Biology Practice Question and Answer

Q:

The epithelial tissue covers:

348 0

  • 1
    External surface of human body
    Correct
    Wrong
  • 2
    Internal surface of blood vessels
    Correct
    Wrong
  • 3
    Luminal surface of visceral organs
    Correct
    Wrong
  • 4
    All of these
    Correct
    Wrong
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Answer : 3. "Luminal surface of visceral organs"

Q:

If the head of cockroach is removed, it may live for few days because :

497 0

  • 1
    The supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen.
    Correct
    Wrong
  • 2
    The cockroach does not have nervous system.
    Correct
    Wrong
  • 3
    Head holds a small proportion of nervous system while restis situated along ventral part of its body
    Correct
    Wrong
  • 4
    The head holds 1/3rd of the nervous system while the rest is situated along dorsal part of its body.
    Correct
    Wrong
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Answer : 4. "The head holds 1/3rd of the nervous system while the rest is situated along dorsal part of its body."

Q:

Consider following features:

(a) Organ system level of organization

(b) Bilateral symmetry  
 (c) True coelomates with segmentation of body

Select the correct option of animal groups which possess all the above characteristics.

508 0

  • 1
    Annelida, Arthropoda and Chordata
    Correct
    Wrong
  • 2
    Annelida, Arthropoda and Mollusca
    Correct
    Wrong
  • 3
    Arthropoda, Mollusca and Chordata
    Correct
    Wrong
  • 4
    Annelida, Mollusca and Chordata
    Correct
    Wrong
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Answer : 1. "Annelida, Arthropoda and Chordata "

Q:

What is the effect of Oxytocin produced by hypothalamus?

425 0

  • 1
    Stimulates the synthesis and secretion of androgens
    Correct
    Wrong
  • 2
    Stimulates formation of milk in mammary glands
    Correct
    Wrong
  • 3
    Stimulates a vigorous myometrial contraction at the time of childbirth
    Correct
    Wrong
  • 4
    Stimulates synthesis of carbohydrates from non-carbohydrates in liver
    Correct
    Wrong
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Answer : 3. "Stimulates a vigorous myometrial contraction at the time of childbirth"

Q:

Which of the following is true about

Atrial Natriuretic Factor :

1) Peptide hormone 2) Increases blood pressure 3) Reduces blood pressure 4) Vaso constrictor 5) Cause vasodialation

434 0

  • 1
    1, 2 and 4 are true
    Correct
    Wrong
  • 2
    1,3 and 5 are true
    Correct
    Wrong
  • 3
    2 and 4 are true
    Correct
    Wrong
  • 4
    5 only is true
    Correct
    Wrong
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Answer : 2. "1,3 and 5 are true "

Q:

A fall in glomerular filtration rate (GFR) activates

797 0

  • 1
    Juxta glomerular cells to release renin
    Correct
    Wrong
  • 2
    Adrenal cortex to release aldosterone
    Correct
    Wrong
  • 3
    Adrenal medulla to release adrenaline
    Correct
    Wrong
  • 4
    Posterior pituitary to release vasopressin
    Correct
    Wrong
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Answer : 1. "Juxta glomerular cells to release renin"

Q:

What is the osmolarity(in mO smolL–1) in the outer cortex and inner medullary region?

414 0

  • 1
    300 and 900 respectively
    Correct
    Wrong
  • 2
    600 and 300 respectively
    Correct
    Wrong
  • 3
    1200 and 300 respectively
    Correct
    Wrong
  • 4
    300 and 1200 respectively
    Correct
    Wrong
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Answer : 4. "300 and 1200 respectively"

Q:

Which one is the first heart sound?

490 0

  • 1
    Lub during closure semilunar valves
    Correct
    Wrong
  • 2
    Lub during closure of atrio-ventricular valves
    Correct
    Wrong
  • 3
    Dub during closure of atrio- ventricular valves
    Correct
    Wrong
  • 4
    Dub during closure of semilunarvaleves
    Correct
    Wrong
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Answer : 2. "Lub during closure of atrio-ventricular valves"

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