Odisha SSB TGT (CBZ) – Mock Test 3

 Odisha SSB TGT (CBZ) – Mock Test 3

Total Marks: 150 | Total Questions: 100 | Time: 2 Hours | Negative Marking: −0.5

BOTANY (Questions 1–28)

Plant Physiology (Transport in Plants)

1. The ascent of sap mainly occurs through:

A. Phloem

B. Xylem

C. Cortex

D. Epidermis

2. According to the Cohesion-Tension theory, ascent of sap is mainly due to:

A. Root pressure

B. Capillary action

C. Transpiration pull

D. Osmosis

3. Root pressure is most effective:

A. During the day in dry weather

B. During the night or early morning

C. At noon

D. During winter only

4. Which cells regulate the opening and closing of stomata?

A. Companion cells

B. Guard cells

C. Epidermal cells

D. Mesophyll cells

5. The movement of water across a selectively permeable membrane is called:

A. Diffusion

B. Active transport

C. Osmosis

D. Imbibition

Mineral Nutrition

6. Which element is essential for chlorophyll synthesis?

A. Magnesium

B. Calcium

C. Sodium

D. Chlorine

7. Deficiency of nitrogen causes:

A. Chlorosis of older leaves

B. Red coloration of flowers

C. Excessive branching

D. Delayed flowering only

8. Which of the following is a micronutrient?

A. Calcium

B. Sulphur

C. Boron

D. Phosphorus

Photosynthesis

9. Oxygen released during photosynthesis comes from:

A. Carbon dioxide

B. Water

C. Glucose

D. Chlorophyll

10. Photolysis of water occurs in:

A. Photosystem I

B. Photosystem II

C. Calvin cycle

D. Stroma

11. The first stable product in C₄ plants is:

A. PGA

B. OAA

C. RuBP

D. Pyruvate

12. Which enzyme fixes CO₂ initially in C₄ plants?

A. Rubisco

B. PEP Carboxylase

C. Catalase

D. ATP Synthase

13. The Calvin cycle is also known as:

A. Hatch-Slack cycle

B. C₂ cycle

C. Dark reaction

D. Glycolysis

Respiration

14. Complete oxidation of one glucose molecule produces approximately:

A. 2 ATP

B. 18 ATP

C. 36–38 ATP

D. 100 ATP

15. Glycolysis is also called:

A. Krebs cycle

B. EMP pathway

C. Calvin cycle

D. Pentose cycle

16. Which molecule enters the Krebs cycle?

A. Pyruvic acid

B. Acetyl-CoA

C. Glucose

D. NADH

Plant Growth and Development

17. Which hormone is responsible for fruit ripening?

A. Auxin

B. Cytokinin

C. Ethylene

D. ABA

18. Gibberellins promote:

A. Seed dormancy

B. Stem elongation

C. Leaf fall

D. Stomatal closure

19. Apical dominance is mainly due to:

A. Cytokinin

B. Auxin

C. Ethylene

D. ABA

20. Which hormone promotes cell division?

A. Cytokinin

B. Ethylene

C. ABA

D. Auxin

Plant Reproduction

21. Double fertilization is a characteristic feature of:

A. Gymnosperms

B. Angiosperms

C. Bryophytes

D. Pteridophytes

22. Triple fusion results in the formation of:

A. Zygote

B. Endosperm

C. Embryo

D. Ovule

23. The embryo sac of angiosperms is usually:

A. 4-nucleate

B. 8-nucleate and 7-celled

C. 16-nucleate

D. 2-nucleate

Ecology

24. Green plants occupy which trophic level?

A. Primary consumer

B. Producer

C. Secondary consumer

D. Decomposer

25. Which pyramid is always upright?

A. Numbers

B. Biomass

C. Energy

D. Population

Biotechnology

26. Bt cotton is resistant to:

A. Aphids

B. Bollworms

C. Whiteflies

D. Nematodes

27. The Ti plasmid is obtained from:

A. Escherichia coli

B. Agrobacterium tumefaciens

C. Rhizobium

D. Bacillus thuringiensis

28. ELISA is mainly used for:

A. DNA sequencing

B. Detection of HIV infection

C. Plant tissue culture

D. PCR amplification

Q. No.	Answer	Q. No.	Answer	Q. No.	Answer	Q. No.	Answer
1	B	8	C	15	B	22	B
2	C	9	B	16	B	23	B
3	B	10	B	17	C	24	B
4	B	11	B	18	B	25	C
5	C	12	B	19	B	26	B
6	A	13	C	20	A	27	B
7	A	14	C	21	B	28	B

 

ZOOLOGY (Questions 29–56)

