Tag: biology

Questions Related to biology

Select the correct matched pair.

(a) Pineal gland -   TSH
(b) Corpus luteum - Secretes oxytocin
(c) Interstitial cells - Erythropoietin
(d) Cholecystokinin - Stimulates pancreatic enzymesecretions
(e) Thyroxine - Adrenaline
biology control and coordination in living organisms different type of gland glands in humans coordination in human beings- chemical control

  1. a

  2. b

  3. c

  4. d

  5. e

Show answer
Correct Option: D
Explanation:

Cholecystokinin (CCK), formerly called as pancreozymin, is a digestive hormone released with secretin when food from the stomach reaches the duodenum. Cholecystokinin is secreted by cells of the upper small intestine. Its secretion is stimulated by the introduction of hydrochloric acid or fatty acids into the stomach or the duodenum. Cholecystokinin stimulates the gallbladder to contract and release stored bile into the intestine. It also stimulates the secretion of pancreatic juice.

Match the items in column 'A' with those given in column 'B'.
Column 'A'                               Column 'B'
A. ADH                                     i Pituitary
B. ACTH                                   ii Mineralocorticoid 
C. Aldosterone                          iii Diabetes mellitus
D. Insulin                                  iv Diabetes insipidus
E. Testosterone                          v Vasodilator
biology control and coordination in living organisms different type of gland glands in humans coordination in human beings- chemical control

  1. A- i, B- iv, C- ii, D- iii, E- v

  2. A- iv, B- ii, C- i, D- iii, E- v

  3. A- iv, B- i, C- ii, D- iii, E- v

  4. A- iv, B- i, C- iii, D- ii, E- iv

Show answer
Correct Option: C
Explanation:

Diabetes insipidus is a condition in which the kidneys are unable to prevent the excretion of water. The amount of water excreted in the urine is controlled by antidiuretic hormone (ADH). It is caused by a lack of ADH is called central diabetes insipidus. When it is caused by a failure of the kidneys to respond to ADH, the condition is called as nephrogenic diabetes insipidus. 

Adrenocorticotropic hormone (ACTH), also known as corticotropin, is a polypeptide tropic hormone produced and secreted by the anterior pituitary gland. 
Aldosterone is a steroid hormone (mineralocorticoid) produced by the outer section (zona glomerulosa) of the adrenal cortex in the adrenal gland. 
Diabetes mellitus is a disorder in which blood sugar (glucose) levels are abnormally high because the body does not produce enough insulin to meet its needs. 
Testosterone acts as an efficacious vasodilator in the human pulmonary vasculature, with dilatation observed at physiological concentrations in the male arterial resistance bed.

Which of the following statement are false/true?
(A) Calcitonin regulates the metabolism of calcium.
(B) Oxytocin stimulates contraction of the uterine muscle during birth.
(C) Grave's disease is caused by malfunctioning of the adrenal gland.
(D) ADH stimulates absorption of water and increases the urine production.
biology control and coordination in living organisms different type of gland glands in humans coordination in human beings- chemical control

  1. A and C are true B and D are false.

  2. A and B are true C and D are false.

  3. A and D are true B and C are false.

  4. A, B and C are true D only false.

Show answer
Correct Option: B
Explanation:

Calcitonin hormone stimulates temporary reduction in number and activity of osteoclasts and thereby reducing the blood calcium level to normal. Oxytocin facilitates uterine contractions to push the foetus downward which in turn stretches cervix more during childbirth. Oversecretion of thyroid hormones causes Graves’s disease. ADH stimulates absorption of water by collecting ducts resulting in production of concentrated urine and lower down the urine volume. Option B is correct answer.

Match the list I with list II and choose the correct answer.
List I                                                   List II
A. Adenohypophysis                 (1) Epinephrine 
B. Adrenal medulla                    (2) Somatotropin 
C Parathyroid gland                   (3) Thymosin 
D Thymus gland                         (4) Parathormone

biology control and coordination in living organisms different type of gland glands in humans coordination in human beings- chemical control

  1. A- 3, B- 1, C- 4, D- 2

  2. A- 1, B- 2, C- 3, D- 4

  3. A- 2, B- 1, C- 4, D- 3

  4. A- 4, B- 3, C- 2, D- 1

Show answer
Correct Option: C
Explanation:

The anterior lobe of the hypophysis (pituitary gland) is called as the adenohypophysis. This lobe contains cells, that produce prolactin, growth hormone (somatotropin), thyroid-stimulating hormone, follicle-stimulating hormone. 

