JAMB UTME - Biology - 1983 | Green Bridge CBT

28 g soil sample was heated to a constant weight of 24 g. When further heated to red hot and cooled, it weighed 18 g. What is the percentage of humus in the soil?

22.2

55.6

75.0

25.0

35.7

Answer Details

View Answer

Question 14 Report

Which sequence represents the correct order of organisms un a food chain? 1. Toad 2. Mucuna 3. Grasshopper 4. Snake 5. Hawk

5 → 4 → 1 → 3 → 2

1 → 2 → 3 → 4 → 5

2 → 1 → 3 → 4 → 5

2 → 3 →1 → 5 →4

2 → 3 → 1 → 4 → 5

Answer Details

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

Food Webs And Trophic Levels

View Answer

Question 15 Report

Which of the following structure is NOT found in the female agama lizard?

Pre-anal pads

Eardrum

Gular fold

Nasal scale

Nuchal crest

Answer Details

View Answer

Question 16 Report

Urea is produced in the

Liver

Bladder

Spleen

Kidneys

Gall bladder

Answer Details

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

Excretory Systems And Mechanisms; Types Of Excretory Systems

View Answer

Question 17 Report

Herbs differ from shrubs because they

do not produce fruit

are useful to herbalist

do not become woody

are only annual

are only perennials

Answer Details

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

Forms In Which Living Cells Exist

View Answer

Question 18 Report

The dental formula of a i(3/3); c(1/1); pm(4/4; m(2/3) = 42 represent that of a

rabbit

full grown man

young child

dog

sheep

Answer Details

Read lesson note on Physiological Variations (WAEC)

Physiological Variations

View Answer

Question 19 Report

The part of the mammalian brain responsible for maintaining balance is the

medulla oblongata

olfactory lobe

cerebellum

cerebrum

frontal lobe

Answer Details

Read lesson note on Nervous Coordination (WAEC)

Nervous Coordination

View Answer

Question 20 Report

In rhizopus carbohydrate is stored in the form of

Glucose

Paramylon

Glycogen

Starch

Oil

Answer Details

View Answer

Question 21 Report

If an organic compound has its hydrogen: oxygen ratio as 2:1, it is likely to be

a protein

a cabohydrate

a fat

a fatty acid and glycerol

an amino acid

Answer Details

Read lesson note on Modes Of Nutrition (WAEC)

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

Modes Of Nutrition

DNA Structure And Replication, RNA Transcription

View Answer

Question 22 Report

In a dicot leaf, guard cells differ from other epidermal cells because they

have no definite shape

lack nuclei

are smaller

contain chloroplast

lack vacuole

Answer Details

Read lesson note on Morphology Of Monocotyledonous And Dicotyledonous Plants (WAEC)

Read lesson note on Natural Habitats (JAMB)

Morphology Of Monocotyledonous And Dicotyledonous Plants

Natural Habitats

View Answer

Question 23 Report

Which of the following statements on the mammalian circulatory system is NOT true?

Blood in the pulimonary artery is richer in oxygen content than blood in the pulmonary vein

The blood in the hepatic portal vein is the richest in food substance

Blood flow is controlled by valves in the veins

Arteries are generally thicker and larger than veins

Fibrin helps in the formation of blood clot

Answer Details

View Answer

Question 24 Report

The function of the ossicles (malleus, incus and stapes) in the mammalian ear is

Transmission of vibrations

Regulation of pressure

Support of the inner ear

Maintenance of balance during motion

Secretion of oil

Answer Details

Read lesson note on Cell Structure (WAEC)

Cell Structure

View Answer

Question 25 Report

Which of the following features can be used to identify the figure above?

Position of 7

Its circular nature

Number of 5

Presence of 3

Width of 2

Answer Details

View Answer

Question 26 Report

A centipede differs from a millipede by its

colour

numerous abdominal segment

paired legs on each abdominal segment

poison claws

cylindrical body

Answer Details

Read lesson note on Animal Nutrition (WAEC)

Animal Nutrition

View Answer

Question 27 Report

In a positive phototropic response of a coleoptile, the region of greatest curvature is brought about by the

movement of auxins away from the region of curvature

even distribution of auxins in all parts of the coleoptile

inhibition of growth by auxins in the region f smaller curvature

concentration of auxins in the region of curvature

absence of auxins in the coleoptile

Answer Details

Read lesson note on Protein Synthesis (WAEC)

Read lesson note on Nucleic Acids (WAEC)

Protein Synthesis

Nucleic Acids

View Answer

Question 28 Report

Which of the following statements is NOT true of insectivorous plants?

They obtain part of their food by trapping and feeding on insects

They attract insects simply because of pollination

Thay can grow in soils poor in nitrogenous salts

They can supplement their nitrgen supply by feeding on insects

Example include butterworts, sundews and pitcher plants

Answer Details

Read lesson note on Plant Nutrition (WAEC)

Plant Nutrition

View Answer

Question 29 Report

Which of the following substance is not found in urine?

