2268 + Mcqs in Science Page 19 McqOptions

901.	Animals that depend on each other for living are called
A.	dependent producers
B.	dependent consumers
C.	producers
D.	consumers
Answer» E.

Discussion

902.	The energy which is absorbed by the green plants, is about
A.	20 percent of sunlight
B.	30 percent of sunlight
C.	40 percent of sunlight
D.	50 percent of sunlight
Answer» E.

Discussion

903.	Polar bears have sharp claws and hairy soles for
A.	awesome grip
B.	quick sprinting
C.	climbing mountains
D.	none of the above
Answer» B. quick sprinting

Discussion

904.	The basic need for survival is
A.	food
B.	water
C.	shelter
D.	reproduction
Answer» C. shelter

Discussion

905.	All food chains begin with
A.	primary consumers
B.	producers
C.	secondary consumers
D.	all of them
Answer» E.

Discussion

906.	During winter, dormant condition of insects is termed as
A.	pause
B.	diapause
C.	interrupt
D.	respite
Answer» C. interrupt

Discussion

907.	Skin keeps itself warm through
A.	piece of blanket
B.	insulated wool layer
C.	insulated fat layer
D.	insulated protein layer
Answer» D. insulated protein layer

Discussion

908.	The flow of energy from producers to consumers forms a
A.	food ring
B.	food chain
C.	food tie
D.	food transfer
Answer» C. food tie

Discussion

909.	Transfer of energy in a food chain is shown by
A.	double arrow
B.	inverse arrow
C.	straight arrow
D.	curved arrow
Answer» D. curved arrow

Discussion

910.	Carnivores are always
A.	producers
B.	primary consumers
C.	secondary consumers
D.	tertiary consumers
Answer» D. tertiary consumers

Discussion

911.	An example of habitat is
A.	pond
B.	air
C.	atmosphere
D.	troposphere
Answer» B. air

Discussion

912.	To dig the soil, moles have
A.	huge and sharp teeth
B.	short feet but sharp claws
C.	extra large feet and sharp claws
D.	small but sharp teeth
Answer» D. small but sharp teeth

Discussion

913.	Plants growing in drier conditions tend to have small numbers of stomata on their lower leaf surface to save
A.	water loss
B.	stored sunlight
C.	to prevent itself from consumers
D.	energy loss
Answer» B. stored sunlight

Discussion

914.	Swollen stem of cactus is important to
A.	absorb more oxygen
B.	absorb more carbon dioxide
C.	absorb more water
D.	absorb more sunlight
Answer» D. absorb more sunlight

Discussion

915.	Herbivores are always
A.	producers
B.	primary consumers
C.	secondary consumers
D.	tertiary consumers
Answer» C. secondary consumers

Discussion

916.	Polar bears have thick fur so that they can
A.	camouflage
B.	keep themselves warm
C.	dry faster
D.	stay alive and healthy
Answer» C. dry faster

Discussion

917.	Animals which depend on primary consumers are known as
A.	producers
B.	primary consumers
C.	secondary consumers
D.	tertiary consumers
Answer» D. tertiary consumers

Discussion

918.	A place where organisms can take shelter and reproduce is known as
A.	ecosystem
B.	habitat
C.	community
D.	both b and c
Answer» C. community

Discussion

919.	The birds and animals that feed on dead decaying organisms are called
A.	scavengers
B.	primary producers
C.	primary consumers
D.	secondary consumers
Answer» B. primary producers

Discussion

920.	Humus can also be used by plants as a source of
A.	oxygen gas
B.	carbon dioxide gas
C.	fertilizers
D.	nitrogen gas
Answer» D. nitrogen gas

Discussion

921.	Due to scarce supply of food, in winter animals
A.	sleep
B.	die
C.	hibernate
D.	migrate
Answer» D. migrate

Discussion

922.	Fish have mucus on their overlapping scales to
A.	prevent predators
B.	slide through water
C.	absorb oxygen
D.	release carbon dioxide
Answer» C. absorb oxygen

Discussion

923.	A collection of multiple food chains is known as
A.	food connection
B.	food web
C.	food tie
D.	food cover
Answer» C. food tie

Discussion

924.	To swim through water easily, fish have
A.	feathers
B.	wings
C.	propellers
D.	fins
Answer» E.

Discussion

925.	To keep the fish floating in water, it requires
A.	fins
B.	tail
C.	swim bladder
D.	feathers
Answer» D. feathers

Discussion

926.	If the color of an insect is green, it has
A.	less chances to survive
B.	more chances to survive
C.	to adopt environment to survive
D.	to adopt the nature of a tree to survive
Answer» E.

Discussion

927.	In winter, some birds move to warmer places where there is more food, this is called
A.	emigration
B.	immigration
C.	migration
D.	transfer
Answer» D. transfer

Discussion

928.	As the winter approaches, many plants
A.	die
B.	wilt
C.	refresh
D.	get dormant
Answer» E.

Discussion

929.	The feces and dead waste are food for
A.	virus
B.	insects
C.	bacteria and fungi
D.	viruses and bacteria
Answer» D. viruses and bacteria

Discussion

930.	Small mammals like mice, rats and rabbits come out in night to avoid
A.	fast wind
B.	predators
C.	sunlight
D.	fire in the grasslands
Answer» C. sunlight

Discussion

931.	During decomposition, the living material is broken down into
A.	feces
B.	gas
C.	water
D.	humus
Answer» E.

Discussion

932.	The name of the chemist who started plastic industry, is
A.	George Conner
B.	Alex Martin
C.	Leo Baekeland
D.	Robin Norman
Answer» D. Robin Norman

Discussion

933.	'Ammonia' is an important component of
A.	water
B.	soil
C.	fertilizers
D.	insecticides
Answer» D. insecticides

Discussion

934.	The exothermic reaction of two elements, iron and sulfur, form the compound,
A.	iron only
B.	sulphur only
C.	iron and sulphur both
D.	iron sulfide
Answer» E.

