12th Class Biology MCQs Quiz 2 pdf download Homeostasis

MCQs Biology F.Sc. Part 2 (2nd Year)
Chapter No.15
HomeoStasis

91. The greater the demand of conserving water, the greater would be the number of:

(A) Juxta-medullary nephrons
(B) Cortical nephrons
(C) Capillaries of glomerulus
(D) Both (A) and (B)

Answer:
(A) Juxta-medullary nephrons

92. Each kidney is enclosed by a thin membranous covering called:

(A) Peritonium
B) Peritreme
(C) Perizonium
D All

Answer:
(A) Peritonium

93. Ph of human urine is

(A) 7.4
(B) 3.5
(C) 5.00
(D) 8.00

Answer:
(C) 5.00




94. The hormone which increases the reabsorption of calcium ions in nephron is:

(A) Aldosterone
(B) Parathormone
(C) Anti-diuretic
(D) Vasopression

Answer:
(B) Parathormone

95. The process by which some poisonous substances are secreted from peritubular capillaries into nephric filtrate is termed as:

(A) Tubular reabsorption
(B) Tubular secretion
(C) Counter-current exchange
(D) None of these

Answer:
(B) Tubular secretion

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