JAMB UTME - Biology - 1980 | Green Bridge CBT

A mosquito which produces eggs which float, and whose larvae lie horizontal to the water surface, also rests at the angle on a vertical surface. This type of mosquito is

Aedes

Anopheles

Culex

Tiger mosquito

none of the above

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Question 7 Report

The filament of spirogyra were put into equal volumes of sugar solutions X and Y. After 5 minutes, filaments from solution X had their cells contents rounded up while those from Y were unaffected. The experiment shows that

solution X was stronger than Y

solution Y was stronger than X

Spirogyra used up the sugar in solution X

solution X is good for stimulating sexual reproduction in Spirogyra

solution Y was less contaminated than X

Answer Details

Read lesson note on Classification (WAEC)

Read lesson note on Cell Structure (WAEC)

Classification

Cell Structure

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Question 8 Report

A green plant growing in a compost pit is feeding

holozoically

parasitically

saprophytically

holophytically

in none of the above ways

Answer Details

Read lesson note on Modes Of Nutrition (WAEC)

Read lesson note on Co-ordination And Control (JAMB)

Modes Of Nutrition

Co-ordination And Control

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Question 9 Report

which part of the human brain is concerned with reflexes controlling the rate of heart beat and breathing?

Medulla

Cerebrum

Cerebellum

Pineal body

Olfactory lobe

Answer Details

Read lesson note on Nervous Coordination (WAEC)

Nervous Coordination

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Question 10 Report

Which of the labelled parts is the venga caval opening?

Answer Details

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Question 11 Report

In animals, cilia, flagella, pseudopodia and chaetae, can be used for

reproduction

fighting

attachment to plants

locomotion

locating sensation

Answer Details

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

Read lesson note on Movement (WAEC)

Forms In Which Living Cells Exist

Movement

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Question 12 Report

A fresh Kolanut weighing 1g was put into salt solution. After 3 hour, the kolanut weighed 1.2g. This simple experiment demonstration that

the salt solution is more concentrated that the cell sap of the kolanut

the cell sap of the kolanut is more concentrated than the salt solution

the salt solution has the same concentration as the cell sap of the kolanut

kolanut cell can multiply in water

the kolanut lost some water molecules to the salt solution

Answer Details

Read lesson note on The Cell And Its Environment: Physical And Biophysical Processes (WAEC)

The Cell And Its Environment: Physical And Biophysical Processes

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Question 13 Report

A student trying to find out the order in which organisms appear on a cleared plot is studying one of the following

Ecosystem

Food chain

Food web

Succession

Community

Answer Details

Read lesson note on Ecosystem (WAEC)

Ecosystem

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Question 14 Report

One of the following statement is NOT true of spirogyra

it is a simple multicellular plant

during conjugation, its gametes, which are structurally and physiologically similar, fuses to form a zygote

it possesses spiral chloroplast which enables the plant to photosynthesize

its cells are protected externally by layer of mucilage

there are pyrenoids along the chloroplast

Answer Details

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

Forms In Which Living Cells Exist

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Question 15 Report

A few grams of dried soil were first heated until red hot and then further heated until no more smoke was released. This experiment was to determine

amount of water in soil

percentage of water in soil

presence of humus in soil

resistance of laterities to heat

release of smoke from the soil

Answer Details

Read lesson note on Soil (JAMB)

Read lesson note on Humans And Environment (JAMB)

Soil

Humans And Environment

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Question 16 Report

The vacuole of a plant cell is

a large empty space

smaller than that of animal cell

filled with air

an ordinary vacuum

surrounded by a membrane

Answer Details

Read lesson note on Cell Structure (WAEC)

Cell Structure

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Question 17 Report

The lime water in container B turned milky because

carbon dioxide was produced by plant

during respiration carbon dioxide entered C

oxygen reacts with lime water to produce milkiness

soda lime did not remove carbon dioxide from air

the delivery tubes were not well connected

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Question 18 Report

The following are connected with the movement of a reflex action (1) Central nervous (2) Muscles (3) Skin (4) Sensory nerve (5) Motor nerve. Which of the following sequences indicates a correct path?