Water

Sodium chloride

Nitrogenous compounds

Calcium chloride

Nitrogenous salts

Answer Details

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

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

Read lesson note on The Ecology Of Populations (JAMB)

Excretory Systems And Mechanisms; Types Of Excretory Systems

Application Of The Principles Of Heredity

The Ecology Of Populations

View Answer

Question 30 Report

The tuber cassava is NOT a stem tuber because it

Is distended with food reserve

Has an aerial shoot portion

Has other structure that could be called root

Lacks axillary buds

Has a bark over its stored food

Answer Details

View Answer

Question 31 Report

In the onion bulb, food is stored in the

stem

lateral buds

cotyledons

outer scale leave

leaf base

Answer Details

Read lesson note on Nutrition (JAMB)

Read lesson note on Morphology Of Monocotyledonous And Dicotyledonous Plants (WAEC)

Nutrition

Morphology Of Monocotyledonous And Dicotyledonous Plants

View Answer

Question 32 Report

Starting from the skull end the vertebrate are arranged in the following order

axis, atlas, cervical, thoracic and lumber

atls, cervical, axis, thoracic and lumber

atlas, axis, thoracic, cervical and lumber

atlas, axis, cervical, thoracic and lumber

atlas, thoracic, cervical, axis and lumber

Answer Details

Read lesson note on Organization Of Life (WAEC)

Organization Of Life

View Answer

Question 33 Report

The movement of plant in response to external stimulus of no particular direction is

taxism

tropism

hyptotropic movement

nastic movement

phototropism

Answer Details

View Answer

Question 34 Report

Which of the following statements about the dentition of man is INCORRECT ? man has

More molars than incisors

No diastema

The same number of teeth on upper and lower jaw

A total of thirty-two teeth

A total of six molars

Answer Details

Read lesson note on Modes Of Nutrition (WAEC)

Read lesson note on Growth (JAMB)

Modes Of Nutrition

Growth

View Answer

Question 35 Report

Which of the following represents the evolutionary sequence in these plants? 1. Flowering plants 2. Ferns 3. Mosses 4. Algae 5. Conifers

2 → 1 → 4 → 3 → 5

5 → 4 → 3 → 2 → 1

2 → 4 → 5 → 1 →3

3 → 2 → 4 → 5 → 1

4 → 3 → 2 → 5 → 1

Answer Details

Read lesson note on Evolution (Theories and Evidence) (WAEC)

Evolution (Theories and Evidence)

View Answer

Question 36 Report

Banana, plantain and pineapple can be grouped together because they

produce small seeds

are multiple fruit

produce suckers

have runners

have bulbils

Answer Details

Read lesson note on Crime Detection (WAEC)

Crime Detection

View Answer

Question 37 Report

Which of the following statements is NOT true of mammalian erythrocytes?

They have haemoglobin

they appear yellow when looked at singly

They are disc shaped

The cell are more numerous than leucocytes

They have nuclei at maturity

Answer Details

Read lesson note on Classification (WAEC)

Read lesson note on Blood Transfusion (WAEC)

Read lesson note on Support And Movement (JAMB)

Classification

Blood Transfusion

Support And Movement

View Answer

Question 38 Report

An organism having one pair of identical genes is

a heterozygote

a hybride

an allelomorph

a homozygote

a diploid

Answer Details

Read lesson note on Behavioural Adaptations In Social Animals (WAEC)

Read lesson note on Heredity (JAMB)

Behavioural Adaptations In Social Animals

Heredity

View Answer

Question 39 Report

One disease NOT caused directly by bacteria is

malaria

tuberculosis

pneumonia

tetanus

cholera

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

View Answer

Question 40 Report

Groundnut is not really a 'nut' in the biological sense because

it is harvested from inside the ground

pericarp is not hard and tough

the fruit is not as hard as coconut

the fruit is not succulent

it is an achene

Answer Details

Read lesson note on Classification (WAEC)

Read lesson note on Physiological Variations (WAEC)

Classification

Physiological Variations

View Answer

Question 41 Report

The path taken by glucose from the ileum to the heart is

Ileum →hepatic portal vein →hepatic artery → vena cava → heart

Ileum → hepatic portal artery →hepatic artery → vena cava → heart

Ileum → hepatic portal vein → vena cava → heart

Ileum → hepatic vein → vena cava → heart

Ileum → hepatic portal vein → hepatic vein → vena cava → heart

Answer Details

View Answer

Question 42 Report

Which of the labelled part in the figure above will develop into new bulb?

Answer Details

View Answer

Question 43 Report

A population is defined as the collection of

Similar organism that are found in the same habitat

Similar organisms that breed in the same habitat

Similar organisms that interbreed freely in the same habitat

Similar organism eating the same food

Different organisms in the same habitat

Answer Details

A population is a summation of all the organisms of the same group or species, which live in a particular geographical area, and have the capability of interbreeding.

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

Co-ordination And Control

View Answer

Question 44 Report

which of these worms is beneficial to man?

Hookworm

Tapeworm

Roundworm

Earthworm

Guinea worm

Answer Details

Read lesson note on Plant Nutrition (WAEC)

Plant Nutrition

View Answer

Question 45 Report

In what order do the following structure develop during the metamorphosis of the toad? 1. External gills 2. Internal gills 3. Forelimbs 4.Hindlimbs 5. Mouth

12345

15243

21345

53412

54321

Answer Details

Read lesson note on Soil (WAEC)

Soil

View Answer

Question 46 Report

Which of the following elements are necessary for the formation of chlorophyll in a plant?

magnesium and iron