49 + Mcqs in Biodiversity, ecology and environment Page 1 McqOptions

1.	Which of the following pairs is a sedimentary type of biogeochemical cycle?
A.	phosphorus and nitrogen
B.	phosphorus and sulphur
C.	oxygen and nitrogen
D.	phosphorus and carbon dioxide.
Answer» C. oxygen and nitrogen

Discussion

2.	In Minamata Bay Japan the animals which remained free from minamata disease, are
A.	dogs
B.	cats
C.	pigs
D.	rabbits.
Answer» E.

Discussion

3.	The Taj Mahal is threatened due to the effect of
A.	oxygen
B.	hydrogen
C.	chlorine
D.	sulphur-dioxide.
Answer» E.

Discussion

4.	The abundance of a species population, within its habitat, is called
A.	relative density
B.	regional density
C.	absolute density
D.	niche density.
Answer» E.

Discussion

5.	In a biotic community, the primary consumers are
A.	detritivores
B.	herbivores
C.	carnivores
D.	omnivores.
Answer» C. carnivores

Discussion

6.	If we completely remove the decomposers from an ecosystem, its functioning will be adversely affected, because
A.	mineral movement will be blocked
B.	the rate of decomposition will be very high
C.	energy flow will be blocked
D.	herbivores will not receive solar energy.
Answer» B. the rate of decomposition will be very high

Discussion

7.	When huge amount of sewage is dumped into a river, its B.O.D. will
A.	slightly decrease
B.	remain unchanged
C.	increase
D.	decrease.
Answer» D. decrease.

Discussion

8.	A disease caused by eating fish contaminated by industrial waste, containing mercury compounds, is called
A.	osteosclerosis
B.	Hashimoto’s oxidase
C.	Bright’s disease
D.	minimata disease.
Answer» E.

Discussion

9.	Sounds above what level are considered hazardous noise pollution?
A.	above 80 dB
B.	above 150 dB
C.	above 30 dB
D.	above 120 dB.
Answer» E.

Discussion

10.	The dominant second trophic level, in a lake ecosystem, is
A.	phytoplankton
B.	zooplankton
C.	benthos
D.	plankton.
Answer» C. benthos

Discussion

11.	Which one of the following gases contributes maximum to the green house effect’ on the earth?
A.	carbon dioxide
B.	chlorofluoro carbon
C.	Freon
D.	methane.
Answer» B. chlorofluoro carbon

Discussion

12.	Which among the following is likely to have the highest levels of D.D.T. depositions in its body?
A.	sea gull
B.	phytoplankton
C.	eel
D.	crab.
Answer» B. phytoplankton

Discussion

13.	Pyramid of numbers in a pond ecosystem is
A.	irregular
B.	inverted
C.	upright
D.	spindle shaped.
Answer» D. spindle shaped.

Discussion

14.	Pyramid of numbers deals with number of
A.	species in an area
B.	individuals in a community
C.	individuals in a tropic-level
D.	subspecies in a community.
Answer» D. subspecies in a community.

Discussion

15.	Association of animals when both partners are benefitted
A.	colony
B.	mutualism
C.	commensalism
D.	ammensalism.
Answer» C. commensalism

Discussion

16.	Soil best suited for plant growth is
A.	clay
B.	loam
C.	sandy
D.	gravel.
Answer» C. sandy

Discussion

17.	Study of inter-relationships between organisms and their environment is
A.	ecology
B.	ecosystem
C.	phytogeography
D.	ethology.
Answer» B. ecosystem

Discussion

18.	American water plant that has become a troublesome water weed in India
A.	Cyperus rotundus
B.	Eichhornia crassipes
C.	Typha latifolia
D.	Trapa bispinosa.
Answer» C. Typha latifolia

Discussion

19.	Ultraviolet radiations from sunlight causes a reaction that produces
A.	fluorides
B.	carbon monoxide
C.	sulphur dioxide
D.	ozone.
Answer» E.

Discussion

20.	Soil particles determine its
A.	texture
B.	field capacity
C.	water holding capacity
D.	soil flora.
Answer» B. field capacity

Discussion

21.	A fertile agricultural soil appears deep coloured at the surface as compared to soil one metre down. The reason for colour of top soil is
A.	more moisture
B.	rich in organic matter
C.	rich in iron, calcium and magnesium
D.	recent formation.
Answer» C. rich in iron, calcium and magnesium

Discussion

22.	River water deposits
A.	loamy soil
B.	alluvial soil
C.	laterite soil
D.	sandy soil
Answer» C. laterite soil

Discussion

23.	Water is a resource that is
A.	nondegradable nonmaintainabie
B.	degradable maintainable
C.	renewable
D.	non-renewable.
Answer» D. non-renewable.