1-2-3-4-5

2-1-4-5-3

3-4-1-2-5

4-1-5-2-3

3-4-1-5-2

Answer Details

Read lesson note on Simple Measurement Of Ecological Factors (WAEC)

Read lesson note on Nervous Coordination (WAEC)

Read lesson note on Natural Habitats (JAMB)

Simple Measurement Of Ecological Factors

Nervous Coordination

Natural Habitats

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Question 19 Report

If a baby is a female, her mother's ovum must have been fertilized by a sperm carry the chromosome

Answer Details

Read lesson note on Genetic Terminologies (WAEC)

Genetic Terminologies

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Question 20 Report

During thunderstorms the energy of lightning discharge causes

oxygen and nitrogen to combine

more carbon dioxide to be formed

nitrites to be converted to nitrates

nitrates to be converted to nitrogen

death

Answer Details

Read lesson note on Nitrogen Cycle (WAEC)

Nitrogen Cycle

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Question 21 Report

A potometer is used to determine the rate at which a shoot

respires

sucks air bubbles

loses weight

absorbs water

transpires

Answer Details

Read lesson note on Respiration (JAMB)

Read lesson note on Cellular Respiration (WAEC)

Respiration

Cellular Respiration

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Question 22 Report

Oxygen from the atmosphere reaches the mammalian blood stream through one of the path indicated below. Indicate the correct path, a = mouth, b = trachea, c = bronchiole, d = nostril, e = bronchus, f = alveoli

a → b → e → f → d

b → d → f → e → c

d → b → e → c → f

b → a → f → e → c

f → e → c → d → c

Answer Details

Read lesson note on Movement Of Substances Into And Out Of Cells (WAEC)

Read lesson note on Animal Nutrition (WAEC)

Read lesson note on Nucleic Acids (WAEC)

Read lesson note on Respiratory System (WAEC)

Movement Of Substances Into And Out Of Cells

Animal Nutrition

Nucleic Acids

Respiratory System

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Question 23 Report

Why is the part labelled 5 thicker than 6?

5 is the left ventricle and 6 the right ventricle

6 is the left ventricle and 5 the right ventricle

5 receives blood from the left auricle and 6 from the right

5 pumps blood round the body and 6 pumps blood into the lungs

5 deals with oxygenated blood and 6 deals with deoxygenated blood

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Question 24 Report

The tips of some rice seedlings were cut off while some were left intact. Both were covered with a container which had not only one small hole to allow light through. After twenty-four hours it was observed that

the cut tips was bent away from the light

the cut tips bent towards source of light

the intact tips bent away from the light

the intact tips bent towards the light

both tips bent away from light

Answer Details

Read lesson note on Excretory System (WAEC)

Read lesson note on Classification (WAEC)

Read lesson note on Protein Synthesis (WAEC)

Read lesson note on Reproduction (Courtship Behaviour In Animals) (WAEC)

Excretory System

Classification

Protein Synthesis

Reproduction (Courtship Behaviour In Animals)

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Question 25 Report

The center which controls respiratory activities the mammalian brain is the

cerebrum

olfactory lobe

pituitary organ

cerebellum

medulla

Answer Details

Read lesson note on Nervous Coordination (WAEC)

Nervous Coordination

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Question 26 Report

The part of the cell solely responsible for respiration is the

nucleus

nucleolus

mitochondria

golgi apparatus

endoplasmic reticulum

Answer Details

Read lesson note on Cellular Respiration (WAEC)

Read lesson note on Transport (JAMB)

Read lesson note on Irritability As A Basic Characteristic Of Protoplasm (WAEC)

Cellular Respiration

Transport

Irritability As A Basic Characteristic Of Protoplasm

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Question 27 Report

In Mucor or Rhizopus carbohydrate is absorb in the form of

starch

sucrose

glucose

glycogen

arabinose

Answer Details

Read lesson note on Structural Adaptation For Survival (WAEC)

Read lesson note on Nucleic Acids (WAEC)

Structural Adaptation For Survival

Nucleic Acids

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Question 28 Report

Water is required for seed germination to take place because it

activates the enzymes

softens the testa

liberates energy for growth

permits radicle growth

allow oxygen to diffuse into the seed

Answer Details

Read lesson note on Modes Of Nutrition (WAEC)

Read lesson note on Nutrient Cycling In Nature (WAEC)

Read lesson note on Integrated Water Resources Management (WAEC)

Modes Of Nutrition

Nutrient Cycling In Nature

Integrated Water Resources Management

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Question 29 Report

For pollination and fruit formation, the essential part(s) of the flower should be the

corolla

ovary

pistil (gynoecium)

ovules

receptacle

Answer Details

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

Read lesson note on Reproduction (JAMB)

Read lesson note on Internal Structure Of A Flowering Plant (JAMB)

Read lesson note on Irritability As A Basic Characteristic Of Protoplasm (WAEC)

Properties And Functions Of The Living Cell

Reproduction

Internal Structure Of A Flowering Plant

Irritability As A Basic Characteristic Of Protoplasm

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Question 30 Report

Which one of the following animals is NEVER a secondary host of tapeworms?

cow

Fish

Pig

Man

Dog

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Question 31 Report

Reserved food materials is

stored in the parts numbered 2 and 3

stored in the part numbered 3 only

stored in the part numbered 4 and 5

not concentrated in any particular part

found in all except 1

Answer Details

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Question 32 Report

The testa

is normally absent

is included in the part numbered (1)

is fused in the part numbered (3)

is the part numbered (1)

surrounds the part numbered (4) and (5)

Answer Details

Read lesson note on Nutrition (JAMB)

Read lesson note on Cell Structure (WAEC)

Nutrition

Cell Structure

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Question 33 Report

Which of the following food substances is digested in the stomach?

