1992
Which listed element is a trace mineral needed in small amounts in human nutrition?
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1992 WAEC SSCE Biology Past Questions
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1992
Example Specimens List:A: AppleB: Legume Pod (e.g., Bean pod)C: CoconutD: TomatoE: Winged Seed (e.g., Maple seed)(a) (i) identify specimens A. B, C, D and E (ii) To which class of fruits does each specimen belong? (iii)…
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1992
Name one example of symbiotic relationship in animals
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1992
List three harmful effects of noise pollution.
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1992
Name the blood vessel that carries digested food to the liver.
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1992
Name the physical processes responsible for the following (a) entry of carbon dioxide into the leaf through the stomata (b) entry of soil water into the root hair (c) shrinkage of plant tissue in hypertonic sugar solutio…
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1992
Explain briefly how a large quantity of dead organic materials dumped into a river can be harmful to aquatic life.
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1992
List three uses of fibres to plants.
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1992
(a) State two ways in which the mesophyll layer of the leaf is adapted for photosynthesis (b) In the test for starch in a leaf, why is the leaf boiled in warm alcohol?
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1992
Study the diagram below and use it to answer questions (a)-(d)(a) Name the set-up illustrated in the diagram (b) What is the apparatus used for? (c) What is contained in the part of the apparatus labelled IV? (d) From wh…
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1992
What types of placentation are represented by diagrams I and II?
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1992
Which of the labellled parts represent the (a) female reproductive system (b) petal?
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1992
List of Specimens:Specimen A - Apple: An example of a pome, a type of simple fleshy fruit.Specimen B - Pea Pod: Representing legumes, a type of simple dry fruit that splits open at maturity.Specimen C - Maple Seed: A sam…
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1992
(a) Explain the following terms: (i) voluntary action. (ii) involuntary action.(b) State three functions each of: (I) insulin; (ii) auxins.(c) Describe an experiment to show that plant roots respond positively to gravit…
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1992
(a) Mention six ways by which the government is contributing towards self-sufficiency in food production(b) List five methods of conserving soil fertility.(c) Explain how three named agricultural practices can destroy th…
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1992
(a) Describe briefly the female reproductive system of a named mammal. (A diagram is essential).(b) List three differences between reproduction in mammals and in amphibians.(c) Describe the structure and function of the…
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1992
(a) List the principal sense organs in mammals and their functions.(b) (i) Describe the eye defect in which only distant objects are seen clearly. (ii) How can it be corrected? Illustrate your answer with labelled diagr…
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1992
The first scientist to describe the cell was
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1992
The conditions that ensure successful exchange of gases in multicellular organisms include the following except
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1992
Which of the following blood vessels carries oxygenated blood into the heart?
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