Human Physiology – Digestion & Circulation

29. The enzyme present in saliva that digests starch is:

A. Pepsin

B. Trypsin

C. Salivary amylase

D. Lipase

30. Hydrochloric acid in the stomach is secreted by:

A. Chief cells

B. Parietal cells

C. Goblet cells

D. Pancreatic cells

31. The largest part of the human digestive system is:

A. Stomach

B. Small intestine

C. Large intestine

D. Oesophagus

32. The main function of bile salts is:

A. Digestion of proteins

B. Emulsification of fats

C. Digestion of carbohydrates

D. Absorption of amino acids

33. The normal blood pressure of a healthy adult is approximately:

A. 120/80 mm Hg

B. 80/120 mm Hg

C. 160/100 mm Hg

D. 90/60 mm Hg

34. The valve between the left atrium and left ventricle is:

A. Tricuspid valve

B. Mitral valve

C. Pulmonary valve

D. Aortic valve

35. RBCs are formed mainly in:

A. Liver

B. Red bone marrow

C. Kidney

D. Spleen

Excretion

36. The structural and functional unit of kidney is:

A. Neuron

B. Nephron

C. Alveolus

D. Glomerulus

37. Ultrafiltration of blood occurs in:

A. Loop of Henle

B. Collecting duct

C. Glomerulus

D. Distal tubule

38. The hormone regulating water balance in the body is:

A. Insulin

B. ADH

C. Thyroxine

D. Growth hormone

Nervous System

39. The junction between two neurons is called:

A. Axon

B. Synapse

C. Dendrite

D. Cell body

40. The cerebellum controls:

A. Thinking ability

B. Body balance and coordination

C. Heartbeat

D. Hormone secretion

41. The neurotransmitter released at neuromuscular junction is:

A. Insulin

B. Acetylcholine

C. Thyroxine

D. Adrenaline

Endocrine System

42. Thyroxine hormone is secreted by:

A. Pituitary gland

B. Thyroid gland

C. Adrenal gland

D. Pancreas

43. Iodine deficiency causes:

A. Diabetes

B. Goitre

C. Anaemia

D. Rickets

44. Adrenaline hormone is secreted by:

A. Adrenal medulla

B. Thyroid gland

C. Pancreas

D. Pituitary gland

Reproduction

45. Testosterone is secreted by:

A. Sertoli cells

B. Leydig cells

C. Ova

D. Corpus luteum

46. The female reproductive hormone estrogen is mainly produced by:

A. Ovary

B. Uterus

C. Pituitary

D. Placenta only

47. Spermatogenesis occurs in:

A. Epididymis

B. Seminiferous tubules

C. Vas deferens

D. Prostate gland

Genetics & Molecular Biology

48. DNA was first isolated by:

A. Watson

B. Friedrich Miescher

C. Mendel

D. Morgan

49. The process of formation of RNA from DNA is called:

A. Translation

B. Replication

C. Transcription

D. Mutation

50. Protein synthesis occurs on:

A. Lysosomes

B. Ribosomes

C. Golgi bodies

D. Centrioles

Evolution

51. Fossils provide evidence for:

A. Photosynthesis

B. Evolution

C. Respiration

D. Digestion

52. The theory of mutation was proposed by:

A. Darwin

B. Lamarck

C. Hugo de Vries

D. Mendel

Ecology & Environment

53. The interaction where both species benefit is:

A. Predation

B. Competition

C. Mutualism

D. Parasitism

54. The primary source of energy in an ecosystem is:

A. Soil

B. Sunlight

C. Water

D. Minerals

55. The process by which plants lose water vapour is:

A. Respiration

B. Transpiration

C. Guttation

D. Diffusion

56. A species restricted to a particular geographical area is called:

A. Exotic species

B. Endemic species

C. Migratory species

D. Invasive species

Q. No.	Answer	Q. No.	Answer	Q. No.	Answer	Q. No.	Answer
29	C	36	B	43	B	50	B
30	B	37	C	44	A	51	B
31	B	38	B	45	B	52	C
32	B	39	B	46	A	53	C
33	A	40	B	47	B	54	B
34	B	41	B	48	B	55	B
35	B	42	B	49	C	56	B

CHEMISTRY (Questions 57–84)

