Assertion   :       Glucagon is said to lower down the blood sugar level.

Reason      :       Glucagon increase the utilisation of glucose in the tissue and the synthesis of liver glycogen.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Assertion   :       Prolactin is also called the ‘Milk ejection hormone’.

Reason      :       Prolactin stimulates the smooth muscle contractions of the mammary glands.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Assertion   :       A tumor of adrenal cortex may cause addison’s disease.

Reason      :       This happens due to over secretion of cortisol by the tumor.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Assertion   :       Diabetes insipidus is marked by excessive urination and too much thirst for water.

Reason      :       Anti-diuretic hormone (ADH) is secreted by the posterior lobe of pituitary gland.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Assertion    :       Anterior lobe of pituitary is attached to hypothalamus by a vein.

Reason       :      This attachment is done through a portal vein.    

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
  • 1
  • 2
  • 3
  • 4

Which of the following is incorrect about Thyroid hormones?

  • It supports erythropoiesis

  • It maintains water and electrolyte balance

  • It controls blood phosphate level

  • It regulates BMR

Which hormone regulates the calcium level in our body?

  • Thyrocalcitonin

  • Parathyroid hormone

  • Thyroxine

  • Both 1 and 2

Which hormone increases calcium level in blood?

  • Thyrocalcitonin

  • Parathyroid hormone

  • Thyroxine

  • Both 1. and 2.

Which of the following is a hypercalcemic hormone?

  • Thyrocalcitonin

  • Parathyroid hormone

  • Thyroxine

  • Both 1. and 2.

Which of the following is not true about parathyroid hormone?

  • It is a peptide hormone

  • It stimulates resorption of bones

  • It stimulates calcium absorption from renal tubules

  • It stimulates calcium absorption from digested food

Match each item in Column I with one item in Column II and chose your answer from the codes given below:
    Column I                  Column II
   (hormone)                 (action)

Codes:

I

II

III

IV

1.

1

2

3

4

2.

2

1

4

3

3.

2

1

3

4

4.

1

2

4

3


  •  I. Cortisol                Promotes liver glycogen formation
  •  II. Adrenaline          Gluconeogenesis
  •  III. Glucagon          Retards use of glucoseby body cells
  •  IV. hGH                  Glycogenolysis

Match each item in Column I with one item in Column II and chose your answer from the codes given below:
Column I                            Column II
I. Female                          1. Excess of Hypogonadism gonadocorticoids
II. Sexual                         2. Decreased pseudoprecocity estrogen levels
III. Eunuchoidism              3. Failure of testosterone secretion
IV. Gynaecomastia             4. Abnormal estrogen to androgen ratio
Codes:
    I   II   III   IV
  • . 1   2    3    4
  • . 2   1    4    3
  • . 2   1    3    4
  • . 1   2    4    3

What is correct for the hormone whose mechanism of action is shown in the given diagram?
  • This hormone will most likely be synthesized by the neural cells of the hypothalamus
  • This hormone cannot be thyroxin or triiodothyronine
  • This hormone can be a derivative of cholesterol
  • This hormone will have an almost instantaneous onset of action

The basal part of diencephalon is

  •   Hypothalamus

  •   Epithalamus

  •   Thalamus

  •   Both 2 and 3

Group of neurosecretory cells found in hypothalamus is known as

  •   ganglia

  •   nuclei

  •   Tract

  •   nerve

Which of the following types of hormones are released by Hypothalamus

  •   Releasing hormones

  •   Inhibitory hormones

  •   Both 1 and 2

  •   None of these

GnRH is released by which of the following endocrine system?

  • Hypothalamus

  • Anterior pituitary gland

  • Posterior pituitary gland

  • Ovary

Somatostatin is released by which of the following endocrine system?

  • Hypothalamus

  • Anterior pituitary gland

  • Posterior pituitary gland

  • Thyroid gland

Which gland is under the direct neural regulation of hypothalamus?

  • Pineal gland

  • Anterior pituitary gland

  • Posterior pituitary gland

  • Thyroid gland

The hormones which are secreted by hypothalamus reach upto pituitary gland through

  • Blood Capillary System

  • hypothalamohypophysial portal system

  • hepatic portal system

  • Both 1 and 2

Neurohypophysis consists of

  • Pars nervosa

  • Pars intermedia

  • Pars distalis

  • Both B and C

Which of the following hormone is secreted by Pars nervosa?

  • Oxytocin

  • Vasopressin

  • Melanocyte

  • Both 1 and 2

Which of the following hormone is synthesised by hypothalamus

  • Oxytocin

  • Vasopressin

  • Both 1 and 2

  • None of these

How many of the following hormones are secreted by Anterior Pituitary?

GH, PRL, TSH, ACTH, LH, FSH, MSH, Oxytocin and vasopressin

  • 9

  • 8

  • 7

  • 6

 How many of the following hormones are secreted by posterior pituitary?

GH, PRL, TSH, ACTH, LH, FSH, MSH, Oxytocin and vasopressin

  • 2

  • 4

  • 1

  • 6

Which of the following hormones stimulates the synthesis and secretion of steroid hormones from adrenal cortex

  • LH

  • FSH

  • ACTH

  • MSH

Which of the following hormone is responsible for milk ejection from the mammary gland

  • Prolactin

  • Oxytocin

  • FSH

  • LH

Which of the following hormone regulates the growth of mammary glands and formation of milk in them.

  • Prolactin

  • Oxytocin

  • FSH

  • LH

Which of the following hormone induce ovulation and maintains corpus luteum?

  • FSH

  • LH

  • Both A and B

  • Estrogen

A hormone _____ which acts on   ____ of nephron and helps in reabsorption of water and

electrolytes.

  • ADH, PCT

  • ADH, DCT

  • ADH, Loop of Henle

  • None of these 

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Practice Zoology Quiz Questions and Answers