal
  • Grey equatorial

80. The part of cytoplasm which form notochord is choose which one is correct:

  • Clear cytoplasm
  • Yellow cytoplasm
  • Grey vegetal
  • Grey equatorial

81. Experiments on Acetabulum were performed by choose which one is correct:

  • Spemann
  • Dietrisch
  • Haemmerling
  • Lyn

82. Selection of genes is done by choose which one is correct:

  • Nucleus
  • Chromosome
  • Cytoplasm
  • Ribosomes

83. Haemmerling performed experiments on choose which one is correct:

  • Yeast
  • Salamander
  • Acetabularia
  • Sea urchin

84. Spemann performed experiments on choose which one is correct:

  • Salamander
  • Sea urchin
  • Frog
  • Acetabularia

85. The biologists performed experiments on induction choose which one is correct:

  • Spemann
  • Mangold
  • Both
  • None

86. The primary organizer is choose which one is correct:

  • Ventral lip of blastopore
  • Dorsal lip of blastopore
  • Lateral lip of blastopore
  • None of the above

87. The negative physiological changes in the body are choose which one is correct:

  • Induction
  • Aging
  • Syndrome
  • None of the above

88. The study of aging is called choose which one is correct:

  • Physiology
  • Morphology
  • Gerontology
  • Herpetology

89. Which of the followings can slow down the process of aging?

  • Smoking
  • Over diet
  • Exercise
  • Sleep

90. Which of the followings possesses the greatest power of regeneration?

  • Reptiles
  • Amphibians
  • Man
  • Sponges

91. Lobster can regenerate only choose which one is correct:

  • Mouth
  • Legs
  • Claw
  • Wings

92. Earth worm can regenerate choose which one is correct:

  • Skin
  • Tail
  • Setae
  • Head

93. Salamander can regenerate choose which one is correct:

  • Head
  • Limbs
  • Tail
  • Skin

94. Lizard can regenerate choose which one is correct:

  • Head
  • Limbs
  • Tail
  • Skin

95. Man can regenerate choose which one is correct:

  • Skin
  • Limbs
  • Tail
  • Head

96. Regeneration in plant is confined to choose which one is correct:

  • Roots
  • Stems
  • Leaves
  • All of the above

97. Regeneration by dedifferentiated cells takes place in choose which one is correct:

  • Prawn
  • Salamander
  • Earth worm
  • Star fish

98. The branch which deals with the study of abnormal structures is choose which one is correct:

  • Physiology
  • Teratology
  • Gerontology
  • Herpetology

99. Haemophilia is caused due to abnormalities in choose which one is correct:

  • Hormone
  • Gene
  • Metabolism
  • Environment

100. The syndrome which leads to tallness and aggressiveness is choose which one is correct:

  • XXY
  • XO
  • XYY
  • XXX

101. Tetrogens are choose which one is correct:

  • Genetic factors
  • Environmental factors
  • Hormonal facts
  • Metabolic factors

102. Match tetrogen with the deficiency of one of the following choose which one is correct:

  • Insulin
  • Gene
  • Nutritional
  • None

103. The condition of small skull is choose which one is correct:

  • Haemophilia
  • Cleft palate
  • Microcephaly
  • Polydactyl

104. Match harelip with one of the followings choose which one is correct:

  • Haemophilia
  • Cleft palate
  • Microcephaly
  • Polydactyl

105. The intercalary meristem is choose which one is correct:

  • Meristem present at the tip of roots
  • Meristem present at the tip of stem
  • Meristem present at the base of inter node
  • Meristem present in the vascular tissues

106. Indeterminate growth is choose which one is correct:

  • Growth stops after some times
  • Growth stops but starts again
  • Growth never stop
  • Growth continues during youth age

107. Xylem and phloem are formed in choose which one is correct:

  • Phase of cell division
  • Phase of cell elongation
  • Phase of maturation
  • Phase of differentiation

108. Differentiation means choose which one is correct:

  • Formation of similar cells from different cells
  • Formation of different tissues from similar cells
  • Formation of similar tissues from similar cells
  • None of the above

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