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Excretory Products and their Elimination · Question 49

AIPMT 2004MCQEasy📈 Topic in 25% papers+4−1
1

Uricotelism is found in

  1. mammals and birds
  2. fish and fresh water protozoans
  3. birds, land reptiles and insects
  4. frogs and toads

Answer

(3) birds, land reptiles and insects

Solution

As per NCERT, reptiles, birds, land snails and insects excrete nitrogenous wastes as uric acid in the form of pellet or paste with minimum loss of water; they are called uricotelic animals.

Mammals and frogs/toads are ureotelic; most bony fishes and freshwater protozoans are ammonotelic.

Answer: (3)

AIPMT 2004

Keep practising — Excretory Products and their Elimination

2

If Henle's loop were absent from mammalian nephron, which one of the following is to be expected?

  1. There will be no urine formation.
  2. There will be hardly any change in the quality and quantity of urine formed.
  3. The urine will be more concentrated.
  4. The urine will be more dilute.
AIPMT 2003
3

Conversion of ammonia to urea is done by

  1. ornithine cycle
  2. arginine cycle
  3. fumaric cycle
  4. citrulline cycle
AIPMT 2000
4

Concentration of urine depends upon which organ?

  1. Bowman's capsule
  2. Length of Henle's loop
  3. PCT
  4. Network of capillaries arising from glomerulus
AIPMT 2000
5

Which pair is correct?

  1. Sebum = sexual attraction
  2. Saliva = sense of food taste
  3. Sweat = temperature regulation
  4. Humerus = Hind leg
AIPMT 2000

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