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.
plasmolysis
diffusion
haemolysis
wilting
Correct answer is C
No explanation has been provided for this answer.
In plant cells, the role of the membrane is played by the
nucleolus
cell wall
cytoplasm
mitochondrion
Correct answer is B
No explanation has been provided for this answer.
The cytoplasm of the cell is considered a very important component because it
regulates the amount of energy in the cell
suspends all cell organelles
is the outermost part of the cell
is solely responsible for cell division
Correct answer is B
No explanation has been provided for this answer.
Which of the following is not a means of conserving natural resources?
Establishment of national parks
Selective logging
Building of dams
Bush burning
Correct answer is D
No explanation has been provided for this answer.
Viruses are economically important because they?
do not have cell structures
can only reproduce inside living cells
cause diseases in plants and animals
exist as crystals outside living cells
Correct answer is C
Plant viruses are of considerable economic importance because many of them infect crop and ornamental plants.
Numerous plant viruses are rodlike and can be extracted readily from plant tissue and crystallized.
Animal viruses of economic importance: Genetic variation, persistence, and prospects for their control.