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Test: Adrenal, Thymus & Pineal Gland - NEET MCQ


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30 Questions MCQ Test Biology Class 11 - Test: Adrenal, Thymus & Pineal Gland

Test: Adrenal, Thymus & Pineal Gland for NEET 2024 is part of Biology Class 11 preparation. The Test: Adrenal, Thymus & Pineal Gland questions and answers have been prepared according to the NEET exam syllabus.The Test: Adrenal, Thymus & Pineal Gland MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Adrenal, Thymus & Pineal Gland below.
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Test: Adrenal, Thymus & Pineal Gland - Question 1

Thymus gland develops from embryonic :-

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 1

The triploblastic animals have three prominent germ layers known as ectoderm, endoderm and mesoderm. Thymus gland develops from two hollow elongations (third and fourth pharyngeal pouches) of endoderm which descends to the embryonic thorax by the end of eight weeks of gestation. The lymphoid cells of the gland originate from mesoderm. Thus, the correct answer is option B.

Test: Adrenal, Thymus & Pineal Gland - Question 2

Undersecretion of adrenal cortex causes :-

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 2

Addison's disease is caused due to hyposecretion of steroid hormones from adrenal glands. The steroid hormones are cortisol and aldosterone which are secreted from adrenal cortex.
Cretinism is the retarded mental and physical development due to hyposecretion of thyroid hormones.
Dwarfism is the retarded physical development due to hyposecretion of growth hormone during period of skeletal growth.
Sterility is the inability of an individual to produce offspring.
So, the correct answer is 'Addison's disease'.

Test: Adrenal, Thymus & Pineal Gland - Question 3

Epinephrine is :-

Test: Adrenal, Thymus & Pineal Gland - Question 4

Role of thymus in homosepiens is chiefly concerned with :-

Test: Adrenal, Thymus & Pineal Gland - Question 5

Hyposecretion of aldosterone causes :-

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 5

Addison’s disease is caused by the presence of ineffective ACTH which in turn leads to the deficiency of aldosterone and cortisol hormones of the adrenal cortex. Excessive ACTH secretion by anterior pituitary results in hyperproduction of cortisol causing Cushing’s disease. Gull's disease is caused by hypothyroidism in adults and is characterized by lethargy, hair loss and weight gain. Oversecretion of thyroid hormones causes Graves’s disease which is characterized by the formation of the exopthalamic goiter. 

Test: Adrenal, Thymus & Pineal Gland - Question 6

Hormones produced by adrenal cortex and gonads (sex hormone) are chemically :-

Test: Adrenal, Thymus & Pineal Gland - Question 7

Melatonin is a hormone produced by :-

Test: Adrenal, Thymus & Pineal Gland - Question 8

A tumour in the adrenal zona glomerulosa can cause hyper secretion of hormones producted in that region. Which of the following might you expect to find in a patient with such a tumour :

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 8
Adrenal zona glomerulosa secrete mineralocorticoids i. e. Aldosteron. Hypersecretion of these hormone causes increased in blood sodium levels.
Test: Adrenal, Thymus & Pineal Gland - Question 9

_____ is the smallest gland in human body.

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 9
  • Pineal gland is the smallest gland in the human body with a length of about 5-8 mm.
  • It is located in the epithalamus, near the center of the brain.
  • The gland produces melatonin and serotonin and is, therefore, responsible for modulating sleep patterns.
Test: Adrenal, Thymus & Pineal Gland - Question 10

The function of norepinephrine is :-

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 10

Epinephrine and norepinephrine are very similar neurotransmitters and hormones. While epinephrine has slightly more of an effect on your heart, norepinephrine has more of an effect on your blood vessels. Both play a role in your body's natural fight-or-flight response to stress and have important medical uses as well.

Test: Adrenal, Thymus & Pineal Gland - Question 11

Epinephrine and norepinephrine together known as :-

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 11

Epinephrine and norepinephrine together known as Catecholamine.

Epinephrine and norepinephrine are two neurotransmitters that also serve as hormones , and they belong to a class of compounds known as Catecholamines. 

However, Epinephrines works on both alpha and beta receptors and norepinephrine only works on alpha receptors.

Test: Adrenal, Thymus & Pineal Gland - Question 12

Which of the following pairs of the endocrine gland is located in the brain?

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 12
  • The hypothalamus is the basal part of the diencephalon of the forebrain.
  • It contains a hormone of stimulating and inhibiting the pituitary.
  • The pituitary gland is also located at the base part of the brain region just below the hypothalamus and joined together whereas the pineal gland is present in the very deep region where two halves of the brain join together.
  • This area is present in the middle of the brain known as the epithalamus.
  • It secretes melatonin which functions during the darkness and sends information of night.
Test: Adrenal, Thymus & Pineal Gland - Question 13

Mammals born without a thymus gland fail to manufacture :-

Test: Adrenal, Thymus & Pineal Gland - Question 14

Retention of sodium in body depends up on hormone from :-

Test: Adrenal, Thymus & Pineal Gland - Question 15

Adrenal cortex also controls the carbohydrate metabolism through :-

Test: Adrenal, Thymus & Pineal Gland - Question 16

Which part of adrenal secretes hydrocorticosterone hormone :-

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 16

The cells of the Zona Fasciculata secrete the glucocorticoids Cortisol and Corticosterone. These hormones regulate carbohydrate metabolism, particularly when an individual is in a time of stress (as part of the “fight-or-flight” response).

