JAMB Biology past questions and answers

JAMB Biology past questions and answers

1
Which of the following is a behavioural adaptation that protects prey from predators?

A
Hibernation

B
Shedding of leaves

C
Secreting irritating fluid

D
Dormancy

2
The period of inactivity seen in some animals during long period of heat or drought is

A
Migration

B
Aestivation

C
Hibernation

D
Adaptation

3
The insect trapping movements of the leaves of the venus fly trap is a behavioural adaptation for

A
support

B
surviving adverse weather conditions

C
obtaining food

D
dormancy

4
Animals are said to gregarious when

A
they survive adverse conditions of cold weather

B
they transmit information from one individual to another

C
they are of the same species moving together in a group

D
they give an alarm to alert others to show the normal protective behaviour of the group when danger threatens

5
The type of nutrition shown by spirogyra is

A
Symbiosis

B
Holozoic

C
Chemosynthetic

D
Holophytic

6
Raw materials required by green plants to manufacture their food are

A
mainly fluids

B
inorganic substances

C
living material

D
mainly gases

7
Which of the following pairs of organisms are photosynthetic?

A
Amoeba and paramecium

B
Euglena and chlamydomonas

C
Volvox and Rhizopus

D
Nostoc and plasmodium

 

8
The type of nutrition in which two organisms of different species live together and derive nutrients from each other is

A
symbiotic nutrition

B
saprophytic nutrition

C
holozoic nutrition

D
holophytic nutrition

9
Which of the following statement about the similarities in plant and animal transport is correct?

A
Materials and hormones are transported in fluid form

B
The transport medium is made up of only tissues

C
Their materials are transported in the same vessels

D
Diffusion is not required

 

10
Which of the following describes the function of lymph

A
Temperature regulation

B
Production of antibodies

C
Engulfing

D
Body defence

11
One of the major ways in which the blood is able to defend the body against disease causing organisms is

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A
Absorption of fatty acids and glycerol

B
Clumping

C
Single circulation

D
Translocation

12
Which of the following is not a transmittable character in plants

A
Habit of growth

B
Resistance to environmental factors

C
Life span

D
Haemophilia

13
Inheritable character/features possessed by an organism can be referred to as

A
Genes

B
Locus

C
Traits

D
Allelo morphs

14
One of the following is a process of transmission of hereditary characteristics by chromosomes

A
Genes relating to the same character occupy identical locations on the chromosomes

B
Separation of homologous chromosomes into four daughter cells

C
Separation of gametes during fertilization

D
Dictating the formation of a protein by a gene in a chromosome

 

15
The attachment of the embryo to the wall of the uterus is called

A
Ovulation

B
Implantation

C
Gametogenesis

D
Placentation

16
Which of the reproductive system in mammals secretes a part of the seminal fluid which raises the pH of the fluid in the female reproductive system?

A
Cowper’s gland

B
Prostate gland

C
Vas deferens

D
Seminal Vesicle

17
JAMB Biology question image 1276
The part labelled a in the above diagram is used for

A
Detection of pressure in water

B
Maintaining buoyancy in water

C
Gaseous exchange

D
Movement in water

18
JAMB Biology question image 1275
The above organism can be classified under which phylum in the animal kingdom

A
Nematoda

B
Chordata

C
Porifera

D
Annelida

19
One important characteristics of green plant is that they

A
possess specialized sense organs

B
Are usually motile

C
Are autotropic

D
Respond slowly to stimuli

 

20
A virus can sometimes be regarded as a living organism because it

A
causes diseases in plants and animals

B
It exists in a variety of shapes

C
Is easily visible with the aid of an electron microscope

D
Reproduces in living cells

21
A population is best described as

A
A group of the same species of organisms living together

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B
A group of animals and plants living together

CA group of insects and grasses

D
Different species of wild animals

22
The number of times an organism occurs within a given area of a habitat is referred to as

A Population growth rate

B Population frequency

C Population growth rate

D Population density
23
Reading the verdict of a case by a magistrate is an example of

A
A reflex action

B
An instinct

C
A conditioned reflex

D
A voluntary action

 

24
Which of the following structures controls the activities of the living cell?

A
Nucleus

B
Centrosome

C
Mitochondrion

D
Golgi body

25
Which of the following are components of glomerular filtrate?

A All the components of blood except mineral salts
B Water and salt only
C All the components of blood except plasma protein and cells
D Blood cells, amino acid, salts and nitrogenous wastes

26
The sum total of adaptive changes from pre-existing form that have taken place over a long time resulting in diversity of forms, structures and functions among organism is referred to as

A
Specification

B
Inorganic Evolution

C
Evolution

D
Organic Evolution

 

27
The specific portion of a habitat which is occupied by a particular species is referred to as

A
Ecological population

B
Ecological niche

C
Biotic community

D
Ecosystem

28
In plants, respiration occurs in

A
The stomata and lenticel only

B
Mesophyll cells only

C
All living cells

D
The root only

29
Which of the following is an example of discontinous variatio?

A
The range in height of a pea plant from 30cm to 50cm

B
Offsprings including two male cats and three female cats

C
The colour of pear plants grown in the dark

D
The adult body weight ranging from 50kg to 95kg

30
Which of the following type of soil has the highest water retaining capacity?

A
Loam

B
Laterite

C
Clay

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D
Sand

31
Rabbits cannot survive in an aquatic habitat because they have

A
fore and hind limbs

B
no gills

C
no fins

D
no scales

32
Which of the following substances pass through the root cell membrane by osmosis?

A
Ceil sap

B
Carbon dioxide

C
Oxygen

D
Water

33
Trees in Savanna habitats usually have thick bark which mainly.

A
Reduces the rate of transpiration

B
Protect them from scorching sun

C
Protect them from heavy winds

D
Resist bush fires

34
Competition among individuals of a population increases the

A
Number of organisms

B
Availability of nutrient supplied

C
Survival of the fittest

D
Enlargement of the territory

35
In natural selection, Darwin proposed that evolution occurred because of the following conditions except

A
that nature selects those that will survive to reproduce their kind

B
there is a fierce competition among the offspring

C
that the weaker offspring are eliminated

D
food and other needs are abundant

 

36
Which of the following substances has the highest amount of energy in joules per unit weight?

A
Carbohydrates

B
Fats

C
Proteins

D
Vitamins

37
Which of the following pairs of scientists discovered the Rhesis factor in human blood?

A
Hooke and Lavine

B
Darwin and Landsteiner

C
Landsteiner and Lavine

D
Hooke and Darwin

 

38
The study of an individual organism or a single species of organism and its environment is

A
Autecology

B
Ecological concepts

C
Synecoloy

D
Biotic composers

39
Which of the following is a nitrifying bacterium?

A
Rhizobium

B
Nictrobacter

C
Azotobacter

D
Pseudomonas

40
Which of the following is the effect of using artificial pollination in plant breeding?

A
Production of healthy crops

B
Lengthening the maturity time of crops

C
Making crops susceptible to disease

D
Improvement of the variety of crops

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