Discussion

24.	Soil fertility is reduced by
A.	crop rotation
B.	nitrogen fixing bacteria
C.	decaying organic matter
D.	intensive agriculture.
Answer» E.

Discussion

25.	Minerals and metals are
A.	biodegradable resources
B.	renewable
C.	non-renewable
D.	renewable and nonrenewable resources.
Answer» E.

Discussion

26.	Petroleum is a
A.	synthetic product
B.	renewable resource
C.	nonrenewable resource
D.	nonrenewable resource
Answer» D. nonrenewable resource

Discussion

27.	Most hazardous metal pollutant of automobile exhausts is
A.	mercury
B.	cadmium
C.	lead
D.	copper.
Answer» D. copper.

Discussion

28.	Pick up the correct food chain
A.	grass —> chamelion —> insect —> bird
B.	grass —> fox —> rabbit —» bird
C.	phytoplankton —> zooplankton —> fish
D.	fallen leaves —> bacteria —> insect larvae.
Answer» D. fallen leaves —> bacteria —> insect larvae.

Discussion

29.	Food chain in which microorganisms breakdown the food formed by primary producers is
A.	parasitic food chain
B.	detritus food chain
C.	consumer food chain
D.	predator food chain.
Answer» C. consumer food chain

Discussion

30.	Which one is true?
A.	commensalism when none of the interacting populations affect each other
B.	symbiosis when the interaction is useful to both the populations
C.	symbiosis when neither populations affects each other
D.	commensalism when the interaction is useful to both the populations.
Answer» C. symbiosis when neither populations affects each other

Discussion

31.	Soil water available to roots is
A.	surface water
B.	hygroscopic water
C.	gravitational water
D.	capillary water.
Answer» E.

Discussion

32.	Deep black soil is productive due to high proportion of
A.	sand and zinc
B.	gravel and calcium
C.	clay and humus
D.	silt and earthworm.
Answer» D. silt and earthworm.

Discussion

33.	Homeostasis is
A.	tendency of biological systems to change with change in environment
B.	tendency of biological systems to resist change
C.	disturbance of self regulatory system and natural controls
D.	biotic materials used in homeopathic medicines.
Answer» C. disturbance of self regulatory system and natural controls

Discussion

34.	Renewable source of energy is
A.	biomass
B.	coal
C.	petroleum
D.	kerosene.
Answer» B. coal

Discussion

35.	A non-renewable resource is
A.	nonrenewable nonconventional energy source
B.	nonrenewable conventional energy source
C.	renewable nonconventional energy source
D.	renewable conventional energy source.
Answer» C. renewable nonconventional energy source

Discussion

36.	Acid rain is due to increase in atmospheric concentration of
A.	ozone and dust
B.	CO2 and CO
C.	SO2 and CO
D.	SO2 and NO2.
Answer» E.

Discussion

37.	Domestic waste constitutes
A.	nonbiodegradable pollution
B.	biodegradable pollution
C.	effluents
D.	air pollution
Answer» B. biodegradable pollution

Discussion

38.	Pyramid of numbers in a grassland/tree ecosystem
A.	always inverted
B.	always upright
C.	both (a) and (b)
D.	spindle-shaped.
Answer» C. both (a) and (b)

Discussion

39.	Deforestation will decrease
A.	soil erosion
B.	soil fertility
C.	land slides
D.	rainfall.
Answer» E.

Discussion

40.	Gas released during Bhopal tragedy was
A.	methyl isocyanate
B.	potassium isothiocyanate
C.	sodium isothiocyanate
D.	ethyl isothiocyante.
Answer» B. potassium isothiocyanate

Discussion

41.	Major aerosol pollutant in jet plane emission is
A.	sulphur dioxide
B.	carbon monoxide
C.	methane
D.	fluorocarbon.
Answer» E.

Discussion

42.	The relation between algae and fungi in lichen is
A.	symbiosis
B.	parasitism
C.	commenalism
D.	protocooperation.
Answer» B. parasitism

Discussion

43.	Soil conservation is
A.	conversion of sterile soil into fertile one
B.	aeration of soil
C.	erosion of soil
D.	protection against loss.
Answer» E.

Discussion

44.	Green house effect is warming due to
A.	infra-red rays reaching earth
B.	moisture layer in atmosphere
C.	increase in temperature due to increase in carbon dioxide concentration of atmosphere
D.	ozone layer of atmosphere.
Answer» D. ozone layer of atmosphere.

Discussion

45.	in an ecosystem, which one shows one-way passage
A.	free energy
B.	carbon
C.	nitrogen
D.	potassium.
Answer» B. carbon

Discussion

46.	What is true of ecosystem?
A.	primary consumers are least dependent upon producers
B.	primary consumers out-number producers
C.	producers are more than primary consumers
D.	secondary consumers are the largest and most powerful.
Answer» D. secondary consumers are the largest and most powerful.

