The metabolic reaction occurring in animal body produces certain nitrogen containing material as ammonia, urea, uric acid etc. These materials are toxic to the body so they must be removed. This elimination of nitrogenous waste products from the animal body to regulate the composition of the body fluids and tissues is called excretion. The excretory system in vertebrates is closely associated with parts of reproductive system, particularly in males, so excretory and reproductive system together form Urogenital system All parts of the excretory system except for a few structure s near the terminal duct opening are mesodermal in origin. So, take this quiz and increase your knowledge about the urogenital system of vertebrates.
1. Which one of the following is the most toxic excretory product?
A. Ammonia
B. Uric acid
C. Urea
D. Amino acid
2. Loop of Henle is found in ....
A. Uriniferous tubules of rabbit
B. Semniferous tubules of frog
C. Uriniferous tubules of frog
D. Seminiferous tubules of rabbit
3. Mesorchium is the mesentery which suspend......
A. Ovary
B. Testes
C. Uterus
D. Fallopian tube
4. Fallopian tube is a part of ....
A. Ureter
B. Vas deferens
C. Urethra
D. Oviduct
5. In rabbit, urea is a catabolic products of .....
A. Nucleic acid
B. Allantonic acid
C. Amino acid
D. Hippuric acid
6. In which of the following uterus is absent?
A. Rabbits
B. Dolphins
C. Rats
D. Aves
7. Female accessory glands are absent in all except ...
A. Scoliodon
B. Oryctolagus
C. Rana
D. Columba
8. What is the chemical nature of the white solid material usually found in pigeon's dropping?
A. Urea
B. Phosphate
C. Glucose
D. Uric acid
9. Which of the following is the the morphological and physiological unit of vertebrate kidney?
A. Nephridia
B. Seminiferous tubule
C. Ureter
D. Uriniferous tubule
10. Which organ is absent in dag fish?
A. Loop of Henle
B. Urinary bladder
C. Both of these
D. None of these
11. Trilobed kidney is a characteristic of .....
A. Aves
B. Reptiles
C. Mammals
D. Amphibians
12. Which gland helps in making the semen alkaline?
A. Prostate
B. Bartholine
C. Cowper's
D. Seminal vesicle
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