Waec Biology Past Questions and Answers

Question 1681:

• WAEC 2016

(a) In sequence, name the organs that constitute the alimentary canal of humans
(b) State: (i) three structural differences; (ii) three structural similarities; between the alimentary canal of a bird and human.
(c) Explain briefly how the dentition of herbivores is adapted for feeding
(d) State two roles of the pancreas in digestion

Question 1682:

• WAEC 2016

(a) (i) What is a habitat?
(ii) Explain briefly three roles of a decomposer in an ecosystem.
(b) Explain briefly energy flow in a freshwater habitat.
(c) (i) State three harmful effects or microorganisms to plants
(ii) State six beneficial effects of microorganism to humans.

Question 1683:

• WAEC 2016

(a) (i) Explain the term agglutination as used in blood transfusion.
(ii) The table below represents blood transfusion between blood donors and recipients.
Donor Recipient

A	B	AB	O
A
B
AB
O	+

(b) Explain how each of the following organisms are adapted for obtaining food.
(i) Mosquito larva
(ii) Dodder plant
(iii) Grasshopper

Question 1684:

• WAEC 2017

Which of the following groups of animals do not possess a nervous system?

A. Porifera
B. Cnidaria
C. Platyheminthes
D. Nematoda

Question 1685:

• WAEC 2017

Which of the following groups of animals do not possess a nervous system?

A. Porifera
B. Cnidaria
C. Platyheminthes
D. Nematoda