Home WAEC ANSWERS WAEC Biology 2022 Questions and Answers Expo (Essay & Objective)

WAEC Biology 2022 Questions and Answers Expo (Essay & Objective)

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WAEC
West Africa Examination council

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FRIDAY, 10th JUNE, 2022
Biology 2 (Essay)
09:30am – 11:30pm Biology 1 (Objective)
11:30am – 12:30pm
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BIOLOGY-OBJ
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BIOLOGY-ESSAY
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(5a)
a) Euphotic Zone. (Sunlight Zone).
b) Dysphotic Zone (Twilight Zone).
c) Aphotic Zone.
(5bi)
Population is defined as a group of individuals of the same species living and interbreeding within a given area.
(5b)
i) Pooter
ii) Sweep net
(5c)
i) Freezing.
ii) Canning.
iii) Smoking.
iv) Frying.
(5di)
Tropism is a growth toward or away from a stimulus. Common stimuli that influence plant growth include light, gravity, water, and touch. Common tropic responses in plants include phototropism, gravitropism, thigmotropism, hydrotropism, thermotropism, and chemotropism.
5dii)
i) Nastic response
ii) Tactic response
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(3a)
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(6a)
Singapore is a small country which is speculated to be not so great as other big countries
(6b)
When they are properly managed and being processed into finished goods, they can generate lots of income for the citizens.
(6c)
The writer considers knowledge as the most vital consideration for a nation to be great
(6d)
Good governance helps in provision of tranquil environment that enhances development of a nation.
(6e)
[Pick any Two]
(i) Presence of natural resources
(ii) Existence of finished products from the natural resources
(iii) Good governance
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(4bi)
(a)Organic evolution is a sum total of adaptive changes from pre-existing or old forms which have taken place over a long time and which result in diversity of form, structure, and functions among organisms.
(4bii)
(i) Charles Darwin
(ii) Carolus Linnaeus
(iii) Jean-Baptiste Lamarck
(4ci)
(i)They live in colonies or communities.
(ii)They undergo division of labour.
(4cii)
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(1ai)
A cell is the smallest unit that can live on its own and that makes up all living organisms and the tissues of the body. A cell has three main parts: the cell membrane, the nucleus, and the cytoplasm. The cell membrane surrounds the cell and controls the substances that go into and out of the cell.
 
(1c)
1.Nucleus
2Ribosomes.
3.Endoplasmic reticulum. …
4.Golgi apparatus. …
5Chloroplasts. …
6.Mitochondria.
 
(2c)
 
Milk teeth: is a temporary tooth of a young mammal especially one of the human dentition including four incisors, two canines, and four molars in each jaw which fall out during childhood and are replaced by the permanent teeth.
 
3ai) Ecological niche is a term for the position of a species within an ecosystem, describing both the range of conditions necessary for persistence of the species, and its ecological role in the ecosystem.
 
 
3ai) Ecological niche is a term for the position of a species within an ecosystem, describing both the range of conditions necessary for persistence of the species, and its ecological role in the ecosystem.
 
3aii) provide fruit, 
firewood, 
poles, 
organic matter for soil amendment, 
living fence post, 
shade, 
soil conservation 
cattle feed
 
(4c)
1.Climate Imbalance and Climate Change. 2.Deforestation also affects the climate in many ways. …
Increase in Global Warming. …
3.Increase in Greenhouse 4.Gas Emissions. …
Soil Erosion. …
Floods. …
5.Wildlife Extinction & Habitat Loss. …
6.Acidic Oceans. …
 
choose only 4
(4d)
Blood Transfusion 
 
A procedure in which whole blood or parts of blood are put into a patient’s bloodstream through a vein. The blood may be donated by another person or it may have been taken from the patient and stored until needed. Also called transfusion. A patient is given blood through an intravenous (IV) catheter in the arm. The blood may be donated by another person, or it may have been taken from the patient and stored until needed.
(3)
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(4)
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(5)
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