Discussion

47.	A mutually beneficial association necessary for survival of both partners is
A.	mutualism/symbiosis
B.	commensalism
C.	amensalism
D.	both A and B.
Answer» B. commensalism

Discussion

48.	Competition for light, nutrients and space is most severe between
A.	closely related organism growing in different niches
B.	closely related organisms growing in the same area/niche
C.	distantly related organisms growing in the same habitat
D.	distantly related organisms growing in different niches. (1988)
Answer» C. distantly related organisms growing in the same habitat

Discussion

49.	Upper part of sea/aquatic ecosystem contains
A.	plankton
B.	nekton
C.	plankton and nekton
D.	benthos.
Answer» B. nekton

Discussion

Explore topic-wise MCQs in VITEEE.

&nbsp;Which&nbsp;of&nbsp;the&nbsp;following&nbsp;pairs&nbsp;is&nbsp;a&nbsp;sedimentary&nbsp;type&nbsp;of&nbsp;biogeochemical&nbsp;cycle?

In&nbsp;Minamata&nbsp;Bay&nbsp;Japan&nbsp;the&nbsp;animals&nbsp;which&nbsp;remained&nbsp;free&nbsp;from&nbsp;minamata&nbsp;disease,&nbsp;are

The&nbsp;Taj&nbsp;Mahal&nbsp;is&nbsp;threatened&nbsp;due&nbsp;to&nbsp;the&nbsp;effect&nbsp;of

The&nbsp;abundance&nbsp;of&nbsp;a&nbsp;species&nbsp;population,&nbsp;within&nbsp;its&nbsp;habitat,&nbsp;is&nbsp;called

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If&nbsp;we&nbsp;completely&nbsp;remove&nbsp;the&nbsp;decomposers&nbsp;from&nbsp;an&nbsp;ecosystem,&nbsp;its&nbsp;functioning&nbsp;will&nbsp;be&nbsp;adversely&nbsp;affected,&nbsp;because

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Sounds&nbsp;above&nbsp;what&nbsp;level&nbsp;are&nbsp;considered&nbsp;hazardous&nbsp;noise&nbsp;pollution?

&nbsp;The&nbsp;dominant&nbsp;second&nbsp;trophic&nbsp;level,&nbsp;in&nbsp;a&nbsp;lake&nbsp;ecosystem,&nbsp;is

&nbsp;Which&nbsp;one&nbsp;of&nbsp;the&nbsp;following&nbsp;gases&nbsp;contributes&nbsp;maximum&nbsp;to&nbsp;the&nbsp;green&nbsp;house&nbsp;effect&rsquo;&nbsp;on&nbsp;the&nbsp;earth?

Which&nbsp;among&nbsp;the&nbsp;following&nbsp;is&nbsp;likely&nbsp;to&nbsp;have&nbsp;the&nbsp;highest&nbsp;levels&nbsp;of&nbsp;D.D.T.&nbsp;depositions&nbsp;in&nbsp;its&nbsp;body?

&nbsp;Pyramid&nbsp;of&nbsp;numbers&nbsp;in&nbsp;a&nbsp;pond&nbsp;ecosystem&nbsp;is

Pyramid&nbsp;of&nbsp;numbers&nbsp;deals&nbsp;with&nbsp;number&nbsp;of

&nbsp;Association&nbsp;of&nbsp;animals&nbsp;when&nbsp;both&nbsp;partners&nbsp;are&nbsp;benefitted

Soil&nbsp;best&nbsp;suited&nbsp;for&nbsp;plant&nbsp;growth&nbsp;is

&nbsp;Study&nbsp;of&nbsp;inter-relationships&nbsp;between&nbsp;organisms&nbsp;and&nbsp;their&nbsp;environment&nbsp;is

American&nbsp;water&nbsp;plant&nbsp;that&nbsp;has&nbsp;become&nbsp;a&nbsp;troublesome&nbsp;water&nbsp;weed&nbsp;in&nbsp;India

&nbsp;Ultraviolet&nbsp;radiations&nbsp;from&nbsp;sunlight&nbsp;causes&nbsp;a&nbsp;reaction&nbsp;that&nbsp;produces

&nbsp;Soil&nbsp;particles&nbsp;determine&nbsp;its

A&nbsp;fertile&nbsp;agricultural&nbsp;soil&nbsp;appears&nbsp;deep&nbsp;coloured&nbsp;at&nbsp;the&nbsp;surface&nbsp;as&nbsp;compared&nbsp;to&nbsp;soil&nbsp;one&nbsp;metre&nbsp;down.&nbsp;The&nbsp;reason&nbsp;for&nbsp;colour&nbsp;of&nbsp;top&nbsp;soil&nbsp;is

