JAMB UTME - Biology - 1986 | Green Bridge CBT

If a woman who is a carrier of sickle cell trait (AS) married a man who is a sickler (SS) and they had four children, how many of them would be normal?

Three

Two

One

None Correct answer

Answer Details

Read lesson note on Heredity (JAMB)

Heredity

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Question 24 Report

Incomplete metamorphosis occurs in the

butterfly

grasshopper Correct answer

mosquito

housefly

Answer Details

Read lesson note on Variety Of Organisms (JAMB)

Read lesson note on Biological Fuel Generation (WAEC)

Read lesson note on Physiological Variations (WAEC)

Variety Of Organisms

Biological Fuel Generation

Physiological Variations

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Question 25 Report

The main function of the structure labelled 2 is to

protect the inner parts of the seed

nourish the embryo and the growing plan Correct answer

keep the inner parts moist

maintain the shape if the seed

Answer Details

Read lesson note on Nutrition (JAMB)

Nutrition

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Question 26 Report

Gestation in mammals is the period

required for growth after birth

between the formation of the foetus and birth Correct answer

of development from zygote to birth

before the formation of the zygote

Answer Details

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Question 27 Report

Oxygen liberated during photosynthesis has been demonstrated to come from

carbondioxide

air

water Correct answer

chlorophyll

Answer Details

Read lesson note on Properties And Functions Of The Living Cell (WAEC)

Properties And Functions Of The Living Cell

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Question 28 Report

The severe deficiency of vitamin C leads to

Kwashiokor

beriberi

pellagra

scurvy Correct answer

Answer Details

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Question 29 Report

Which of the following statement is NOT correct with respect to inhalation in mammals? The

intercostal muscles contract

diaphragm is raised Correct answer

ribs are raised

Pressure of the thoracic cavity decreases

Answer Details

Read lesson note on Respiratory System (WAEC)

Respiratory System

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Question 30 Report

The swollen shoot disease of cocoa tree is caused by a

virus Correct answer

fungus

bacterium

protozoan

Answer Details

Read lesson note on Resources To Be Conserved: Soil, Water, Wildlife, Forest And Minerals (WAEC)

Resources To Be Conserved: Soil, Water, Wildlife, Forest And Minerals

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Question 31 Report

Which of the following is NOT true of spirogyra?

Reproduces by conjugation

Reproduces by fragmentation

Consist of branched filaments Correct answer

Consist of unbranched filaments

Answer Details

Read lesson note on Forms In Which Living Cells Exist (WAEC)

Forms In Which Living Cells Exist

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Question 32 Report

In the mammalian skin, melanin and keratin are contained in the

sebaceous gland

sweat gland

subcubaneous layer

malpighian layer Correct answer

Answer Details

Read lesson note on Tissues And Supporting Systems: (WAEC)

Tissues And Supporting Systems:

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Question 33 Report

In an agricultural ecosystem, the biotic component consists of

crop, pest and beneficial insects Correct answer

crops, temperature and humidity

pests, beneficial insects and water

crops, water and soil

Answer Details

Read lesson note on Ecology Of Population (WAEC)

Read lesson note on Resources To Be Conserved: Soil, Water, Wildlife, Forest And Minerals (WAEC)

Read lesson note on Soil (WAEC)

Ecology Of Population

Resources To Be Conserved: Soil, Water, Wildlife, Forest And Minerals

Soil

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Question 34 Report

For effective functioning of a bird's quill feather, hooks fit on the ridge of the

Vane

rachis

barbules Correct answer

barbs

Answer Details

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Question 35 Report

Deamination occurs in the

kidney

pancreas

spleen

liver Correct answer

Answer Details

Read lesson note on Animal Nutrition (WAEC)

Read lesson note on Organization Of Life (WAEC)

Read lesson note on Blood Transfusion (WAEC)

Read lesson note on Excretory Systems And Mechanisms; Types Of Excretory Systems (WAEC)

Animal Nutrition

Organization Of Life

Blood Transfusion

Excretory Systems And Mechanisms; Types Of Excretory Systems

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Question 36 Report

The male cockroach differs from the female by having

mandibles

a pair of style Correct answer

spiracles

a pair of cerci

Answer Details

Read lesson note on Heredity (JAMB)

Heredity

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Question 37 Report

Which of the following lacks chaetae, tentacles and antennae?

Snail

Crab

Millipede Correct answer

Earthworm

Answer Details

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Question 38 Report

Which of these disease CANNOT be prevented by immunization?

Poliomyelitis

Tuberculosis

Cholera

onchocerciasis Correct answer

Answer Details

Read lesson note on Properties And Functions Of The Living Cell (WAEC)

Properties And Functions Of The Living Cell

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Question 39 Report

Which of these is a trace element?

Iron

Copper Correct answer

Calcium

Sulphur

Answer Details

Read lesson note on Organization Of Life (WAEC)

Organization Of Life

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Question 40 Report

Which of the following elements is essential for the formation of haemoglobin?

Sodium

Potassium

Calcium

Iron Correct answer

Answer Details

Read lesson note on DNA Structure And Replication, RNA Transcription (WAEC)

DNA Structure And Replication, RNA Transcription

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Question 41 Report

Which of the following is an example of discontinuous variation?

skin colouration

left handedness Correct answer

body weight

Height

Answer Details

Read lesson note on Heredity (JAMB)

Heredity

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Question 42 Report

In an ecosystem, animals which feed directly on plants are called

secondary consumers

primary consumers Correct answer

producers

predators

Answer Details

Read lesson note on Animal Nutrition (WAEC)

Read lesson note on Food Webs And Trophic Levels (WAEC)

Animal Nutrition

Food Webs And Trophic Levels

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Question 43 Report

Sample of different soil types are packed in glass tubes whose lower ends are plugged with cotton wool, if these tubes are suspended in a trough of water, water will rise highest after a few hours in

sand Correct answer

loamy

clay

humus

Answer Details

Read lesson note on Transport (WAEC)

Read lesson note on Animal Nutrition (WAEC)

Read lesson note on Soil (WAEC)

Transport

Animal Nutrition

Soil

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