JAMB UTME - Biology - 1980 | Green Bridge CBT

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 Ìdáhùn tó tọ́

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Simple Measurement Of Ecological Factors (WAEC)

Ka ìwé ẹ̀kọ́ nípa Nervous Coordination (WAEC)

Ka ìwé ẹ̀kọ́ nípa Natural Habitats (JAMB)

Simple Measurement Of Ecological Factors

Nervous Coordination

Natural Habitats

Wo Idahun

Ibeere 7 Ìròyìn

Below are some group of diseases. Which group of diseases is caused by bacteria?

Tuberculosis, smallpox

Gonorrhoea, measles

Tuberculosis, polio

Sleeping sickness, measles

Syphilis, gonorrhoea Ìdáhùn tó tọ́

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Resources To Be Conserved: Soil, Water, Wildlife, Forest And Minerals (WAEC)

Ka ìwé ẹ̀kọ́ nípa Microorganisms Around Us (WAEC)

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

Microorganisms Around Us

Wo Idahun

Ibeere 8 Ìròyìn

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 Ìdáhùn tó tọ́

umbilical cord

fallopian tube

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Adaptive Colouration (WAEC)

Adaptive Colouration

Wo Idahun

Ibeere 9 Ìròyìn

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

Toad

Bird

Lizard Ìdáhùn tó tọ́

Rat

Bat

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Classification (WAEC)

Ka ìwé ẹ̀kọ́ nípa Physiological Variations (WAEC)

Classification

Physiological Variations

Wo Idahun

Ibeere 10 Ìròyìn

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

lime-water

red litmus paper

blue litmus paper

blue cobalt chloride paper Ìdáhùn tó tọ́

pink cobalt chloride paper

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Blood Transfusion (WAEC)

Ka ìwé ẹ̀kọ́ nípa Nucleic Acids (WAEC)

Blood Transfusion

Nucleic Acids

Wo Idahun

Ibeere 11 Ìròyìn

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

Carbon dioxide and water

Carbon dioxide only

Carbon dioxide and alcohol Ìdáhùn tó tọ́

Alcohol and water

water and acetic acid

Awọn alaye Idahun

Wo Idahun

Ibeere 12 Ìròyìn

The part of the cell solely responsible for respiration is the

nucleus

nucleolus

mitochondria Ìdáhùn tó tọ́

golgi apparatus

endoplasmic reticulum

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Cellular Respiration (WAEC)

Ka ìwé ẹ̀kọ́ nípa Transport (JAMB)

Ka ìwé ẹ̀kọ́ nípa Irritability As A Basic Characteristic Of Protoplasm (WAEC)

Cellular Respiration

Transport

Irritability As A Basic Characteristic Of Protoplasm

Wo Idahun

Ibeere 13 Ìròyìn

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 Ìdáhùn tó tọ́

b → a → f → e → c

f → e → c → d → c

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Movement Of Substances Into And Out Of Cells (WAEC)

Ka ìwé ẹ̀kọ́ nípa Animal Nutrition (WAEC)

Ka ìwé ẹ̀kọ́ nípa Nucleic Acids (WAEC)

Ka ìwé ẹ̀kọ́ nípa Respiratory System (WAEC)

Movement Of Substances Into And Out Of Cells

Animal Nutrition

Nucleic Acids

Respiratory System

Wo Idahun

Ibeere 14 Ìròyìn

During thunderstorms the energy of lightning discharge causes

oxygen and nitrogen to combine Ìdáhùn tó tọ́

more carbon dioxide to be formed

nitrites to be converted to nitrates

nitrates to be converted to nitrogen

death

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Nitrogen Cycle (WAEC)

Nitrogen Cycle

Wo Idahun

Ibeere 15 Ìròyìn

In Mucor or Rhizopus carbohydrate is absorb in the form of

starch

sucrose

glucose Ìdáhùn tó tọ́

glycogen

arabinose

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Structural Adaptation For Survival (WAEC)

Ka ìwé ẹ̀kọ́ nípa Nucleic Acids (WAEC)

