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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.

5,032 questions JAMB 2572 WAEC 2099 NECO 351 CUSTOM 10
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Past Questions

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Question 1 of 20 5,032 total questions
Question 321
jamb 2021

The number of plant species obtained from a population study of a garden is as follows: Guinea grass (15), Ipomoea spp (5), Sida spp (7) and Imperata spp (23)

What is the percentage of occurrence of Imperata spp?

A35%
B16%
C46%
D23%
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Question 322
jamb 2021

I. High birth rate and high immigration rate

II. Low birth rate and high immigration rate

III. Low mortality rate and low emigration rate

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
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Question 323
jamb 2021

The correct sequence for the perception of smell in mammals is?

Achemicals --> olfactory nerve endings --> brain
Bdissolved chemicals --> nasal sensory cells --> brain
Cchemicals --> mucus membrane sensory cells --> brain
Ddissolved chemicals --> sensory cells --> olfactory nerve --> brain
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Question 324
jamb 2021

A freshwater plant such as water lily can solve the problem of buoyancy by the possession of?

Aaerenchyma tissues
Bdissected leaves
Cthin cell walls of the epidermis
Dwater-repelling epidermis
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Question 325
jamb 2021

The appendicular skeleton is composed of the pectoral girdle?

Apelvic girdle, fore and hind limbs
Bpelvic girdle and fore limbs
Clumbar vertebrae and pelvic girdle
Dlumbar vertebrae, fore and hind limbs
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Question 326
jamb 2021

Which of the following is a measure for the control of bilharzia?

ACutting low bushes around homes
BApplication of molluscicides in water bodies
CScreening windows and doors with mosquito nets
DApplication of herbicides in water bodies
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Question 327
jamb 2021

People who suck petrol with their mouths run the risk of increasing in their blood the concentration of

Airon
Blead
Ccalcium
Dmagnesium
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Question 328
jamb 2021

Which of the following is TRUE of the process of conjugation in Paramecium?

AMicronucleus disintegrates
BEach ex-conjugant divides only once
CMacro nucleus undergoes division
DEach micronucleus divides twice
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Question 329
jamb 2021

The blood vessel which carries blood from the alimentary canal to the liver is the?

Ahepatic artery
Bhepatic vein
Chepatic portal vein
Dmesenteric artery
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Question 330
jamb 2021

Which of the following food substances will produce a brick-red colour when warmed with Benedict's solution?

AGlucose
BStarch
CEgg White
DMaltose
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Question 331
jamb 2021

The villus in the small intestine is significant because it?

Aincreases the surface area for absorption
Bincreases the surface area for digestion
Cassists in mixing digested food
Dassists in filtering undigested food
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Question 332
jamb 2021

Aged erythrocytes are destroyed in the?

Apancreas
Bliver
Clymph nodes
Dkidney
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Question 333
jamb 2021

In the mammalian respiratory system. exchange of gases occurs in the?

Alungs
Bbronchi
Cbronchioles
Dalveoli
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Question 334
jamb 2021

In demonstrating the importance of mineral elements in plants, the culture bottle must be darkened to?

Aprevent algal growth in culture solution
Ballow root growth
Cprevent breakdown of mineral elements
Dprevents photosynthesis in the root
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Question 335
jamb 2021

When the original king and queen of termites die, they are replaced by 

Athe king and queen of another colony
Bsome adult reproductives from the same colony
Csome adult workers which are specially fed to breed
Ddeveloping nymphs nurtured as secondary reproductives
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Question 336
jamb 2021

The initial volume of water poured into a bag of dry soil was 50ml and the amount that drained through was 35mI. The percentage water content of the fully soaked soil is therefore?

A46.7
B25.0
C20.0
D30.0
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Question 337
jamb 2021

Which of the following is NOT regarded as a pollutant on land or in the air?

ASmoke
BNitrogen
CNoise
DSulphur dioxide
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Question 338
jamb 2021

When a Spirogyra cell is immersed in a salt solution more concentrated than its cell sap, it?

Aremains unchanged
Btakes tip water and burst
Cabsorbs a little water
Dloses water and shrivels
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Question 339
jamb 2021

Flatworms and roundworms are said to be invertebrates because?

Athey are small animals
Bthey can live inside the vertebrates
Csome of them are unicellular
Dthey have no backbones
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Question 340
jamb 2021

Choose the sequence which represents the correct order of organisms in a food chain

AGrass, snake, toad, grasshopper, hawk
BGrass, grasshopper, toad, snake, hawk
CGrass, grasshopper, snake, toad, hawk.
DGrass, snake, grasshopper, toad, hawk
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