NCERT CLASS 11 | TOPIC : CHEMICAL CO-ORDINATION AND INTEGRATION | QB-1 | NEET BIOLOGY ONLINE TEST

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NCERT CLASS 11 | TOPIC : CHEMICAL CO-ORDINATION AND INTEGRATION | QB-1 | NEET BIOLOGY ONLINE TEST

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It contains 100 important questions. Choose the most correct answer. Then check your answer. Try again if there are errors. Regards : www.onlinetest.kalvisolai.com

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1 ➤ 1. Select the incorrect statement from the following:

(a) Neural system provides point to point rapid coordination among organs. (b) Neural coordination is fast. (c) Neural coordination is short-lived. (d) Nerve fi bres innervates all the cells of body so cellular function be continuously regulated.

2 ➤ 2. Which system jointly coordinates and regulates the physiological functions in the body?

(a) Nervous system (b) Endocrine system (c) Both (a) and (b) (d) Excretory system

3 ➤ 3. Hormonal system is very important because

(a) Neural coordination is fast (b) Nerve fi bres do not innervate all the cells of body. (c) Neural system provides point to point coordination among organs. (d) Neural coordination is short-lived.

4 ➤ 4. Endocrine glands

(a) Are ductless (b) Secrete hormones (c) Pour their secretion in blood (d) All of these

5 ➤ 5. Identify A to F in the given figure.

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(a) A–Hypothalamus, B–Pineal, C–Thymus, D–Adrenal, E–Pituitary, F–Thyroid and parathyroid (b) A–Pituitary, B–Pineal, C–Hypothalamus, D–Thyroid and parathyroid, E–Thymus, F–Adrenal (c) A–Thymus, B–Pituitary, C–Thyroid and parathyroid, D–Pineal, E–Hypothalamus, F–Adrenal (d) A–Pineal, B–Thyroid and parathyroid, C–Pituitary, D–Hypothalamus, E–Adrenal, F–Pineal

6 ➤ 6. Hormones are

(a) Non-nutrient chemicals (b) Intercellular messengers (c) Produced in traces (d) All of these

7 ➤ 7. Select from the following the total number of endocrine glands: Pituitary, pineal, thyroid, parathyroid, adrenal, pancreas, thymus, gonads

(a) 7 (b) 8 (c) 6 (d) 5

8 ➤ 8. The following organs produce hormones except

(a) GIT (b) Liver and kidney (c) heart (d) urinary bladder

9 ➤ 9. Hypothalamus contains several groups of neurosecretory cells called _________ which produce hormones.

(a) Ganglion (b) Plexus (c) Nuclei (d) Astrocytes

10 ➤ 10. Hypothalamus is a part of

(a) Forebrain (b) Mid-brain (c) Hindbrain (d) None of these

11 ➤ 11. Hypothalamus is

(a) Roof of diencephalon (b) Basal part of diencephalon (c) Lateral wall of diencephalon (d) All of these

12 ➤ 12. Hypothalamus directly regulates the _________ endocrine gland.

(a) Pituitary (b) Thyroid (c) Thymus (d) Pancreas

13 ➤ 13. Releasing hormones and inhibiting hormones are produced by

(a) Pituitary (b) Thyroid (c) Thymus (d) Hypothalamus

14 ➤ 14. Pars distalis produces how many trophic hormones?

(a) 4 (b) 5 (c) 6 (d) 8

15 ➤ 15. The following hormones are released by hypothalamus except

(a) GnRH (b) Somatostatin (c) TSH–RH (d) PRL

16 ➤ 16. Select the incorrect statement from following:

(a) Invertebrates possess very simple endocrine system. (b) Anterior pituitary is under control of hypothalamus by portal system. (c) Posterior pituitary is under direct neural regulation of hypothalamus. (d) Hypothalamus secretes tropic hormones.

17 ➤ 17. Which of the following is incorrect about pituitary?

(a) Located in bony cavity called sella turcica. (b) Attached to hypothalamus by stalk. (c) Divided anatomically into adenohypophysis and neurohypophysis. (d) Secretes released and inhibitory hormones.

