NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
JANUARY/FEBRUARY 2018 EXAMINATION

COURSE CODE: BIO306

COURSE TITLE: GENERAL PHYSIOLOGY II

CREDIT UNITS: 2

TIME ALLOWED: 2 Hours

 INTRUCTION: Answer question ONE (1) and any other THREE (3) questions

1a. Give an account of the nature and functions of hormones. (7 marks)

  b. Differentiate between transpiration and evaporation. (7 marks)

  c. Outline the significance of the following:

 (i) diffusion (5 marks)

      (ii) osmosis (6 marks) 

2a. Enumerate the need for osmoregulation in animals. (5 marks)

  b. Give a detailed description of how the following are transported in plants.

      (i) water (5 marks)

      (ii) food materials (5 marks)

3a. Outline the common defects of the eye. (3 marks)

  b. Describe the mechanism of hearing (4 marks)

   c. Describe the relationship between osmotic equilibrium and ionic composition of marine animals. (8 marks).  

4. Reflex response is applied in various ways in our daily activities. Discuss using relevant examples (15 marks)

5a. Define the term guttation. (3 marks)

  b. Give a detailed account of the perception of body balance (6 marks)

  c. Write short notes on the following:

           (i) Chorion (3 marks)  

          (ii) Allantois (3 marks)