Carbohydrate

Fats and oil

Fats and proteins

Proteins

Carbohydrates and fats

Answer Details

Read lesson note on Alimentary System (WAEC)

Alimentary System

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Question 34 Report

if three 30 cm lengths of glass tubes are tightly packed with clay, sand and loamy soils respectively and then stood in a beaker of water for one week, the level of water will be

lowest in the tube with clay

the same in all tubes

lowest in the tube with loamy soil

highest in the tube with sandy soil

lowest in the tube with sandy soil

Answer Details

Read lesson note on Transport System (WAEC)

Read lesson note on Plant Nutrition (WAEC)

Read lesson note on Morphological Variations In The Physical Appearance Of Individuals (WAEC)

Transport System

Plant Nutrition

Morphological Variations In The Physical Appearance Of Individuals

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Question 35 Report

Biconcave lenses are used in the correction of an eye defect called?

myopia

colour blindnes

old age

hypermetropia

weakening of ciliary muscles

Answer Details

Read lesson note on Sense Organs (Nose, Tongue & Skin) (WAEC)

Sense Organs (Nose, Tongue & Skin)

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Question 36 Report

Which of the following organs produces bile?

Gall bladder

Pancreas

Spleen

Liver

Stomach

Answer Details

Read lesson note on Alimentary System (WAEC)

Alimentary System

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Question 37 Report

Leguminous plants, e.g Mucana, are usually planted in cultivated farmlands because they

enrich the soil with phoshates

provide animals with food

enrich the soil with organic nitrogen

protect the soil from being over-heated

protect the micro organisms in the soil

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 38 Report

The lime water in container C turned milky because

Carbon dioxide was produced by plant during respiration

Carbon dioxide entered through the filter pump

Oxygen reacts with lime water to produce milkiness

Soda lime did not remove carbon dioxide from the air

The delivery tubes were not well connected

Answer Details

Read lesson note on Application Of The Principles Of Heredity (WAEC)

Read lesson note on Nervous Coordination (WAEC)

Application Of The Principles Of Heredity

Nervous Coordination

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Question 39 Report

The joint between the atlas and axis vertebrae allows for

rotatory movement only

up and down or nodding movements only

rotatory and nodding movements

no movement at all

slight movement

Answer Details

Read lesson note on Co-ordination And Control (JAMB)

Co-ordination And Control

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Question 40 Report

A true fruit is formed from

a fertilized ovary and other floral parts

a fertilized ovary

a fertilized ovary and calyx

a fertilized ovary and fleshy receptacle

an unfertilized ovary and other floral part

Answer Details

Read lesson note on Regulation Of Internal Environment (WAEC)

Regulation Of Internal Environment

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Question 41 Report

Which of the following hormones is produced during fright or when agitated?

Insulin

Adrenalin

Thyroxine

Pituitrin

Progesterone

Answer Details

Read lesson note on Hormonal Coordination (WAEC)

Hormonal Coordination

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Question 42 Report

Which of the following spreads malaria in Nigeria?

Anopheles mosquito

Culex mosquito

Aedes mosquito

Tsetse fly

House fly

Answer Details

Read lesson note on Microorganisms Around Us (WAEC)

Microorganisms Around Us

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Question 43 Report

In the figure above the structure which prevents friction between the bones is

Answer Details

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Question 44 Report

In anaerobic respiration, glucose is converted to one of the following

Carbon dioxide and water

Carbon dioxide only

Carbon dioxide and alcohol

Alcohol and water

water and acetic acid

Answer Details

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Question 45 Report

Milk can be pasteurized by

the addition of common salt

boiling for one hour

heating to 75^oc for 20 minutes

the addition of vinegar

heating to 100^oc for 12 hours

Answer Details

Milk can be pasteurized by heating it to a specific temperature for a certain amount of time to kill bacteria that can cause diseases such as tuberculosis, diphtheria, and typhoid fever. One of the most common methods of pasteurization is heating the milk to 75°C for 20 minutes, which effectively destroys most of the harmful bacteria while preserving the milk's taste and nutritional quality. Therefore, the correct option is "heating to 75°C for 20 minutes".

Read lesson note on Classification (WAEC)

Read lesson note on Support And Movement (JAMB)

Classification

Support And Movement

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Question 46 Report

If the bark and phloem tissue of a woody shoot are peeled off by ringing, the whole plant will die eventually die because?

water does not reach the leaves

water and salts remained below the ring portion

there is a withdrawal of water from the root by soil

manufactured food does not reach the roots

the roots store too much water