Test: Adrenal, Thymus & Pineal Gland - Question 17

Which of the following claims regarding the thymus is untrue?

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 17
  • The thymus is an endocrine gland that is located beneath the sternum and between the lungs.
  • Thymosin is secreted from there, and T lymphocyte differentiation occurs there.
  • Production of antibodies is encouraged.
  • However, in elderly people, the thymus degenerates.
Test: Adrenal, Thymus & Pineal Gland - Question 18

Conn's disease is due to :-

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 18

Hyperaldosteronism is a disease in which the adrenal gland(s) make too much aldosterone which leads to hypertension (high blood pressure) and low blood potassium levels.

Test: Adrenal, Thymus & Pineal Gland - Question 19

What is the exact location of the Adrenal gland?

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 19
  • Just above the kidneys are the adrenal glands. It is shaped like a pyramid.
  • The thymus is situated between the lungs, the pituitary gland is situated at the base of the hypothalamus, and the thyroid gland is situated surrounding the trachea.
Test: Adrenal, Thymus & Pineal Gland - Question 20

Adrenal gland is :-

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 20
Adrenal gland is composed of 2 heterogeneous types of tissue. these tissues come from different embryological precursors. The CORTEX of adrenal gland is derived from MESODERM whereas the MEDULLA is derived from neural crest, that is ECTODERMAL in origin. So answer d is correct.
Test: Adrenal, Thymus & Pineal Gland - Question 21

Adrenaline increases :-

Test: Adrenal, Thymus & Pineal Gland - Question 22

Which hormone control activity of zona glomerulosa of adrenal gland :-

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 22

When the renal blood flow is reduced, juxtaglomerular cells in the kidneys convert the prorenin in the blood into renin and secrete into circulation. Plasma renin performs the conversion of angiotensinogen to angiotensin I. Angiotensin I is converted to angiotensin II by the enzyme angiotensin-converting enzyme. Angiotensin II causes blood vessels to constrict, resulting in increased blood pressure. Angiotensin II also stimulates the secretion of the hormone aldosterone from the zona glomerulosa of adrenal cortex. Aldosterone causes the tubules of the kidneys to increase the reabsorption of sodium and water into the blood. This increases the volume of fluid in the body, which also increases blood pressure.

Thus, the correct answer is option A.

Test: Adrenal, Thymus & Pineal Gland - Question 23

 "Cushing" disease is related with :-

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 23
Due to hypersecretion of adrenal hormone cushing syndrome occur.
Test: Adrenal, Thymus & Pineal Gland - Question 24

All of the following are functions of adrenaline except :-

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 24

Adrenaline is produced in the medulla of the adrenal gland. The overall effect of adrenaline is to prepare the body for the fight or flight response in times of stress, i.e., for vigorous sudden action. 

Key actions of adrenaline include increasing the heart rate, increasing blood pressure, expanding the air passages of the lungs, enlarging the pupil in the eye, redistributing blood to the muscles and altering the body's metabolism, so as to maximise blood glucose levels (primarily for the brain).
Progesterone allows the blastocyst for implanting and develop and protects against the expulsion of the developing pregnancy. Progesterone declines towards the time of delivery, leaving oestrogen to increase the uterine contractility.

So, the correct answer is option C.C.W

Test: Adrenal, Thymus & Pineal Gland - Question 25

Immuno competent process of T–lymphocyte occur in :-

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 25

A T cell is a type of lymphocyte, which develops in the medulla region of the thymus gland (hence the name) and plays a central role in the immune response. T cells can be distinguished from other lymphocytes by the presence of a T-cell receptor on the cell surface. T cell differentiation continues even after they have left the thymus.

Test: Adrenal, Thymus & Pineal Gland - Question 26

What form does the thymus gland have?

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 26
  • The thymus gland is lobe-shaped. It functions as an essential lymphatic organ.
  • Between the lungs and behind the sternum is where the thymus is situated. Thymosin, a peptide hormone, is released by it.
  • The thymus gland supports the development of T-lymphocytes, sometimes referred to as T-cells, which are specialized white blood cells.
  • The thymus gland receives lymphocytes from the bone marrow, which are white blood cells.
  • The lymphocytes in the thymus mature into particular T-cells.
  • Before entering circulation, T-cells are in the process of development.
  • They travel to the lymph nodes, which are cellular collections, and other organs of the lymphatic system, where they support the immune system’s defense against disease and infection.
Test: Adrenal, Thymus & Pineal Gland - Question 27

When the primary sexual organ does not develop, puberty may appear due to :-

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 27

During normal human sexual development the adrenal gland undergoes a maturational process, termed adrenarche, which results in increased adrenal secretion of androgens and estrogens. Adrenarche begins several years before the onset of gonadal maturation and correlates with the appearance of the adrenal reticular zone. In normal puberty, adrenarche and gonadarche (gonadal maturation) are closely linked, but in pathological situations adrenarche can occur without gonadarche, and gonadarche without adrenarche.

Test: Adrenal, Thymus & Pineal Gland - Question 28

Melatonin is secreted by-

[CBSE-2000]

Test: Adrenal, Thymus & Pineal Gland - Question 29

M S H is secreted by in human-

[CBSE-2000]

Detailed Solution for Test: Adrenal, Thymus & Pineal Gland - Question 29

Middle lobe of pituitary secretes MSH(melanocyte stimulating hormone) that controls the synthesis of melanin granules in the chromatophores.

Test: Adrenal, Thymus & Pineal Gland - Question 30

Thymosin stimulates :-

[RPMT-2000]

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