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1. Malpighian tubules are
A. Excretory organs of insects
B. Excretory organs of frogs
C. Respiratory organs of insects
D. Endocrine glands of insects
2. Animals which excrete urea produced during metabolism of amino acids are
A. Ureotelic
B. Aminotelic
C. Uricotelic
D. Ammonotelic
3. In Amoeba, osmoregulation occurs by
A. Contractile vacuole
B. Hyaloplasm
C. Ectoplasm
D. Pseudopodia
4. Which one of the following options shows a correct matching pair?
A. Frog - Uricotelic
B. Man - Ureotelic
C. Fish - Uricotelic
D. Birds - Ammonotelic
5. Which of the following is not a nitrogenous waste?
A. Purines
B. Allantoin
C. Citrulline
D. Creatinine
6. The following substances are the excretory products in animals. Choose the least toxic from among them.
A. Carbon dioxide
B. Ammonia
C. Uric acid
D. Urea
7. A terrestrial animal must be able to
A. Excrete a large amount of water
B. Excrete a large amount of salts in urine
C. Actively pump salts out through the skin
D. Conserve water
8. Which of the following is common to the kidneys and the skeleton in mammals?
A. Pelvis
B. Medulla
C. Cortex
D. Radius
9. The renal corpuscle can be divided into
A. Arteriole and glomerulus
B. Arteriole and Bowman's capsule
C. Bowman's capsule and glomerulus
D. Afferent and efferent arterioles
10. The proximal convoluted tubule (PCT) is lined with
A. Cuboidal epithelium
B. Columnar epithelium
C. Simple ciliated brush border epithelium
D. Simple cuboidal brush border epithelium
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