1998 - WAEC Biology Past Questions and Answers - page 2
11
Which of the following statements about the circulation of blood is not correct?
A
Deoxygenated blood flows in the heart through the vena cavae
B
Blood is pumped out of the heart through the aorta
C
Oxygenated blood from the lung; is carried to the left auricle
D
The oxygenated blood enters the lungs through the pulmonary vein
correct option: d
The right ventricle opens out into the pulmonary artery, which branches into two, one leading to the right lung and the other to the left lung.
12
A difference between the auricle and the ventricle of the mammalian heart is that the
A
ventricles carry deoxygenated blood
B
ventricles do not have outlets
C
auricles have no valves
D
walls of the ventricles are lese muscular then that of the auricles
correct option: e
Users' Answers & Comments13
Which of the following organism respires through the body surface
A
Man
B
Fish
C
Tridax
D
Amoeba
correct option: d
Users' Answers & Comments14
The stomata of a leaf performs the same function as
A
spiracles of insects
B
trachea of toads
C
pharynx of man
D
liver of man
correct option: a
Users' Answers & Comments15
Which of the following does not happen during inspiration?
A
intercostal muscles contract
B
Ribs move forward
C
Thoracic cavity increases
D
Diaphragm relaxes
correct option: d
Users' Answers & Comments16
Which of the these is not an excretory product of plant?
A
Tannin
B
Gum
C
Alkaloid
D
Sweat
correct option: d
Users' Answers & Comments17
Which of these is not a function of the kidney?
A
Production of urine
B
Maintenance of acid-base balance in the body
C
Osmo-regulation
D
Removal of urea
correct option: e
Users' Answers & Comments18
In which part of the kidney does ultrafiltration take place?
A
Bowman’s capsule
B
Distal convoluted tubule
C
Proximal convoluted tubule
D
Collecting duct
correct option: a
Users' Answers & Comments19
Which of the following organs is concerned with detoxication of harmful compounds?
A
Kidney
B
Lungs
C
Gall bladder
D
Liver
correct option: d
Users' Answers & Comments20
The hormone that promotes secondary sexual characteristics in females is
A
insulin
B
thyroxin
C
testosterone
D
oxytocin
correct option: e
Users' Answers & Comments