Discussion

935.	Alteration of material without changing its chemical make-up is known as
A.	physical change
B.	chemical variation
C.	biological change
D.	chemical change
Answer» B. chemical variation

Discussion

936.	The color of solid iron is
A.	green
B.	brown
C.	grey
D.	black
Answer» D. black

Discussion

937.	Bulbs give off electrical energy in the form of
A.	heat energy only
B.	light energy only
C.	heat and light energy
D.	magnetic energy
Answer» D. magnetic energy

Discussion

938.	When switch is closed, the magnet pulls out the
A.	splinter from eye
B.	eyeball
C.	lens of the eye
D.	retina
Answer» B. eyeball

Discussion

939.	In 1 minute, a 500W toaster consumes five times more energy than a
A.	200W kettle
B.	1000W iron
C.	100W bulb
D.	25W LED bulb
Answer» D. 25W LED bulb

Discussion

940.	To reduce the flow of current in an electric circuit and to avoid the danger of overheating resistor is used in a circuit which is called
A.	variable resistor
B.	thermistor
C.	transistor
D.	fixed resistor
Answer» E.

Discussion

941.	The most common process for manufacturing products from salt solution is
A.	distillation
B.	evaporation
C.	electrolysis
D.	thermal decomposition
Answer» D. thermal decomposition

Discussion

942.	The metal detectors that are used in malls, stations, airports and other commercial areas have
A.	magnets
B.	resistors
C.	fuses
D.	electromagnets
Answer» E.

Discussion

943.	When the sound waves reach our ear, we hear them as
A.	light waves
B.	electronic waves
C.	sound waves
D.	thermal waves
Answer» D. thermal waves

Discussion

944.	The charges stay where they are produced if the material is
A.	conductor
B.	insulator
C.	metal
D.	non metal
Answer» C. metal

Discussion

945.	The rise of temperature due to resistivity, used i
A.	heaters
B.	burners
C.	cookers
D.	volcanoes
Answer» B. burners

Discussion

946.	The process of decomposition by the use of electricity is known as
A.	separation
B.	electric separation
C.	electrolysis
D.	electric filtration
Answer» D. electric filtration

Discussion

947.	Plants material and waste from living things are regarded as
A.	fossils fuel
B.	bio mass
C.	coal
D.	crude
Answer» C. coal

Discussion

948.	Plants utilize water, carbon dioxide and light to produce their own food by
A.	respiration
B.	photosynthesis
C.	circulation
D.	transportation
Answer» C. circulation

Discussion

949.	Earth emits heat by eruptions of
A.	volcano
B.	hot springs
C.	geysers
D.	all of them
Answer» E.

Discussion

950.	Black painted panels which are hanged at roofs to trap heat and energy from sun, are
A.	solar cells
B.	solar heater
C.	solar furnace
D.	solar battery
Answer» C. solar furnace

Discussion

Explore topic-wise MCQs in Grade7.

Animals that depend on each other for living are called

The energy which is absorbed by the green plants, is about

Polar bears have sharp claws and hairy soles for

The basic need for survival is

All food chains begin with

During winter, dormant condition of insects is termed as

Skin keeps itself warm through

The flow of energy from producers to consumers forms a

Transfer of energy in a food chain is shown by

Carnivores are always

An example of habitat is

To dig the soil, moles have

Plants growing in drier conditions tend to have small numbers of stomata on their lower leaf surface to save

Swollen stem of cactus is important to

Herbivores are always

Polar bears have thick fur so that they can

Animals which depend on primary consumers are known as

A place where organisms can take shelter and reproduce is known as

The birds and animals that feed on dead decaying organisms are called

Humus can also be used by plants as a source of

Due to scarce supply of food, in winter animals

Fish have mucus on their overlapping scales to

A collection of multiple food chains is known as

To swim through water easily, fish have

To keep the fish floating in water, it requires

If the color of an insect is green, it has

In winter, some birds move to warmer places where there is more food, this is called

As the winter approaches, many plants

The feces and dead waste are food for

Small mammals like mice, rats and rabbits come out in night to avoid

During decomposition, the living material is broken down into

The name of the chemist who started plastic industry, is

'Ammonia' is an important component of

The exothermic reaction of two elements, iron and sulfur, form the compound,

Alteration of material without changing its chemical make-up is known as

The color of solid iron is

Bulbs give off electrical energy in the form of

When switch is closed, the magnet pulls out the

In 1 minute, a 500W toaster consumes five times more energy than a

To reduce the flow of current in an electric circuit and to avoid the danger of overheating resistor is used in a circuit which is called

The most common process for manufacturing products from salt solution is

The metal detectors that are used in malls, stations, airports and other commercial areas have

When the sound waves reach our ear, we hear them as

The charges stay where they are produced if the material is

The rise of temperature due to resistivity, used i

The process of decomposition by the use of electricity is known as

Plants material and waste from living things are regarded as

Plants utilize water, carbon dioxide and light to produce their own food by

Earth emits heat by eruptions of

Black painted panels which are hanged at roofs to trap heat and energy from sun, are