Structural Adaptation For Survival

Nucleic Acids

Wo Idahun

Ibeere 16 Ìròyìn

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

2 Ìdáhùn tó tọ́

Awọn alaye Idahun

Wo Idahun

Ibeere 17 Ìròyìn

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 Ìdáhùn tó tọ́

the roots store too much water

Awọn alaye Idahun

Wo Idahun

Ibeere 18 Ìròyìn

The testa

is normally absent

is included in the part numbered (1) Ìdáhùn tó tọ́

is fused in the part numbered (3)

is the part numbered (1)

surrounds the part numbered (4) and (5)

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Nutrition (JAMB)

Ka ìwé ẹ̀kọ́ nípa Cell Structure (WAEC)

Nutrition

Cell Structure

Wo Idahun

Ibeere 19 Ìròyìn

The conversion of excess amino acids into urea occurs in the

Kidney

pancreas

villi

liver Ìdáhùn tó tọ́

spleen

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Excretory Systems And Mechanisms; Types Of Excretory Systems (WAEC)

Excretory Systems And Mechanisms; Types Of Excretory Systems

Wo Idahun

Ibeere 20 Ìròyìn

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 Ìdáhùn tó tọ́

5 deals with oxygenated blood and 6 deals with deoxygenated blood

Awọn alaye Idahun

Wo Idahun

Ibeere 21 Ìròyìn

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 Ìdáhùn tó tọ́

protect the soil from being over-heated

protect the micro organisms in the soil

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Resources To Be Conserved: Soil, Water, Wildlife, Forest And Minerals (WAEC)

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

Wo Idahun

Ibeere 22 Ìròyìn

The center which controls respiratory activities the mammalian brain is the

cerebrum

olfactory lobe

pituitary organ

cerebellum

medulla Ìdáhùn tó tọ́

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Nervous Coordination (WAEC)

Nervous Coordination

Wo Idahun

Ibeere 23 Ìròyìn

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

Malpighian capsule Ìdáhùn tó tọ́

Urinary bladder

Ureter

Vas deferens

Urethra

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Excretory Systems And Mechanisms; Types Of Excretory Systems (WAEC)

Ka ìwé ẹ̀kọ́ nípa Properties And Functions Of The Living Cell (WAEC)

Excretory Systems And Mechanisms; Types Of Excretory Systems

Properties And Functions Of The Living Cell

Wo Idahun

Ibeere 24 Ìròyìn

The lime water in container B turned milky because

carbon dioxide was produced by plant Ìdáhùn tó tọ́

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

Awọn alaye Idahun

Wo Idahun

Ibeere 25 Ìròyìn

A green plant growing in a compost pit is feeding

holozoically

parasitically

saprophytically

holophytically Ìdáhùn tó tọ́

in none of the above ways

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Modes Of Nutrition (WAEC)

Ka ìwé ẹ̀kọ́ nípa Co-ordination And Control (JAMB)

Modes Of Nutrition

Co-ordination And Control

Wo Idahun

Ibeere 26 Ìròyìn

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

corolla

ovary

pistil (gynoecium) Ìdáhùn tó tọ́

ovules

receptacle

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Properties And Functions Of The Living Cell (WAEC)

Ka ìwé ẹ̀kọ́ nípa Reproduction (JAMB)

Ka ìwé ẹ̀kọ́ nípa Internal Structure Of A Flowering Plant (JAMB)

Ka ìwé ẹ̀kọ́ nípa 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

Wo Idahun

Ibeere 27 Ìròyìn

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 Ìdáhùn tó tọ́

Community

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Ecosystem (WAEC)

Ecosystem

Wo Idahun

Ibeere 28 Ìròyìn

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

X Ìdáhùn tó tọ́

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Genetic Terminologies (WAEC)

Genetic Terminologies

Wo Idahun

Ibeere 29 Ìròyìn

Which of the labelled parts is the venga caval opening?

