Waec Biology 2006 Past Questions and Answers

Question 66:

• WAEC 2006

(a)(i) List the functions of a typical foliage leaf.
(ii) Name three types of leaf modifications giving one example in each case.
(b) Make a diagram 8 - 10cm long, of the female reproductive part of a flowering plant and label fully.
(c) Name three plants that are pollinated by insects.

Question 67:

• WAEC 2006

(a(i) Describe three features of a typical vertebra.
(ii) Name three types of skeletons found in animals, and in each case name one animal which possesses it.
(b)(i) State four functions of the mammalian skeleton.
(ii) Name three types of skeletons found in animals, and in each case name one animal which possesses it.

Question 68:

• WAEC 2006

(a) Write short notes on each of the following: (i) ecosystem; (ii) population; (iii) ecological succession in plants.
(b) List five ways by which nitrogen can be made available to the soil for plant growth.

Question 69:

• WAEC 2006

(a) Explain the term, conservation of natural resources.
(b)(i) List seven methods of soil conservation.
(ii) Name four other natural resources that may be conserved.
(c) State three factors which negatively affect conservation of forest in West Africa.
(d) Describe what happens during the denitrification stage of the nitrogen cycle.

Question 70:

• WAEC 2006

(a) What is a hormone?
(b) Outline the role played by adrenaline in an emergency situation.
(c) In a tabular form, list five differences between hormonal co-ordination and nervous co-ordination.
(d) Name three animal hormones and two plant hormones.