Cells in the adrenal medulla synthesize and secrete epinephrine (also called adrenaline). 
Parathormone is a hormone that is made by the parathyroid glands and is critical to maintaining calcium and phosphorus balance. 
Thymosin is the hormone of the thymus, and it stimulates the development of disease-fighting T cells.

Salivary, tear, gastric and intestinal glands are examples of

biology endocrine system and adolescence different type of gland glands in humans coordination in human beings- chemical control

  1. Endocrine glands

  2. Exocrine glands

  3. Embryonic tissue

  4. Simple glands

Show answer
Correct Option: B
Explanation:

Exocrine glands are glands that produce and secrete substances onto an epithelial surface by way of a duct. Examples of Exocrine glands include sweat, salivary, mammary, ceruminous, lacrimal, sebaceous, and mucous. 

So, the correct option is B ( Exocrine gland )

Which among the following are ductless glands?

biology endocrine system and adolescence different type of gland glands in humans coordination in human beings- chemical control

  1. Exocrine gland

  2. Endocrine gland

  3. Mixed gland

  4. None of the above

Show answer
Correct Option: B

Endocrine glands put their secretions directly into

biology endocrine system and adolescence different type of gland glands in humans coordination in human beings- chemical control

  1. Ducts

  2. Blood

  3. Both

  4. None of the above

Show answer
Correct Option: B
Explanation:
  • Endocrine glands are glands of the endocrine system that secrete their products, hormones, directly into the blood rather than through a duct because endocrine glands lack ducts. Hence they are also called ductless glands.
  • The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus, and adrenal glands.
  • Hence endocrine glands put their secretions directly into the blood.
  • So, the correct answer is 'Blood'.

Hormones are produced by

biology endocrine system and adolescence different type of gland glands in humans coordination in human beings- chemical control

  1. Exocrine glands

  2. Endocrine glands

  3. Holocrine glands

  4. Apocrine glands

Show answer
Correct Option: B
Explanation:
A. Exocrine glands are the glands that secrete their products through ducts.
B. Endocrine glands are the ductless glands which secrete their products directly into the blood.
C. Holocrine glands secrete their products in the cytoplasm which are released due to rupture of cell membrane.
D. Apocrine glands are generally present in the skin and secrete their products on the skin surface.
Hormones are produced by endocrine glands. They are secreted in the blood stream from which they are carried to their target organs.
So, the correct answer is 'Endocrine glands'.

What is the other name of the endocrine glands?

biology endocrine system and adolescence different type of gland glands in humans coordination in human beings- chemical control

  1. Duct gland

  2. Normal

  3. Ductless gland

  4. Oesophagus

Show answer
Correct Option: C
Explanation:
  • Endocrine glands are glands of the endocrine system that secrete their products, hormones, directly into the blood rather than through a duct because endocrine glands lack ducts. Hence they are also called ductless glands.
  • The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus, and adrenal glands.
  • Hence the other name of the endocrine glands is ductless gland.
  • So, the correct answer is 'Ductless gland'.

Mucus, saliva, earwax, oil, milk, digestive enzymes, bile juice, tear, cortisol, androgen, HCL, thymosin, rennin, Pancreatic juice

How many of them are secreted by exocrine glands?

biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

  1. Twelve

  2. Three

  3. Eight

  4. Nine

Show answer
Correct Option: C
Explanation:
 Endocrine glands Thymosin is secreted by the thymus gland.Cortisol is secreted by the adrenal gland.Androgen is secreted by the adrenal gland.Renin is secreted by the kidney.
 Exocrine glands Saliva is secreted by the salivary gland.Pancreatic juice is secreted by the pancreas.Ear wax is secreted by the ceruminous gland.Tear is secreted by lacrimal gland.Milk is secreted by the mammary gland.Mucus is secreted by nasal mucosa as well as through bronchi and trachea.Oil is secreted by sebaceous gland.Bile is secreted by the liver.
  • HCl is secreted by parietal cells and digestive enzymes are secreted by different digestive organ (stomach and small intestine).
  • So, the correct answer is 'Eight'.