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.
An evidence of the occurrence of photosynthesis in an experiment is the?
release of carbon (IV) oxide
release of oxygen
formation of water molecules
formation and release of fructose
Correct answer is B
No explanation has been provided for this answer.
In which of the following structures is simple sugar produced?
Vacuole
Cytoplasm
Chloroplast
Cell wall
Correct answer is A
No explanation has been provided for this answer.
The diagrams below are illustrations of two different cells involved in biological processing in mammals. Study them and answer this question.
23 and 23
23 and 46
46 and 23
46 and 46
Correct answer is A
No explanation has been provided for this answer.
The diagrams below are illustrations of two different cells involved in biological processing in mammals. Study them and answer this question.
Which of the following statements about P and Q is correct?
Both cells are structures for asexual reproduction
Both cells normally belong to the same individual
Both cells are found in plants
The union of both cells gives rise to a new mammal
Correct answer is D
P - sperm cell:
III. Nucleus IV. Mitochondria
Q- Egg cell:
I. Nucleus II. Cytoplasm.
Sperm-egg fusion is a cell-cell membrane fusion event essential for the propagation of sexually reproducing organisms.
The diagrams below are illustrations of two different cells involved in biological processing in mammals. Study them and answer this question.
Which parts of P and Q fuse to complete the biological process?
III and I
IV and I
III and II
IV and II
Correct answer is A
P is a sperm cell whose nucleus (iii) then fuses with the egg plasma membrane (i) of the ovum (Q) and injects its nucleus and other organelles into the egg cytoplasm.