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Biology Past Questions

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Past Questions

60 questions

Question 1 of 20 60 total questions

Question 11

waec 1995

Which of these is not applicable to the circulation of water- in nature?

AWater removed from oceans are Permanently lost

BWater constantly evaporates from the seas, rivers, lakes and soil

CWater vapour rises. cools, condenses and precipitates as rain and dew

DWater is absorbed by plants and animals from their external environment

EPlants lose water by transpiration and decay

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Question 12

waec 1995

Which of these statements about food chain is not correct?

AAnimals in the chain are consumers

BA food chain usually begins with a green plant

CAll organisms in a food chain are animals

DLiving things are dependent on one another

EThe food chain involves energy transfer in an ecosystem

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Question 13

waec 1995

In a food chain the position occupied by an organism is called

Athe trophic level

Benergy level

Cthe feeding level

Dthe habitat level

Eniche

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Question 14

waec 1995

Which of the following is the correct chain for the organism found in an aquatic community?

AParamecium, Phytoplankton, Prawn, Waterflea, Tilapia, Shark

BWaterflea, Paramecium, Phytoplankton, Prawn, Tilapia, Shark

CPhytoplankton, Waterflea, Paramecium, Prawn, Shark, `tilapia

DPhytoplankton, Paramecium, Waterflea, Prawn, Tilapia, Shark

EParamecium, Phytoplankton, Waterfiea, Prawn, Shark, Tilapia

View Explanation & Discuss

Question 15

waec 1995

The graphs above show the results of experiments which investigated the effect of temperature and oxygen on the rate of uptake of certain ions labelled X and Y by a plant root. Use them to answer the question

Which of the temperature ranges will likely favour the plant best?

A0 -10^oC

B15.-20^oC

C30- 40^oC

D45 - 50^oC

Eabove 50^oC

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Question 16

waec 1995

Which of the following conclusions
cannot be drawn from the graphs?

AIon is taken up more rapidly at suitable temperature

BSuitable oxygen concentration increases ion uptake

CIon uptake requires energy from aerobic respiration of sugar

DIon uptake occurs most rapidly in adequate supply of, respiratory substrate

EThe quantity of ions absorbed is inversely proportional to the quantity of carbohydrate (sugar) synthesized.

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Question 17

waec 1995

Very low annual rainfall, sparse vegetation, high day temperatures and cold nights are the characteristics
of the biome known as

Aswamp

Btropical forest

Csouthern guinea savanna

Dafro alpine

Edesert

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Question 18

waec 1995

Which of the following is characteristics of a swamp?

AVegetation with stratified arrangement

Bmesophytes with broad leaves

CThe ground is flooded most of the time

DPredominance of climbing plants

EMany plants with tire resistant structures

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Question 19

waec 1995

The distribution of organisms in a fresh - water habitat like a stream or pond is determined by the following
except

Arainfall

Btemperature

CpH of soil

Dlight penetration

Etidal movements

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Question 20

waec 1995

Which of the following conditions is not necessary for photosynthesis to occur in plants?

AThere must be light

BThere must be xylem tissue used to conduct water

CThere must be chlorophyll to trap radiant energy

DCarbondioxide must be present

EWater must be present

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Question 21

waec 1995

Which of these processes removes carbon from the atmosphere?

APutrefaction of animals

BBurning of fuels

CPhotosynthesis

DVolcanic eruption

ERespiration in plants

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Question 22

waec 1995

At the end of photosynthesis, the green leaf is tested for starch and not glucose, because

Athe glucose is used up immediately to provide energy for the needs of the leaf

Bthe glucose formed is immediately converted to starch

Cstarch is stored only in leaves

Dthere are no chemicals for glucose test in leaves

Eit is easy to test for starch

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Question 23

waec 1995

Which of the following organisms has a symbiotic relationship with green algae?

AAmoeba

BParamecium

CHydra

DEuglena

EChlamydomonas

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Question 24

waec 1995

The series of changes that occur in a seed by which the embryo develops into a seedling is known as

Afertilization

Bgametogenesis

Cpollination

Dgermination

Eregeneration

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Question 25

waec 1995

Which of the following is an advantage of dispersal of fruits and seeds? It allows

Afair distribution of source of food for animals

Bgrowth in close association with parent plant

Ceven distribution of plants and reduction of intraspecific competition

Dkeen competition for food

Ethe seeds to evolve new species

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Question 26

waec 1995

Which of the following statements is not correct?

AShortage of food may be caused by pestilence, rinderpest and neglect of farming

BShortage of food may lead to competition, emigration, death and decline in the rate of reproduction

COver-crowding may lead to scarcity of food

DDispersal of seeds and fruits prevents overcrowding

ETerritorial defence encourages food scarcity in a habitat

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Question 27

waec 1995

Which of the following structures are characteristics of insect pollinated flowers?

ADull coloured flowers with no nectar

BVery light numerous and pendulous stamen

CBrightly coloured petals, scent nectar

DFlowers are usually small and inconspicuous

EStigma are large, feathery and hang outside the flower

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Question 28

waec 1995

The term syncarpous is used to describe a flower when the carpels are

Amany and fused

Btwo only

Ctwo and separate

Dmany and free

Elying at different parts of a flower

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Question 29

waec 1995

The following are directly involved in transmission of sound waves to the brain except

Aeardrum

Bauditory meatus

Cauditory ossicles

Deustachian tube

Ecochlea

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Question 30

waec 1995

Which of the following statements is false?

AHuman sense of smell is easily fatigued

BThe skin can perceive the sensations of touch, pain, pressure and temperature

CTaste buds and olfactory cells are active when wet as well as when dry

DSensory nerve endings receive stimuli and send to the central nervous system

ESenses of smell and taste can be weakened by catarrh or blocked nose.

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