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.
In which of the following does external fertilization take place?
toad
lizard
bird
cockroach
Correct answer is A
External fertilization is a mode of reproduction in which a male organism's sperm fertilizes a female organism's egg outside of the female's body. Many fish, amphibians, and other sexual aquatic animals use external fertilization (the exceptions are aquatic mammals, sharks, and some other special types of fish).
The movement response of a cockroach away from a light source is
negative phototaxism
positive phototaxism
negative phototropism
postive phototropism
Correct answer is A
No explanation has been provided for this answer.
The function of ribosomes in cells is
protein synthesis
starch synthesis
transporting materials
lipid storage
Correct answer is A
A ribosome is a cell organelle. It functions as a micro-machine for making proteins.
The theory of natural selection was postulated by
Gregor Mendel
Matthias Schleiden
Charles Darwin
Robert Hook
Correct answer is C
No explanation has been provided for this answer.
The hypha of rhizopus is said to be non-septate because it
does not contain chloropyll
has no cross wall
is vacuoled
stores oil globus
Correct answer is B
Hyphae that have walls between the cells are called septate hyphae; hyphae that lack walls and cell membranes between the cells are called nonseptate or coenocytic hyphae)