18 ➤ 18. Identify A to E in the given figure. 5. Identify A to F in the given figure.

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(a) A–Hypothalamus, B–Hypothalamic neurons, C–Portal circulation, D–Posterior pituitary, E–Anterior pituitary (b) Posterior pituitary, B–Hypothalamic neurons, C–Hypothalamus, D–Anterior pituitary, E–Posterior pituitary (c) A–Anterior pituitary, B–Portal circulation, C–Hypothalamus, D–Posterior pituitary, E–Hypothalamic neurons (d) A–Hypothalamic neurons, B–Posterior pituitary, C–Anterior pituitary, D–Portal circulation, E–Hypothalamus

19 ➤ 19. Adenohypophsyis consists of

(a) Pars distalis (b) Pars intermedia (c) Pars nervosa (d) Both (a) and (b)

20 ➤ 20. Neurohypophysis consist of

(a) Pars distalis (b) Pars intermedia (c) Pars nervosa (d) All of these

21 ➤ 21. Which is commonly called anterior pituitary?

(a) Pars distalis (b) Pars intermedia (c) Pars nervosa (d) All of these

22 ➤ 22. Which is commonly called posterior pituitary?

(a) Pars distalis (b) Pars intermedia (c) Pars nervosa (d) All of these

23 ➤ 23. Which of the following hormones are secreted by pars distalis (find out total numbers)? GH, PRL, MSH, FSH, LH, TSH, ACTH, ADH

(a) 4 (b) 5 (c) 6 (d) 8

24 ➤ 24. Pars intermedia secretes

(a) Follicle stimulating hormone (b) Melanocyte stimulating hormone (c) Melatonin (d) Prolactin

25 ➤ 25. Posterior pituitary stores and release two hormones

(a) Oxytocin (b) Vasopressin (ADH) (c) Growth hormone (d) Both (a) and (b)

26 ➤ 26. Where is oxytocin and ADH synthesized?

(a) Ant pituitary (b) Post pituitary (c) Hypothalamus (d) Thalamus

27 ➤ 27. Which of the following hormones regulate the growth of the mammary glands and formation of milk?

(a) GH (b) TSH (c) Prolactin (PRL) (d) ACTH

28 ➤ 28. Which of the hormone stimulates the synthesis and secretion of thyroid hormone?

(a) GH (Growth Hormone) (b) TSH (Thyroid Stimulating Hormone) (c) PRL (Prolactin) (d) ACTH (Adrenocorticotropic Hormone)

29 ➤ 29. Which of the following hormone stimulates the synthesis and secretion of steroid hormones called glucocorticoids from the adrenal cortex?

(a) TSH (b) ACTH (c) LH (d) FSH

30 ➤ 30. _________ stimulates the synthesis and secretion of hormone called androgens from testis.

(a) FSH (b) ACTH (c) LH = ICSH (d) GH

31 ➤ 31. _________ induces ovulation of fully mature follicle (Graffian follicles) and maintains the corpus luteum, formed from the remnants of the graffian follicles after ovulation.

(a) FSH (b) ACTH (c) LH (d) GH

32 ➤ 32. _________ stimulate growth and development of ovarian follicles in females.

(a) FSH (b) LH (c) PRL (d) TSH

33 ➤ 33. Which of the following hormones of anterior pituitary together called gonadotropins?

(a) LH and ACTH (b) FSH and LH (c) TSH and PRL (d) MSH and LH

34 ➤ 34. Over-secretion of GH (growth hormone) in child leads to

(a) Dwarfism (b) Cretinism (c) Gigantism (d) Tetany

35 ➤ 35. Low secretion of GH in child leads to

(a) Pituitary dwarfism (b) Gigantism (c) Cretinism (d) Tetany

36 ➤ 36. _________ acts on the smooth muscles of our body and stimulate their contraction.

(a) LH (b) FSH (c) Oxytocin (d) GH

37 ➤ 37. In females _________ stimulates a vigorous contraction of uterus at the time of child birth.

(a) LH (b) FSH (c) Oxytocin (d) Relaxin

38 ➤ 38. From which part of nephron ADH stimulates reabsorption of water and electrolyte?

