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.
Study the following list of deficiency symptoms in animals. Use it to answer the question below
I. Loss of appetite and weight; II. Delayed wound healing; III. Rickets; IV Sterility in animals
V Failed blood clotting; VI. Night blindness
Which of the following deficiencies is caused by a lack of vitamin A
I
III
V
VI
Correct answer is D
No explanation has been provided for this answer.
Which of the following solutions will induce the condition shown in the diagram?
Hypertonic solution
Hypotonic solution
isotonic solution
Distilled water
Correct answer is B
No explanation has been provided for this answer.
The condition shown in the above diagram is due to
conversion of starch to sugar
conversion of sugar to starch
excess water in structure labelled I
presence of carbondioxide in the structure labelled I
Correct answer is C
No explanation has been provided for this answer.
Which of the labelled structures in the diagram will shrink when plasmolysis occurs?
I
II
III
IV
Correct answer is A
No explanation has been provided for this answer.
I, II and III only
I, II, III and VI
I, II, V and VI
I, II, III, and IV
Correct answer is B
No explanation has been provided for this answer.