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.
Use the list of ecological constituents below to answer the question below
1. Mango
2. Spear grass
3. Goat
4. Sheep
5. Temperature
6. Beans
7. Rock
8. Water
a population
a community
an ecosystem
a niche
Correct answer is B
A community is a group or association of populations of two or more different species occupying the same geographical area and in a particular time.
The process of soil erosion is usually from
rill → sheet → gully
gully → rill → sheet
sheet → guly → rill
sheet → rill → gully
rill → gully → sheet
Correct answer is D
No explanation has been provided for this answer.
Washing away of humus from the soil surface
reducing of soil aeration by pressure
soil erosion by means other than rainfall
loss of organic matter due to exposure to direct sunlight
washing out chalk and limestone from upper layers of by heavy rains
Correct answer is A
No explanation has been provided for this answer.
Denitrifying bacteria in nature liberate gaseous nitrogen directly from
ammonium salts
soil nitrates
thunderstorms
soil nitrites
plant and animal proteins
Correct answer is B
No explanation has been provided for this answer.
humus, clay, silt, sand, stones
humus, silt, clay, sand, stones
humus, clay,silt, stones, sand
humus, sand, silt, clay, stones
clay, humus, silt, sand, stones
Correct answer is A
No explanation has been provided for this answer.