Biology Past Questions and Answers

(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

(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.

(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

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

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