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Biology Past Questions

Study and practice Biology past questions with answers and detailed explanations. Then test your knowledge using our interactive CBT practice platform and prepare confidently for your upcoming examinations.

50 questions JAMB 2572 WAEC 2099 NECO 351 CUSTOM 10
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Past Questions

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Question 1 of 20 50 total questions
Question 11
jamb 2000

I. High birth rate and high immigration rate II. Low birth rate and high immigration rate III. Low mortality rate and low emigration IV. High mortality rate and high emigration rate. Which combination of the above can cause rapid over-crowding in climax biotic communities and human settlements?

AII and III
BI and III
CI and IV
DI and II
View Explanation & Discuss
Question 12
jamb 2000

Atmospheric nitrogen is converted to soil nitrogen for plant use by

Anitrification and combustion
Bputrefaction and lightning
Clightning and nitrification
Dcombustion and putrefaction
View Explanation & Discuss
Question 13
jamb 2000

An ecological succcession often leads to

Aan increase in species diversity
Bdecrease in species diversity
Can unstable community
Dthe dispersal of species
View Explanation & Discuss
Question 14
jamb 2000

In an experiment to estimate the volume of air in a soil sample using a measuring cylinder, it was found that:
initial volume of water .... = p cm3
volume of soil before mixing with water = q cm3
Final volume of water after adding soil = r cm3
From the data above, which of the following deductions is correct?

Ar = p + q
Br > p + q
Cq = r - p
Dr< p + q
View Explanation & Discuss
Question 15
jamb 2000

The fruit represented is mainly dispersed by?

Aanimals
Bwater
Cwind
Dbirds
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Question 16
jamb 2000

The part labelled II is the

Amesocarp
Bpericarp
Cendocarp
Depicarp
View Explanation & Discuss
Question 17
jamb 2000

Serum differs from blood plasma because

Acontains blood cells and fibrinogen
Bcontains soluble food and mineral salt
Clacks the blood protein and fibrinogen
Dlacks blood cells and albumin
View Explanation & Discuss
Question 18
jamb 2000

The chamber of the mammalian heart with the thickest wall is the

Aright ventricles
Bleft auricle
Cright auricle
Dleft ventricle
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Question 19
jamb 2000

The greatest amount of energy will be obtained by the oxidation of 100kg of?

Ameat
Bbutter
Csugar
Dbiscuits
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Question 20
jamb 2000

The production of violet colouration, when dilute NaOH solution is added to a solution of food substance, followed by drops of 1% CuSO4 solution while shaking, indicates the presence of

Aprotein
Bcarbohydrates
Cfats
Dreducing
View Explanation & Discuss
Question 21
jamb 2000

For growth to occur in organisms, the rate of

Afood storage must be low
Bcatabolism must exceed that of anabolism
Canabolism must exceed that of catabolism
Dfood storage must be high
View Explanation & Discuss
Question 22
jamb 2000

The inner ear contains two main organs, namely, the

Aeardrum and eustachian tube
Bcochlea and semi-circular canals
Coval window and ossicles
Dpinna and cochlea
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Question 23
jamb 2000

Short-sightedness can be corrected by lenses which are

Aconvex
Bbiconvex
Cplano-convex
Dconcave
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Question 24
jamb 2000
Bacteria in the large intestine of man are important in the
Asynthesis of vitamins K and B2
Bdigestion of vegetables
Csynthesis of vitamins A and D
Dabsorption of water
View Explanation & Discuss
Question 25
jamb 2000

The scapula and the ischium are part of the

Apectoral girdle
Bpelvic girdle
Cappendicular skeleton
Dhind limb
View Explanation & Discuss
Question 26
jamb 2000

The gas occupying the space labelled I is

Acarbon (IV) oxide
Bnitrogen
Chydrogen
Doxygen
View Explanation & Discuss
Question 27
jamb 2000

The substance labelled II originates from

AIII only
BIV only
CI and IV
DIII and Iv
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Question 28
jamb 2000

Peripherals arrangement of vascular tissues in dicots is a characteristic of the internal structure of the

Aleaf
Bpetiole
Cstem
Droot
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Question 29
jamb 2000

The part of the brain that controls body posture in mammals is the

Athalamus
Bcerebellum
Cspinal cord
Dcerebrum
View Explanation & Discuss
Question 30
jamb 2000

In mammals, reabsorption of salt takes place in

AIV
BIII
CII
DI
View Explanation & Discuss
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