Biology 2009 Waec Past Questions and Answers

Question 16 :

• WAEC 2009

Which of the following features is not characteristic of arteries? Arteries

A. Possess valves at intervals throughout their length
B. Have thick, muscular and elastic walls
C. Carry blood away from the heart
D. Transport oxygenated blood with the exception of the pulmonary artery

Question 17 :

• WAEC 2009

A group of rats placed in an air-tight box for some hours died because they

A. Breathed in air containing nitrogen.
B. Produced carbon dioxide
C. Ran short of energy
D. Used up the available oxygen

Question 18 :

• WAEC 2009

Which of the following organisms have kidney as their excretory organ?

A. Fishes, amphibians, birds, man.
B. Fishes, amphibians, annelids, insects
C. Fishes, reptiles, birds, tapeworms
D. Fishes, protozoans, amphibians, man

Question 19 :

• WAEC 2009

Which of the statements below is valid?

A. The bird’s blood was always warmer than that of the lizard
B. The body temperature of the bird varied less than that of the lizard during changes in environmental temperature
C. The body temperature of the bird remained constant despite changes in environmental temperature
D. The body temperature of the lizard was always close to that of the environmental temperature

Question 20 :

• WAEC 2009

What physiological term can he used to
describe the regulation of the body
temperature of the lizard? '

A. Homeostasis
B. Homoithermy
C. Poikilothermy
D. Osmoregulation