3 Ìdáhùn tó tọ́

Awọn alaye Idahun

Wo Idahun

Ibeere 30 Ìròyìn

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

symbiont

commensal Ìdáhùn tó tọ́

saprophyte

parasite

epiphyte

Awọn alaye Idahun

Wo Idahun

Ibeere 31 Ìròyìn

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 Ìdáhùn tó tọ́

Culex

Tiger mosquito

none of the above

Awọn alaye Idahun

Wo Idahun

Ibeere 32 Ìròyìn

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 Ìdáhùn tó tọ́

resistance of laterities to heat

release of smoke from the soil

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Soil (JAMB)

Ka ìwé ẹ̀kọ́ nípa Humans And Environment (JAMB)

Soil

Humans And Environment

Wo Idahun

Ibeere 33 Ìròyìn

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 Ìdáhùn tó tọ́

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

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Classification (WAEC)

Ka ìwé ẹ̀kọ́ nípa Cell Structure (WAEC)

Classification

Cell Structure

Wo Idahun

Ibeere 34 Ìròyìn

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

myopia Ìdáhùn tó tọ́

colour blindnes

old age

hypermetropia

weakening of ciliary muscles

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Sense Organs (Nose, Tongue & Skin) (WAEC)

Sense Organs (Nose, Tongue & Skin)

Wo Idahun

Ibeere 35 Ìròyìn

Which of the following organs produces bile?

Gall bladder

Pancreas

Spleen

Liver Ìdáhùn tó tọ́

Stomach

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Alimentary System (WAEC)

Alimentary System

Wo Idahun

Ibeere 36 Ìròyìn

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 Ìdáhùn tó tọ́

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Nutrition (JAMB)

Nutrition

Wo Idahun

Ibeere 37 Ìròyìn

The joint between the atlas and axis vertebrae allows for

rotatory movement only

up and down or nodding movements only

rotatory and nodding movements Ìdáhùn tó tọ́

no movement at all

slight movement

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Co-ordination And Control (JAMB)

Co-ordination And Control

Wo Idahun

Ibeere 38 Ìròyìn

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 Ìdáhùn tó tọ́

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Cell Structure (WAEC)

Cell Structure

Wo Idahun

Ibeere 39 Ìròyìn

Milk can be pasteurized by

the addition of common salt

boiling for one hour

heating to 75^oc for 20 minutes Ìdáhùn tó tọ́

the addition of vinegar

heating to 100^oc for 12 hours

Awọn alaye Idahun

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".

Ka ìwé ẹ̀kọ́ nípa Classification (WAEC)

Ka ìwé ẹ̀kọ́ nípa Support And Movement (JAMB)

Classification

Support And Movement

Wo Idahun

Ibeere 40 Ìròyìn

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

cow

Fish

Pig

Man Ìdáhùn tó tọ́

Dog

Awọn alaye Idahun

Wo Idahun

Ibeere 41 Ìròyìn

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 Ìdáhùn tó tọ́

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

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa The Cell And Its Environment: Physical And Biophysical Processes (WAEC)

The Cell And Its Environment: Physical And Biophysical Processes

Wo Idahun

Ibeere 42 Ìròyìn

Reserved food materials is

stored in the parts numbered 2 and 3 Ìdáhùn tó tọ́

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

Awọn alaye Idahun

Wo Idahun

Ibeere 43 Ìròyìn

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 Ìdáhùn tó tọ́

both tips bent away from light

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Excretory System (WAEC)

Ka ìwé ẹ̀kọ́ nípa Classification (WAEC)

Ka ìwé ẹ̀kọ́ nípa Protein Synthesis (WAEC)

Ka ìwé ẹ̀kọ́ nípa Reproduction (Courtship Behaviour In Animals) (WAEC)

Excretory System

Classification

Protein Synthesis

Reproduction (Courtship Behaviour In Animals)

Wo Idahun

Ibeere 44 Ìròyìn

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 Ìdáhùn tó tọ́

Awọn alaye Idahun

Ka ìwé ẹ̀kọ́ nípa Transport System (WAEC)

Ka ìwé ẹ̀kọ́ nípa Plant Nutrition (WAEC)

Ka ìwé ẹ̀kọ́ nípa Morphological Variations In The Physical Appearance Of Individuals (WAEC)

Transport System

Plant Nutrition

Morphological Variations In The Physical Appearance Of Individuals