NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
JULY 2017 EXAMINATION

COURSE CODE: BIO306

COURSE TITLE: GENERAL PHYSIOLOGY II

CREDIT: 2 units

TIME ALLOWED: 2 Hours

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

1. (a) List the factors affecting stomatal opening and closing. (4 marks)

    (b) Describe the sequences of plasmolysis. (5 marks)   

    (c) Write short notes on the following nitrogenous waste products: 

          (i) urea (4 marks)

         (ii) uric acid (4 marks) 

    (d) In a tabular form, summarize the various processes through which terrestrial  

          animals overcome the problems of water loss and water gains. (8 marks)

2. Give a detailed description of ten (10) functions of blood. (15 marks)

3. Physical factors influence the rate of water absorption in plants - Discuss. (15 marks)

4. (a)  In a tabular form, distinguish between hormonal and Nervous Control Properties. (9 marks)

    (b) Write short notes on the following:

           i. Chorion (3 marks)  

          ii. Allantois (3 marks) 

5. (a) i. Outline the functions of the spinal cord. (3 marks)

         ii. Enumerate the functions of the mammalian kidney. (5 marks)

    (b) Briefly describe any four urinary disorders you know. (8 marks)