MCQ’S ON UREOTELISM
1. In the urine of frog, the main nitrogenous waste product is
(a) allantoin
(b) urea
(c) uric acid
(d) ammonia
Answer: (b)
2. In ureotelic animals,
(a) urine is passed out in form of solution of ammonia
(b) urine is passed out in form of solution of urea
(c) urine is passed out in form of amino acids
(d) urine is passed out in none of these forms
Answer: (b)
3. For urea formation, the correct order of ornithine cycle is. Ornithine ________, ________
(a) urinine, arginine
(b) arginine, urinine
(c) citrulline, arginine
(d) arginine, citrulline
Answer: (c)
4. Who discovered the Ornithine cycle?
(a) Bowman
(b) Krebs and Hanseliet
(c) Krebs
(d) Malpighi
Answer: (b)
5. The main nitrogenous waste in ___________ is uric acid
(a) man
(b) fishes
(c) birds
(d) frog
Answer: (c)
6. The urea in hypertonicity is retained in
(a) birds
(b) man
(c) amphibians
(d) elasmobranch
Answer: (d)
7. This is a metabolic waste as a result of protein metabolism
(a) ammonia, urea and creatinine
(b) ammonia, urea and alanine
(c) nitrogen, oxygen and urea
(d) carbon dioxide, urea and ammonia
Answer: (a)
8. The least toxic excretory material is
(a) urea
(b) all are equally toxic
(c) ammonia
(d) uric acid
Answer: (d)
9. The yellow colour is imparted to the vertebrate’s urine because of
(a) melanin
(b) uric acid
(c) urochrome
(d) cholesterol
Answer: (c)
10. This amongst the following is an excretory structure
(a) pinacocyte
(b) solenocyte
(c) choanocyte
(d) archeocyte
Answer: (b)
