NECO SSCE - Biology - 2000 (Objective)

Question 1 Report

Root pressure and the transpiration pull are biophysical processes which account for the?

ascent of water into leaves Correct answer

exchange of gases at leaf surfaces

movement of manufactured food from leaves to storage tissues

opening and closing of stomata

Release of energy from glucose molecules

Answer Details

Read lesson note on The Cell And Its Environment: Physical And Biophysical Processes (WAEC)

The Cell And Its Environment: Physical And Biophysical Processes

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Question 2 Report

Which one is NOT an excretory product of man?

carbon(iv)oxide

oxygen Correct answer

nitrogenous wastes

salts

respiration

Answer Details

Read lesson note on Excretory Systems And Mechanisms; Types Of Excretory Systems (WAEC)

Read lesson note on Movement (WAEC)

Excretory Systems And Mechanisms; Types Of Excretory Systems

Movement

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Question 3 Report

The process which ensures that the chromosome number for each species of organism remains constant from generation to generation is called

fission

fusion

meiosis Correct answer

mitosis

oogenesis

Answer Details

Read lesson note on Chromosomes: The Basis Of Heredity (WAEC)

Read lesson note on Support And Movement (JAMB)

Read lesson note on Growth (JAMB)

Chromosomes: The Basis Of Heredity

Support And Movement

Growth

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Question 4 Report

Which of these traits shows discontinuous variation ?

ability to roll the tongue Correct answer

colour of hair

height of stem

size of girth

weight of organism

Answer Details

Read lesson note on Genetic Terminologies (WAEC)

Read lesson note on Heredity (JAMB)

Genetic Terminologies

Heredity

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Question 5 Report

Which of the following agricultural practices will NOT promote soil conservation ?

afforestation

bush burning Correct answer

crop rotation

manuring

mulching

Answer Details

Read lesson note on Habitats (WAEC)

Read lesson note on Ways Of Ensuring Conservation (WAEC)

Read lesson note on Soil (WAEC)

Habitats

Ways Of Ensuring Conservation

Soil

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Question 6 Report

Modern method of classification of living things is based on similarity of?

colour

habitat

shape

size

structure Correct answer

Answer Details

Read lesson note on Classification (WAEC)

Classification

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Question 7 Report

The most likely mode of an organism that possesses attachment structure, thin outer surface layer and absence of an elaborate digestive tract is

Autotropic

holophytic

parasitic Correct answer

saprophytic

symbiotic

Answer Details

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Question 8 Report

The group of micro-organisms that plays a vital role in the baking industry is

algae

bacteria

fungi Correct answer

protozoa

viruses

Answer Details

Read lesson note on Microorganisms Around Us (WAEC)

Read lesson note on Characteristics Of Some Of The Orders Of Class Insecta (WAEC)

Microorganisms Around Us

Characteristics Of Some Of The Orders Of Class Insecta

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Question 9 Report

Which ONE is not an adaptation for water conservation in plant found is arid region?

absence of leaves

leaves reduced to spines

raised stomata Correct answer

sunken stomata

thick stems

Answer Details

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Question 10 Report

When a student suddenly runs into a snake on a pathway, which of these chemical messengers are released ?

adrenaline Correct answer

insulin

oestrogen

testosterone

thyroxine

Answer Details

Read lesson note on Hormonal Coordination (WAEC)

Hormonal Coordination

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Question 11 Report

Two identical twin boys had different finger print. This proves that

finger print is a sex-linked character

the genotypes of the twins are similar

the phenotypes of the twins are similar

there are morphological variations Correct answer

there are physiological variation in the twins

Answer Details

Read lesson note on Physiological Variations (WAEC)

Physiological Variations

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Question 12 Report

What is the result of placing a red blood cell in a hypertonic solution ?

crenation Correct answer

haemolysis

osmosis

plasmolysis

wilting

Answer Details

Read lesson note on The Cell And Its Environment: Physical And Biophysical Processes (WAEC)

The Cell And Its Environment: Physical And Biophysical Processes

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Question 13 Report

Which of these allelic pairs represent homozygous dominant trait?

