JAMB UTME - Biology - 1980 | Green Bridge CBT

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 Correct answer

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 12 Report

A green plant growing in a compost pit is feeding

holozoically

parasitically

saprophytically

holophytically Correct answer

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 13 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 Correct answer

5 deals with oxygenated blood and 6 deals with deoxygenated blood

Answer Details

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Question 14 Report

The conversion of excess amino acids into urea occurs in the

Kidney

pancreas

villi

liver Correct answer

spleen

Answer Details

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

Excretory Systems And Mechanisms; Types Of Excretory Systems

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Question 15 Report

Which one of the following parts of the mammalian body is most closely associated with the production of urine?

Malpighian capsule Correct answer

Urinary bladder

Ureter

Vas deferens

Urethra

Answer Details

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

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

Excretory Systems And Mechanisms; Types Of Excretory Systems

Properties And Functions Of The Living Cell

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Question 16 Report

A true fruit is formed from

a fertilized ovary and other floral parts

a fertilized ovary Correct answer

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 17 Report

Milk can be pasteurized by

the addition of common salt

boiling for one hour

heating to 75^oc for 20 minutes Correct answer

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 18 Report

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

Carbohydrate

Fats and oil

Fats and proteins

Proteins Correct answer

Carbohydrates and fats

Answer Details

Read lesson note on Alimentary System (WAEC)

Alimentary System

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Question 19 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 Correct answer

the roots store too much water

Answer Details

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Question 20 Report

The organ through which food and oxygen are supplied to the human embryo and which also prevents harmful materials from reaching the embryo is the

amnion

uterus

placenta Correct answer

umbilical cord

fallopian tube

Answer Details

Read lesson note on Adaptive Colouration (WAEC)

Adaptive Colouration

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Question 21 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 Correct answer

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 22 Report

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

X Correct answer

Answer Details

Read lesson note on Genetic Terminologies (WAEC)

Genetic Terminologies

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Question 23 Report

During excretion of urea there is also a corresponding re-absorption of water into the blood. This re-absorption takes place in the

uriniferous tubules Correct answer

Bowman's capsule

glomerulus

malpighian capsule

renal artery

Answer Details

Read lesson note on Excretory System (WAEC)

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

Excretory System

Excretory Systems And Mechanisms; Types Of Excretory Systems

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Question 24 Report

During thunderstorms the energy of lightning discharge causes

oxygen and nitrogen to combine Correct answer

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 25 Report

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 Correct answer

Culex

Tiger mosquito

none of the above

Answer Details

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Question 26 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 Correct answer

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 27 Report

Which of the following organs produces bile?

Gall bladder

Pancreas

Spleen

Liver Correct answer

Stomach

Answer Details

Read lesson note on Alimentary System (WAEC)

Alimentary System

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Question 28 Report

An organism X lives entirely on the waste products in another organism Y. In this association X is a

symbiont

commensal Correct answer

saprophyte

parasite

epiphyte

Answer Details

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Question 29 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 Correct answer

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 30 Report

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

myopia Correct answer

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 31 Report

In Mucor or Rhizopus carbohydrate is absorb in the form of

starch

sucrose

glucose Correct answer

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 32 Report

Human beings require vitamins in their diet because vitamins

contain carbohydrates and fats

prevent kwashiorkor

stimulate the alimentary canal

digest proteins in the body

influence many important chemical processes in the body Correct answer

Answer Details

Read lesson note on Nutrition (JAMB)

Nutrition

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Question 33 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 Correct answer

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 34 Report

The lime water in container B turned milky because

carbon dioxide was produced by plant Correct answer

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

Answer Details

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Question 35 Report

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

reproduction

fighting

attachment to plants

locomotion Correct answer

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 36 Report

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

Medulla Correct answer

Cerebrum

Cerebellum

Pineal body

Olfactory lobe

Answer Details

Read lesson note on Nervous Coordination (WAEC)

Nervous Coordination

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Question 37 Report

Some of the features of an animal are scales, teeth, nares and backbone. The animal is likely to be a

Toad

Bird

Lizard Correct answer

Rat

Bat

Answer Details

Read lesson note on Classification (WAEC)

Read lesson note on Physiological Variations (WAEC)

Classification

Physiological Variations

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Question 38 Report

Which of the labelled parts is the venga caval opening?

3 Correct answer

Answer Details

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Question 39 Report

The center which controls respiratory activities the mammalian brain is the

cerebrum

olfactory lobe

pituitary organ

cerebellum

medulla Correct answer

Answer Details

Read lesson note on Nervous Coordination (WAEC)

Nervous Coordination

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Question 40 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 Correct answer

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 41 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 Correct answer

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 42 Report

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

cow

Fish

Pig

Man Correct answer

Dog

Answer Details

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Question 43 Report

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

respires

sucks air bubbles

loses weight

absorbs water

transpires Correct answer

Answer Details

Read lesson note on Respiration (JAMB)

Read lesson note on Cellular Respiration (WAEC)

Respiration

Cellular Respiration

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Question 44 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 Correct answer

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 45 Report

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

Carbon dioxide and water

Carbon dioxide only

Carbon dioxide and alcohol Correct answer

Alcohol and water

water and acetic acid

Answer Details

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Question 46 Report

Reserved food materials is

stored in the parts numbered 2 and 3 Correct answer

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 47 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 Correct answer

Community

Answer Details

Read lesson note on Ecosystem (WAEC)

Ecosystem

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Question 48 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 Correct answer

Answer Details

Read lesson note on Cell Structure (WAEC)

Cell Structure

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Question 49 Report

The amount of water loss from a leaf can be detected using

lime-water

red litmus paper

blue litmus paper

blue cobalt chloride paper Correct answer

pink cobalt chloride paper

Answer Details

Read lesson note on Blood Transfusion (WAEC)

Read lesson note on Nucleic Acids (WAEC)

Blood Transfusion

Nucleic Acids

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Question 50 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 Correct answer

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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