Chapter - 15 - Homeostasis - 1

Chapter - 15 - Homeostasis - 1

1. The more concentrated environment is termed as:

a) Isotonic
b) Hypertonic
c) Hypotonic
d) Anisotonic

2. Mango plant is

a) Xerophyte
b) Hydrophyte
c) Mesophyte
d) Hydrophyte and Mesophyte

3. The excretory system of planaria called:

a) Protonephridium
b) Nephron
c) Metanephridium
d) Nephridium

4. In urea cycle one molecule of Amonia and one molecule of CO₂ combine with one molecule of ornithine to form:

a) Arginine
b) Citrulline
c) Urea
d) Arginosuccinate

5. Unlike an earthworm’s metanphridia in mammalian nephrone

a) Is intimately associated with a capillary network.
b) Filters blood instead of coelomic fluid.
c) Form urine by changing the composition of fluid inside the tubule.
d) Function in both osmoregulation and excretion of nitrogenous wastes.

6. Which process in the nephrone is least selective:

a) Reabsorption
b) Secretion
c) Filteration
d) Transport across the epithelium of a collecting duct

7. Malpighian tubules are excretory organs found in:

a) Vertebrate
b) Annelids
c) Insects
d) Flatworms

8. Amonia is secreted by most:

a) Bony fishes
b) Adult Amphibians
c) Organism that produce shelled eggs.
d) Insect

9. The vertebrate liver function in all the following regulatory process except:

a) Osmoregulation by variable excretion of salts.
b) Energy reserves in the formation of glycogen.
c) Detoxification of harmful chemicals.
d) Production of Nitrogenous wastes.

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