TT Correct answer

Answer Details

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Question 14 Report

The genetic composition of an organism is termed

an allele

a cross

a genotype Correct answer

a phenotype

a hybrid

Answer Details

Read lesson note on Genetic Terminologies (WAEC)

Genetic Terminologies

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Question 15 Report

An example of a conditioned reflex is

blinking of the eye-lids

shout of exclamation

knee jerk

riding a bicycle Correct answer

twitching of facial muscles

Answer Details

Read lesson note on Excretory Systems And Mechanisms; Types Of Excretory Systems (WAEC)

Read lesson note on Nervous Coordination (WAEC)

Excretory Systems And Mechanisms; Types Of Excretory Systems

Nervous Coordination

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Question 16 Report

Which of these is NOT an excretory organ/organelle?

flame cell

kidney

malpighian tubule

nephridium

spiracle Correct answer

Answer Details

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Question 17 Report

An example of sex-linked trait is

ability to roll the tongue

ability to taste PTC

baldness Correct answer

blindness

blood group

Answer Details

Read lesson note on Behavioural Adaptations In Social Animals (WAEC)

Read lesson note on Linkage, Sex Determination And Sex Linked Characters (WAEC)

Behavioural Adaptations In Social Animals

Linkage, Sex Determination And Sex Linked Characters

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Question 18 Report

Use the information to answer this question.

I. Smoking
II. Sun drying
III. Freezing
IV. Canning
V. Salting
VI. Pasteurization

A method of food preservation that works on the principle of dehydration is

I ,II ,and V Correct answer

II ,III, and V

Answer Details

Read lesson note on Evolution (Recombination DNA) (WAEC)

Evolution (Recombination DNA)

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Question 19 Report

Which of the following statements is NOT true according to the first and second laws of thermodynamics ?

In all energy conversions a certain amount is always lost as heat

In any given ecosystem the energy transformations can be classified into catabolic and anabolic processes

The energy at one trophic level is the same as the next higher or the one below it Correct answer

The sun is the ultimate source of energy in the universe

The total energy in an ecosystem retains constant

Answer Details

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Question 20 Report

Which structure of the mammalian ear when removed will affect the maintenance of balance?

auditory canal

ear ossicles

pinna

semi-circular canals Correct answer

tympanium

Answer Details

Read lesson note on Spirogyra And Rhizopus (WAEC)

Spirogyra And Rhizopus

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Question 21 Report

In a case of disputed paternity the most likely clue to resolving the problem is to match the ________________ of the baby with that of the father .

blood group Correct answer

facial appearance

finger print

sex type

skin color

Answer Details

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Question 22 Report

The streaming movement of cytoplasm observed in a freshly cut leaf of a water plant is termed

amoeboids

centrifugal motion

ciliary motion

cyclosis Correct answer

osmosis

Answer Details

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Question 23 Report

Which of the following is NOT a natural source of energy ?

coal

electricity Correct answer

food

sun

water

Answer Details

Read lesson note on Biotechnology (WAEC)

Biotechnology

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Question 24 Report

Which of these organisms is most likely to have the least number if found within the same habitat?

grasshopper

hawk Correct answer

lizard

snake

toad

Answer Details

Read lesson note on Co-ordination And Control (JAMB)

Co-ordination And Control

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Question 25 Report

Which of these agencies do not have anything to do with conservation of natural resources?

Family Economics Advancement Programme Correct answer

Federal Environmental Protection Agency

Nigerian Conservation Foundation

Nigerian Game Reserve Authorities

World Wildlife Fund for Nature

Answer Details

Read lesson note on Integrated Water Resources Management (WAEC)

Read lesson note on Resources To Be Conserved: Soil, Water, Wildlife, Forest And Minerals (WAEC)

Integrated Water Resources Management

Resources To Be Conserved: Soil, Water, Wildlife, Forest And Minerals

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Question 26 Report

Which of the following sequences best illustrates a food chain in an aquatic habitat ?

algae → fungi → toad → snake

diatoms → tadpole → fish → kingfisher Correct answer

grass → grasshopper → toad → whale

phytoplankton → fish → snake → kingfisher

zooplankton → tadpoles → fish → kingfisher

Answer Details

Read lesson note on Food Webs And Trophic Levels (WAEC)

Food Webs And Trophic Levels

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Question 27 Report

An essential with the dental formula I 0/3 : C 0/1 : P 3/3 : M 3/3 is most likely adapted for ___________ nutrition .

carnivorous

herbivorous Correct answer

holophytic

ominivorous

parasitic

Answer Details

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Question 28 Report

Which of the following agricultural activities has the least harmful effect on the environment ?

application of fertilizers

practicing crop rotation Correct answer

practicing monocropping

spraying herbicides

spraying pesticides

Answer Details

Read lesson note on Microorganisms Around Us (WAEC)

Read lesson note on Natural Habitats (JAMB)

Microorganisms Around Us

Natural Habitats

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Question 29 Report

Which statement about decomposers is NOT true?