Physical Chemistry

57. The number of particles present in one mole of a substance is:

A. 6.022 × 10²³

B. 3.011 × 10²³

C. 9.8 × 10²³

D. 1.66 × 10²³

58. The SI unit of temperature is:

A. Celsius

B. Fahrenheit

C. Kelvin

D. Joule

59. According to Boyle's law, at constant temperature:

A. Pressure is directly proportional to volume

B. Pressure is inversely proportional to volume

C. Volume is independent of pressure

D. Temperature increases with pressure

60. The pH value of a basic solution is:

A. Less than 7

B. Equal to 7

C. More than 7

D. Zero

61. A catalyst increases the rate of reaction by:

A. Increasing activation energy

B. Decreasing activation energy

C. Increasing product energy

D. Changing equilibrium constant

62. The law of conservation of mass was proposed by:

A. Dalton

B. Lavoisier

C. Avogadro

D. Proust

63. The process of conversion of solid directly into gas is called:

A. Evaporation

B. Condensation

C. Sublimation

D. Fusion

Inorganic Chemistry

64. The atomic number of oxygen is:

A. 6

B. 7

C. 8

D. 16

65. Which element is a halogen?

A. Sodium

B. Chlorine

C. Calcium

D. Magnesium

66. The most abundant element in the Earth's crust is:

A. Silicon

B. Oxygen

C. Aluminium

D. Iron

67. The chemical formula of common salt is:

A. NaOH

B. NaCl

C. KCl

D. CaCO₃

68. The gas used in the Haber process is:

A. Oxygen

B. Nitrogen

C. Hydrogen

D. Chlorine

69. Which metal is extracted by electrolytic reduction?

A. Aluminium

B. Iron

C. Copper

D. Zinc

70. Stainless steel contains:

A. Iron and carbon only

B. Iron, chromium and nickel

C. Copper and zinc

D. Aluminium and magnesium

Organic Chemistry

71. The general formula of alkanes is:

A. CₙH₂ₙ

B. CₙH₂ₙ₊₂

C. CₙH₂ₙ₋₂

D. CₙHₙ

72. The functional group of carboxylic acids is:

A. –OH

B. –CHO

C. –COOH

D. –NH₂

73. Ethanol belongs to the group:

A. Alcohols

B. Aldehydes

C. Ketones

D. Acids

74. The simplest aromatic hydrocarbon is:

A. Methane

B. Benzene

C. Ethene

D. Ethyne

75. Soap is chemically:

A. Sodium or potassium salt of fatty acids

B. Alcohol

C. Protein

D. Carbohydrate

76. Polymer of ethene is:

A. PVC

B. Polythene

C. Nylon

D. Bakelite

77. The main component of natural gas is:

A. Ethane

B. Methane

C. Propane

D. Butane

Environmental Chemistry

78. The major greenhouse gas among the following is:

A. Oxygen

B. Carbon dioxide

C. Nitrogen

D. Hydrogen

79. Acid rain has a pH:

A. More than 7

B. Equal to 7

C. Less than 5.6

D. Exactly 10

80. CFCs are responsible for:

A. Global warming only

B. Ozone layer depletion

C. Acid formation in soil

D. Water purification

Mixed Chemistry

81. The chemical formula of sulphuric acid is:

A. HCl

B. HNO₃

C. H₂SO₄

D. H₂CO₃

82. Which of the following is an exothermic reaction?

A. Photosynthesis

B. Respiration

C. Electrolysis of water

D. Melting of ice

83. The metal used for making electrical wires is:

A. Iron

B. Copper

C. Sodium

D. Mercury

84. The process of rusting requires:

