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 diagrams below are illustrations of organisms in a habitat. Study them and answer the question.
the producer in the diagram is
IV because it is the largest organism in the diagram
IV because it is the organism that receives the highest amount of sunlight
I because it uses sunlight to manufacture food
I because it contains the least amount of energy
Correct answer is C
No explanation has been provided for this answer.
The diagrams below are illustrations of organisms in a habitat. Study them and answer the question.
The feeding relationship between the organisms labelled III and IV in the diagrams is
predation
mutualism
parasitism
saprophytism
Correct answer is A
Predation in biology refers to the act of one organism (the predator) capturing, killing, and consuming another organism (the prey) for nourishment.
Which of the following organisms would be the producer in a food chain?
Goat
maize
man
bacterium
Correct answer is C
The producer in a food chain is the organism that produces its food directly from non-living sources (abiotic factors) through processes like photosynthesis or chemosynthesis. Among the options provided, the producer is "Maize." As a plant, maize is the producer in a food chain, serving as the primary source of energy for other organisms.
of consistent cool temperature
of availability of moisture
of the relatively constant day light
there are more plants
Correct answer is B
Decomposition is the process by which dead organic matter, such as dead plants and animals, is broken down and recycled back into the ecosystem as nutrients. The rate of decomposition is influenced by various factors, and in the tropical rainforest biome, the availability of moisture is a critical factor that accelerates decomposition.
Which of the following hormones is wrongly paired with its secretory organ?
oestrogen and ovary
Oxytocin and hypothalamus
adrenalin and kidney
insulin and pancreas
Correct answer is C
Adrenalin, also known as epinephrine, is not secreted by the kidney. It is secreted by the adrenal glands, specifically the adrenal medulla. The adrenal glands are small, triangular glands located on top of both kidneys. Therefore, the option 'Adrenalin and kidney' is incorrect
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