They are saprophytes

They carry on intra-cellular digestion Correct answer

They facilitate the cleansing of the environment

They facilitate the recycling of nutrients

They form a link between autotrophs and heterotrophs

Answer Details

Read lesson note on Classification (WAEC)

Classification

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Question 30 Report

An instrument of measuring wind speed is called

an anemometer Correct answer

a barometer

a hygrometer

a speedometer

a thermometer

Answer Details

Read lesson note on Evidence Of Evolution (JAMB)

Evidence Of Evolution

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Question 31 Report

Which of these statements is NOT an idea contained in Lamarck’s theory of evolution.?

acquired characters are inheritable

changes in the environment result in corresponding changes in the species

environmental changes cause the organism to acquire new structures as an adjustment to a new prevailing environment

organisms develop specialized characteristic by use and disuse of organs

organisms tend to an increase in number at an exponential rate Correct answer

Answer Details

Read lesson note on Theories Of Evolution (JAMB)

Read lesson note on Evolution (Theories and Evidence) (WAEC)

Theories Of Evolution

Evolution (Theories and Evidence)

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Question 32 Report

Which of these is NOT a method of asexual reproduction?

budding

fission

fusion Correct answer

fragmentation

layering

Answer Details

Read lesson note on Variation In Population (JAMB)

Read lesson note on Reproduction (Courtship Behaviour In Animals) (WAEC)

Read lesson note on Reproduction (Physical Changes In Males And Females) (WAEC)

Variation In Population

Reproduction (Courtship Behaviour In Animals)

Reproduction (Physical Changes In Males And Females)

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Question 33 Report

Which organisms are NOT autotrophic?

algae

Ferns

fungi Correct answer

grasses

mosses

Answer Details

Read lesson note on Forms In Which Living Cells Exist (WAEC)

Read lesson note on Ecology Of Population (WAEC)

Read lesson note on Physiological Variations (WAEC)

Forms In Which Living Cells Exist

Ecology Of Population

Physiological Variations

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Question 34 Report

When both alleles in a heterozygous individual are fully expressed in the phenotype of the F, generation this phenomenon is described as

co-dominance Correct answer

dominance

incomplete dominance

mutation

recession

Answer Details

Read lesson note on Heredity (JAMB)

Heredity

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Question 35 Report

The release of sperms through the urethral opening into the vagina is called?

copulation

ejaculation Correct answer

fertilization

spermatogenesis

urination

Answer Details

Read lesson note on Organization Of Life (WAEC)

Read lesson note on Reproduction (Physical Changes In Males And Females) (WAEC)

Organization Of Life

Reproduction (Physical Changes In Males And Females)

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Question 36 Report

A common characteristic of ALL living things is

gametogenesis

hibernation

photosynthesis

phototropism

respiration Correct answer

Answer Details

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Question 37 Report

Which material is NOT necessary for the manufacture of plant food?

carbon(iv)oxide

chloropyll

oxygen Correct answer

sunlight

water

Answer Details

Read lesson note on Modes Of Nutrition (WAEC)

Read lesson note on Plant Nutrition (WAEC)

Modes Of Nutrition

Plant Nutrition

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Question 38 Report

Lianas is to tropical rain forest as an extensive root system is to ---------------- habitat

afro-alpine

estuarine

fresh - water

grass-land Correct answer

marine

Answer Details

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Question 39 Report

The part of the fruit which serves a protective function is called

endocary

epicarp Correct answer

mesocarp

pericarp

testa

Answer Details

Read lesson note on Regulation Of Internal Environment (WAEC)

Read lesson note on Reproduction (JAMB)

Read lesson note on Natural Habitats (JAMB)

Regulation Of Internal Environment

Reproduction

Natural Habitats

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Question 40 Report

Which of these pairs best illustrates symbiotic association?

dodder on green plants

ferns growing on palm trees

lice on hair of mammals

sea anemone attached to hermit crab Correct answer

tick found on body of cow

Answer Details

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Question 41 Report

Which of these is a liming factor with respect to human population size?

emigration Correct answer

high standard of living

immigration

improved medicare

natality

Answer Details

Read lesson note on Co-ordination And Control (JAMB)

Co-ordination And Control

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Question 42 Report

An essential element whose deficiency in plants will result in poor growth, particularly of the roots, and is essential for cell well formation is

calcium Correct answer

iron

magnesium

nitrogen

phosphorus

Answer Details

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Question 43 Report

An organism existing at the colonial level of life is

chlamydomonas

euglena

paramecium

spirogyra

volvox Correct answer

Answer Details

Read lesson note on Forms In Which Living Cells Exist (WAEC)

Forms In Which Living Cells Exist

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