A. Nitrogen only

B. Oxygen and moisture

C. Carbon dioxide only

D. Hydrogen only

Q. No.	Answer	Q. No.	Answer	Q. No.	Answer	Q. No.	Answer
57	A	64	C	71	B	78	B
58	C	65	B	72	C	79	C
59	B	66	B	73	A	80	B
60	C	67	B	74	B	81	C
61	B	68	B	75	A	82	B
62	B	69	A	76	B	83	B
63	C	70	B	77	B	84	B

PEDAGOGY & EVALUATION (Questions 85–100)

Educational Psychology

85. The concept of "Learning by Insight" was proposed by:

A. Pavlov

B. Kohler

C. Skinner

D. Thorndike

86. According to Piaget, children between 7–11 years belong to:

A. Sensorimotor stage

B. Pre-operational stage

C. Concrete operational stage

D. Formal operational stage

87. The theory of operant conditioning was given by:

A. Skinner

B. Pavlov

C. Bandura

D. Bruner

88. The "Law of Effect" was proposed by:

A. Thorndike

B. Piaget

C. Vygotsky

D. Maslow

Teaching Methodology

89. The main objective of teaching science is to develop:

A. Memorization ability

B. Scientific attitude and thinking

C. Only writing skills

D. Examination fear

90. The best method for developing problem-solving ability among students is:

A. Lecture method

B. Problem-solving method

C. Dictation method

D. Drill method

91. A teacher encourages students to ask questions and explore ideas. This approach is:

A. Teacher-centred learning

B. Constructivist approach

C. Rote learning

D. Programmed instruction

92. The use of models, charts and specimens in science teaching helps in:

A. Making learning abstract

B. Providing concrete experiences

C. Reducing understanding

D. Avoiding experiments

Assessment & Evaluation

93. Assessment conducted during teaching-learning process is called:

A. Summative assessment

B. Formative assessment

C. Placement assessment

D. Entrance assessment

94. The main purpose of diagnostic assessment is:

A. Giving final grades

B. Identifying learning difficulties

C. Selecting toppers

D. Conducting examinations

95. In Bloom's taxonomy, the highest level of cognitive domain is:

A. Remembering

B. Understanding

C. Applying

D. Creating

96. A test that measures what it is intended to measure has:

A. Reliability

B. Validity

C. Objectivity

D. Usability

Inclusive Education & ICT

97. Children with special needs should be educated through:

A. Exclusion

B. Inclusive education

C. Isolation

D. Separate learning only

98. ICT-based teaching helps students by:

A. Providing interactive learning experiences

B. Replacing teachers completely

C. Reducing communication

D. Stopping classroom activities

NEP 2020 & Teacher Role

99. NEP 2020 focuses mainly on:

A. Rote memorization

B. Competency-based and experiential learning

C. Only textbook learning

D. Teacher-centred education

100. An effective science teacher should:

A. Encourage curiosity and experimentation

B. Discourage student questions

C. Use only lectures

D. Avoid practical activities

Q. No.	Answer	Q. No.	Answer	Q. No.	Answer	Q. No.	Answer
85	B	89	B	93	B	97	B
86	C	90	B	94	B	98	A
87	A	91	B	95	D	99	B
88	A	92	B	96	B	100	A