(a) PCT (b) HL (c) Distal tubules (d) Bowman capsule

39 ➤ 39. Whoch of the following hormone is known as antidiuretic hormone?

(a) Oxytocin (b) Prolactin (c) Luteinizing Hormone (d) Vasopressin

40 ➤ 40. Diuresis is reduced by

(a) Oxytocin (b) Prolactin (c) Luteinizing hormone (d) Vasopressin

41 ➤ 41. _________ acts on melanocyte (melanin contains cells) and regulates pigmentation of skin.

(a) LH (b) Melatonin (c) FSH (d) TSH

42 ➤ 42. Pineal gland is located on

(a) Dorsal side of mid-brain (b) Dorsal side of hindbrain (c) Dorsal side of forebrain (d) Vertical side of forebrain

43 ➤ 43. Pineal gland secretes _________ hormone.

(a) MSH (b) Melatonin (c) FSJ (d) Insulin

44 ➤ 44. Melatonin influences

(a) Metabolism, pigmentation (b) Menstrual cycle (c) Defence capability (d) All of these

45 ➤ 45. 24 hour diurnal rhythms of our body is maintained by

(a) Melatonin (b) Glucagon (c) Thymosin (d) Oxytocin

46 ➤ 46. Menstruation cycle is affected by the following hormones except

(a) Thyroid (b) Melatonin (c) Oestrogen (d) Oxytocin

47 ➤ 47. Thin flap of connective tissue which connects two lobes of thyroid is known as

(a) Lobes (b) Ileum (c) Isthmus (d) Ampulla

48 ➤ 48. Which of the following is incorrect about thyroid gland?

(a) It is composed of follicles and stromal tissues. (b) It secretes tetraiodothyronine or thyroxine (T4) and triiodothyronine (T3), TCT. (c) It consists of 4 lobes. (d) It is stimulated by the hormone TSH.

49 ➤ 49. Enlargement of thyroid gland is called

(a) Hypothyroidism (b) Hyperthyroidism (c) Goitre (d) Isthmusa

50 ➤ 50. The features of cretinism includes

(a) Stunted growth (b) Mental retardation and low IQ (c) Abnormal skin and deaf mutism (d) All of these

51 ➤ 51. Hypothyroidism during pregnancy causes defective development and maturation of growing baby leading to

(a) Addison’s disease (b) Cretinism (c) Creatinine (d) Tetany

52 ➤ 52. Hypothyroidism is caused by

(a) Cancer of thyroid gland (b) Development of nodule of thyroid gland (c) Iodine deficiency (d) Both (a) and (b)

53 ➤ 53. Hypothyroidism causes

(a) Irregular menstrual cycle (b) Reduced BMR (c) Reduced production of RBC (d) All of these

54 ➤ 54. Thyroid gland secretes

(a) T3 (b) T4 (c) TCT (d) All of these

55 ➤ 55. Thyroid controls the metabolism of

(a) Carbohydrates (b) Proteins (c) Lipids (fat) (d) All of these

56 ➤ 56. A. Melatonin influences menstrual cycle and our defence capability.

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B. In adult women, hypothyroidism may cause menstrual cycle to become irregular.

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C. Protein hormone secreted by thyroid, TCT (Thyrocalcitonin) regulates the blood calcium level.

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D. Maintenance of water and electrolytes balance is also influenced by thyroid hormone.

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E. Oxytocin causes milk ejection from mammary gland.

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Select the correct statement:

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(a) A, B and C only (b) A, B, C and E only (c) All except D (d) All statements are correct

57 ➤ 57. Which of the following hormones affect Ca2+ ion metabolism?

(a) TCT (Thyrocalcitonin) (b) Parathyroid hormone (PTH) (c) Both (a) and (b) (d) Cortisol

58 ➤ 58. The full form of PTH is

(a) Parathyroid hormone (b) Prethyroid hormone (c) Prothyroid hormone (d) Pretectile hormone

59 ➤ 59. PTH is

(a) protein hormone (b) Peptide hormone (c) Biogenic amines (d) Steroid

60 ➤ 60. The process by which PTH increases blood ca2+ level except

(a) Acts on bones and stimulates the process of bone reabsorption/dissolution/demineralization. (b) Reabsorption of ca2+ by the renal tubules. (c) Increases ca2+ absorption from the digested food. (d) Increases osteoblastic activity.

