How well do you understand living things and their vital processes? Whether you are preparing for JAMB, WAEC, NECO and Post-UTME, these Biology past questions and answers cover such subjects as the chemistry of life, botany, evolution, genetics, ecology etc to help you know what to expect, improve your speed and confidence and be really prepared for the actual aptitude test.
A high concentration of auxin in the root will
inhibit growth
stimulate growth
not affect growth
cause the root to rot
reduce water absorption
Correct answer is A
- High concentration of auxin inhibits the growth of the primary root.
- Stops cell elongation of the root
The early removal of the pituary gland in animals may cause
cessation of growth
gigantism
poor mental development
goitre
inability to digest food
Correct answer is A
No explanation has been provided for this answer.
Filtered blood from the kidney is carried back to the circulatory system through the
hepatic portal vein
renal artery
renal vein
pulmonary vein
vena cava
Correct answer is C
No explanation has been provided for this answer.
The malpighian tubule plays a major role in
inspiration
digestion
secretion
reproduction
excretion
Correct answer is E
No explanation has been provided for this answer.
Which of the following structures is associated with respiration in insects?
Air sac
Spiracle
Lung
Alveolus
Gill
Correct answer is B
No explanation has been provided for this answer.