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.
What is name of the respiratory organ of the crab?
Tubules
Trachaea
Spiracles
Lungs
Gills
Correct answer is D
A branchiostegal lung is a respiration organ used by some air-breathing arthropods.
It is one of the most significant adaptations of some crabs and hermit crabs such as the coconut crab to their terrestrial habitats.
The rate of transpiration of a leafy shoot would be highest under
damp, cold, still air
damp, warm, moving air
dry, warm, moving air
dry, cold, moving air
dry, warm, still air
Correct answer is C
No explanation has been provided for this answer.
renin
amylase
lipase
lactase
pepsin
Correct answer is E
There are two common ways of achieving hydrolysis of milk proteins. You can either boil in a strong acid/ base for a very long time, or use an enzyme like PANCREATIC PROTEASE to simulate hydrolysis naturally. Pepsin is an example of pancreatic proteases.
Clinostat
Manometer
Porometer
Potometer
Photometer
Correct answer is A
Clinostat : A device used in experiments to test the influence of gravity on the growth movements of plants (see geotropism).
Spirogyra reproduces vegetatively by
spore production
fragmentation
multiple fission
budding
binary fission
Correct answer is B
No explanation has been provided for this answer.