61 ➤ 61. Which of the following is correct about thymus?

(a) Globular structure located on the dorsal side of the heart and aorta. (b) It plays minor role in the development of the immune system. (c) The thymus size increases with age. (d) Thymus doesn’t affect the production of antibodies.

62 ➤ 62. Thymosin is

(a) Peptide hormone (b) Secreted by pituitary (c) Helps in RBC production (d) Decreases WBC production

63 ➤ 63. Which gland plays major role in the differentiation of T-lymphocyte?

(a) Thyroid (b) Thymus (c) Adrenal (d) Gonads

64 ➤ 64. Immune response of old persons are weak because

(a) Thymus is degenerated in old individual (b) Thymus production decreases (c) Both (a) and (b) (d) None of these

65 ➤ 65. The position of adrenal gland is

(a) Anterior part of each kidney (b) Posterior part of each kidney (c) Ventral part of each kidney (d) Dorsal part of each kidney

66 ➤ 66. The term ‘Cortex’ is used in

(a) Brain (b) Kidney (c) Adrenal gland (d) All of these

67 ➤ 67. The adrenal medulla secretes two hormones called adrenaline or epinephrine and nor-adrenaline or nor-epinephrine. These are commonly known as

(a) Steroids (b) Terpenes (c) Catecholamine (d) Cytokinin

68 ➤ 68. Emergency hormone and hormones of fight are

(a) Adrenalin (b) Noradrenaline (c) Cortisol (d) Both (a) and (b)

69 ➤ 69. A. Increase alertness

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B. Pupilary constriction

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C. Piloerection

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D. Increase heart rate

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E. Increase respiratory rate

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F. Sweating

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Which of the above are effects of adrenaline/Noradrenaline?

(a) All except C (b) All except B and F (c) All except B (d) All except B,E and F

70 ➤ 70. Catecholamine causes

(a) Glycogenolysis (b) Proteolysis (c) Lipolysis (d) All of these

71 ➤ 71. Glucocorticoid causes all except

(a) Proteolysis (b) Lipolysis (c) Glycogenolysis (d) Gluconeogenesis

72 ➤ 72. Histological adrenal cortex is divided into how many layers?

(a) 1 (b) 2 (c) 3 (d) 4

73 ➤ 73. Which of the following layers are present in the adrenal cortex from inner to outer?

(a) zona reticularis, zona fasciculata, zona glomerulosa (b) zona fasciculata, zona glomerulosis, zona reticularis (c) Z ona glomerulosa, zona reticularis, zona fasciculata (d) Z ona glomerulosa, zona fasciculata, zona reticularis

74 ➤ 74. The adrenal cortex secretes many hormones commonly called

(a) Catecholamine (b) Peptide (c) Corticoids (d) All of these

75 ➤ 75. In our body the main glucocorticoid is

(a) Adrenaline (b) Aldosterone (c) ADH (d) Cortisol

76 ➤ 76. In our body the main mineral corticoid is

(a) Adrenaline (b) Aldosterone (c) ADH (d) Cortisol

77 ➤ 77. Which of the following is incorrect about glucocorticoid?

(a) Inhibits cellular uptake and utilization of amino acids. (b) Maintains cardio vascular system as well as kidney function. (c) Anti-inflammatory and suppresses the immune response. (d) Glucocorticoid stimulates gluconeogenesis, lipogenesis and proteolysis.

78 ➤ 78. Which of the following are effects of cortisol?

