BIO306 : GENERAL PHYSIOLOGY II (2014)

NATIONAL OPEN UNIVERSITY OF NIGERIA

14/16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS

SCHOOL OF SCIENCE AND TECHNOLOGY

MARCH/APRIL 2014 EXAMINATION

COURSE CODE: BIO 306

COURSE TITLE: GENERAL PHYSIOLOGY II

TIME ALLOWED: 2 HOURS

INSTRUCTION: ANSWER ANY FOUR QUESTIONS

1ai. What do you understand by the term osmoregulation.

ii. Distinguish between osmoconformers and osmosregulators.

b. What is the significance of the following?

(i) diffusion (ii) osmosis

2ai. Outline the factors affecting imbibitions.

ii. Describe the consequences of plasmolysis.

b. Some factors affect the rate of water absorption in plants. Discuss

3ai. Define excretory organ.

iiEnumerate the functions of the mammalian kidney.

bi. Explain howterrestial animals overcome the problems of water loss and water gains.

ii.Writeshort notes onthe following nitrogenous waste products:

(i) urea (ii) ammonia (iii) uric acid

4ai. List the factors affecting stomatal opening and closing.

ii. Describe the common defects of the eye.

bi. Explain the need for osmoregulation in animals.

ii. Describe the relationship between osmotic equilibrium and ionic composition of marine animals.

5ai. Outline the kinds of water available to plants in the soil.

ii. Differentiate between transpiration and evaporation.

b. Briefly explain the following:

(i) perception of body balance (ii) mechanism of hearing

6ai. Enumerate the osmotic challenges facing animals in the freshwater environment face.

ii. Highlight the factors affecting evaporative water loss in terrestrial animals.

b. Briefly describe any four urinary disorders you know.

For the 2015 – till date past questions for this course CLICK HERE

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