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.
The two keys cation involved in the action potential of nervous transmissions are
Na+ an Fe2+
Mg2+ and K+
Na+ and K+
Fe2+ and Mg2+
Correct answer is C
No explanation has been provided for this answer.
| Ecological Zone | Temperature (oC) | Rainfall (mm) |
| I | 45 | 300 |
| II | 32 | 2000 |
| III | 30 | 2200 |
| IV | 15 | 800 |
From the table above which of the zones is likely to be desert?
I
II
III
IV
Correct answer is A
No explanation has been provided for this answer.
|
Ecological Zone |
Temperature (ºC) |
Rainfall (mm) |
|
I |
45 | 300 |
| II | 32 | 2000 |
| III | 30 | 2200 |
| IV | 15 | 800 |
From the table above high relative humidity will be expected in zones
I and III
I and IV
II and III
II and IV
Correct answer is C
No explanation has been provided for this answer.
which of the following will be the effect of waterlogged top soil on the roots of plants?
the waterlogged soil will stimulate rapid growth of roots
there will be abundant supply of air for the growth of roots
The roots will rapidly absorb water
There willl be an accumulation of plant nutrients
the roots will be starved of air
Correct answer is E
No explanation has been provided for this answer.
birth rate
density
mortality
frequency
dispersion
Correct answer is B
No explanation has been provided for this answer.