(a) Anti-inflammatory (b) Immunosuppressant (c) Increases RBC production (d) All of these

79 ➤ 79. Aldosterone causes all except

(a) Reabsorption of electrolyte and water from renal tubule (b) Excretion of K+ (c) Excretion of PO3- 4 ion (d) Absorption of K+

80 ➤ 80. Aldosterone helps in the maintenance of

(a) Electrolyte and body fluid volume (b) Osmotic pressure (c) Blood pressure (d) All of these

81 ➤ 81. Androgenic steroids are also secreted by adrenal cortex which causes

(a) Growth of axial hair (b) Growth of pubic hair (c) Growth of facial hair (d) All of these

82 ➤ 82. Adrenal cortex secretes all except

(a) Cortisol (b) Aldosterone (c) Androgenic steroid (d) Relaxin

83 ➤ 83. 1 to 2 million Islets of Langerhans in a human pancreas represents _________ per cent of the pancreatic tissue.

(a) 2–3 (b) 4–6 (c) 10 (d) 1–2

84 ➤ 84. Islet of langerhans consists of

(a) ∝–cells (b) β cells (c) δ–cells (d) All of these

85 ➤ 85. The following are petide hormones except

(a) Insulin (b) PTH (c) Thymosin (d) T4

86 ➤ 86. A. Acts mainly on liver cells

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B. Stimulate glycogenolysis

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C. Stimulate gluconeogenesis

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D. Reduces glucose uptake and utilization

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(a) A and B only (b) B and C only (c) A, B and C only (d) All of these

87 ➤ 87. Select the incorrect statement:

(a) Insulin and glucagon are peptide hormones. (b) Insulin acts mainly on hepatocyte and adipocytes and enhance glucose uptake and utilization. (c) Insulin stimulates glycogenesis. (d) Glucagon inhibits the process of gluconeogenesis.

88 ➤ 88. Following are the functions of insulin except

(a) Glycogenesis (b) ↑ Glucose utilization by hepatocyte (c) ↑ Glucose utilization by adipocyte (d) Gluconeogenesis

89 ➤ 89. Diabetes mellitus is characterized by

(a) Ketonuria (b) Glycosuria (c) Prolonged hyperglycemia (d) All of these

90 ➤ 90. Select the correct matching.

(a) Insulin — ↓es the uptake of glucose utilization by hepatocyte and adipocytes (b) Cortisol — ↓es RBC production, causes inflammation (c) Thymosin — Promotes the production of antibodies to provide humoral immunity also (d) Thyroxine — No role in water and electrolyte balance

91 ➤ 91. Select the incorrect matching.

(a) Z ona fasciculata — Glucocorticoids (b) ∝–cell — Glucagon (c) β–cell — Insulin (d) Follicular cells of thyroid — TCT

92 ➤ 92. Testis act as the

(a) Primary sex organ (b) Endocrine gland (c) Both (a) and (b) (d) None of these

93 ➤ 93. Leydig cells or interstitial cells secretes

(a) Oestrogens (b) Progesterone (c) Testosterone (d) Relaxin

94 ➤ 94. Androgens from the following are

(a) Oestrogens (b) Progesterone (c) Testosterone (d) Relaxin

95 ➤ 95. A. Anabolic effect on protein and carbohydrate metabolism.

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B. Influences male sexual behaviour (libido).

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C. Stimulates spermatogenesis.

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D. Muscular growth, aggressiveness, low pitch voice.

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Above are the functions of which of the following hormones?

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(a) Oestrogens (b) Progesterone (c) Testosterone (d) Relaxin

96 ➤ 96. Select the total number of male accessory sex organs from the following:

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Epididymis, Vas deferens, Seminal vesicle, Prostate, Urethra.

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(a) 2 (b) 3 (c) 4 (d) 5

97 ➤ 97. Androgen regulates the _________ of male accessory sex organ.

(a) Development (b) Maturation (c) Function (d) All of these

98 ➤ 98. Testis is composed of

(a) U riniferous tubules (b) Seminiferous tubules (c) Nephron (d) Neuron

99 ➤ 99. Select the correct matching:

(a) Interstitial cells–Testosterone (b) β-cells–Glucagon (c) ∝-cells–Insulin (d) Follicular cells–TCT

100 ➤ 100. Which one is correct about testis in human?

(a) Situated in scrotal sacs (outside the abdomen) (b) Consists of seminiferous tubule and Leydig cells (c) Secretion effect of male sexual behaviour (libido) (d) All of these

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