Biology Past Questions

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Past Questions

5,032 questions
Question 1 of 20 5,032 total questions
Question 1551
jamb 2001

A freshwater pond may contain

Atadpole, water boatman, leeches and crab
Bwater beetle, shrimps, water snail and water bug
Cwater lily, fish, water scorpion and dragon larva
Dpon skater, water lily, shark and mosquito larva
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Question 1552
jamb 2001

The physical space occupied by an organism together with its functional role in community can be described as

Aenvironment
Bbiome
Cniche
Dhabitat
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Question 1553
jamb 2001

The greatest influence on a stable ecosystem in nature is exerted by

Aman
Bpollution
Canimals
Drainfall
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Question 1554
jamb 2001

The highest percentage of energy in an ecosystem occurs at the level of the

Asecondary consumer
Bdecomposers
Cproducers
Dprimary consumers
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Question 1555
jamb 2001

The epiphytic habitat can best be described as

Aarboreal
Bestaurine
Caquatic
Dterrestrial
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Question 1556
jamb 2001

The factor that least affects food shortages in sub-saharan Africa is

Aflooding
Bpests
Cmixed-cropping
Ddrought
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Question 1557
jamb 2001

Carbon (IV) oxide content of the atmosphere is least affected by

Acutting down and clearing of forests
Bforest fires
Cburning of fossil fuels
Dplant and animal respiration
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Question 1558
jamb 2001

The number of plants species obtained from a population study of a garden is as follows: Guinea grass (15), Ipomea 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 1559
jamb 2001

Salts and water are absorbed in the roots and transported to leaves by

Adiffusion through the xylem tissues
Bosmosis through the phloem tissues
Cdiffusion through the phloem tissues
Dosmosis through the xylem tissues
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Question 1560
jamb 2001

Blood vessel usually pass through the structure labelled

AIII
BII
CV
DIV
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Question 1561
jamb 2001

The structure above represents a

Acaudal vertebra
Blumbar vertebra
Cthoracic vertebra
Dcervical vertebra
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Question 1562
jamb 2001

When specimen X is mixed with few drops of iodine solution, the appearance of a blue-black colour confirms that X is

Agalactose
Bstarch
Csucrose
Dglucose
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Question 1563
jamb 2001

The part labelled II is the

Afenestra ovalis
Bmiddle ear canal
Cinternal auditrory meatus
Dear ossicles
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Question 1564
jamb 2001

The parts which function together to bring about hearing are labelled

AIV, V and VI
BI, II, IV and VI
CI, II, III and IV
DI, II and IV
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Question 1565
jamb 2001

The veins of the leaf are formed by the

Avascular bundles
Bcambium cells
Cpalisade tissue
Dspongy mesophyll
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Question 1566
jamb 2001

The transportation of oxygen and carbon (IV) oxide in mammals is carried out by

Aleucocytes
Bthrombocytes
Cphagocytes
Derythrocytes
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Question 1567
jamb 2001

When yeast respire anaerobically, it converts simple sugar to carbon (IV) oxide and

Aoxygen
Bacid
Calcohol
Dwater
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Question 1568
jamb 2001

The enzyme invertase will hydrolyze sucrose to give

Amaltose and glucose
Bglycerol and fatty acid
Cglucose and fructose
Dmannose and galactose
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Question 1569
jamb 2001

A seedling grown in the dark is likely to be

Aetiolated
Bdormant
Csturdy
Dstunted
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Question 1570
jamb 2001

The gas produced during tissue respiration can be identified by using

Acalcium hydroxide
Bcopper sulphate
Ccalcium carbonate
Dsodium hydroxide
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