Waec Biology 2005 Past Questions and Answers

Question 66:

• WAEC 2005

(a) (i) Define asexual reproduction.
(ii) Name two types of asexual reproduction which occur in animals giving one example in each case.
(b) In a tabular form outline four differences between sexual and asexual reproduction.
(c) Make a large, labelled diagram 8 - 10cm long of the human spermatozoon to show its structure.
(d) State one function each of any three organelles found in the spermatozoon.

Question 67:

• WAEC 2005

(a) Explain the following terms:
(i) trait
(ii) recessive gene
(iii) test cross
(iv) heterozygous
(b) How do you determine whether a man with blood group '0' and married to a woman with blood group 'AB' is the father of a child with blood group 'AB' born to them?
(c) (i) In rabbit brown hair is dominant over white hair colour. How could you determine that a brown coloured male rabbit is homozygous?
(ii) What is the difference between the chromosome number of a gamete and that of the body cell of the same organism?