Waec Biology 2016 Past Questions and Answers

Question 51:

• WAEC 2016

An organism at the start of a food chain which provides the total input energy into an ecosystem is the

A. Sun
B. Producer
C. Consumer
D. Decomposer

Question 52:

• WAEC 2016

(a) (i) List three forms in which living cells exist
(ii) Give one example each of the forms listed in 1 (a)(a)
(b) Make a diagram, 6 cm — 10 cm long, of a typical plant cell and label fully
(c) (i) In a tabular form, state three differences between a plant cell and animal cell.
(ii) State three similarities between a plant cell and animal cell.

Question 53:

• 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 54:

• 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 55:

• 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