&nbsp;River&nbsp;water&nbsp;deposits

Water&nbsp;is&nbsp;a&nbsp;resource&nbsp;that&nbsp;is

Soil&nbsp;fertility&nbsp;is&nbsp;reduced&nbsp;by

Minerals&nbsp;and&nbsp;metals&nbsp;are

&nbsp;Petroleum&nbsp;is&nbsp;a

Most&nbsp;hazardous&nbsp;metal&nbsp;pollutant&nbsp;of&nbsp;automobile&nbsp;exhausts&nbsp;is

&nbsp;Pick&nbsp;up&nbsp;the&nbsp;correct&nbsp;food&nbsp;chain

Food&nbsp;chain&nbsp;in&nbsp;which&nbsp;microorganisms&nbsp;breakdown&nbsp;the&nbsp;food&nbsp;formed&nbsp;by&nbsp;primary&nbsp;producers&nbsp;is

Which&nbsp;one&nbsp;is&nbsp;true?

Soil&nbsp;water&nbsp;available&nbsp;to&nbsp;roots&nbsp;is

Deep&nbsp;black&nbsp;soil&nbsp;is&nbsp;productive&nbsp;due&nbsp;to&nbsp;high&nbsp;proportion&nbsp;of

Homeostasis&nbsp;is

Renewable&nbsp;source&nbsp;of&nbsp;energy&nbsp;is

A&nbsp;non-renewable&nbsp;resource&nbsp;is

&nbsp;Acid&nbsp;rain&nbsp;is&nbsp;due&nbsp;to&nbsp;increase&nbsp;in&nbsp;atmospheric&nbsp;concentration&nbsp;of

Domestic&nbsp;waste&nbsp;constitutes

Pyramid&nbsp;of&nbsp;numbers&nbsp;in&nbsp;a&nbsp;grassland/tree&nbsp;ecosystem

&nbsp;Deforestation&nbsp;will&nbsp;decrease

&nbsp;Gas&nbsp;released&nbsp;during&nbsp;Bhopal&nbsp;tragedy&nbsp;was

Major&nbsp;aerosol&nbsp;pollutant&nbsp;in&nbsp;jet&nbsp;plane&nbsp;emission&nbsp;is

The&nbsp;relation&nbsp;between&nbsp;algae&nbsp;and&nbsp;fungi&nbsp;in&nbsp;lichen&nbsp;is

Soil&nbsp;conservation&nbsp;is

Green&nbsp;house&nbsp;effect&nbsp;is&nbsp;warming&nbsp;due&nbsp;to

in&nbsp;an&nbsp;ecosystem,&nbsp;which&nbsp;one&nbsp;shows&nbsp;one-way&nbsp;passage

What&nbsp;is&nbsp;true&nbsp;of&nbsp;ecosystem?

A&nbsp;mutually&nbsp;beneficial&nbsp;association&nbsp;necessary&nbsp;for&nbsp;survival&nbsp;of&nbsp;both&nbsp;partners&nbsp;is

Competition&nbsp;for&nbsp;light,&nbsp;nutrients&nbsp;and&nbsp;space&nbsp;is&nbsp;most&nbsp;severe&nbsp;between

Upper&nbsp;part&nbsp;of&nbsp;sea/aquatic&nbsp;ecosystem&nbsp;contains

Which of the following pairs is a sedimentary type of biogeochemical cycle?

In Minamata Bay Japan the animals which remained free from minamata disease, are

The Taj Mahal is threatened due to the effect of

The abundance of a species population, within its habitat, is called

In a biotic community, the primary consumers are

If we completely remove the decomposers from an ecosystem, its functioning will be adversely affected, because

When huge amount of sewage is dumped into a river, its B.O.D. will

A disease caused by eating fish contaminated by industrial waste, containing mercury compounds, is called

Sounds above what level are considered hazardous noise pollution?

The dominant second trophic level, in a lake ecosystem, is

Which one of the following gases contributes maximum to the green house effect’ on the earth?

Which among the following is likely to have the highest levels of D.D.T. depositions in its body?

Pyramid of numbers in a pond ecosystem is

Pyramid of numbers deals with number of

Association of animals when both partners are benefitted

Soil best suited for plant growth is

Study of inter-relationships between organisms and their environment is

American water plant that has become a troublesome water weed in India

Ultraviolet radiations from sunlight causes a reaction that produces

Soil particles determine its

A fertile agricultural soil appears deep coloured at the surface as compared to soil one metre down. The reason for colour of top soil is

River water deposits

Water is a resource that is

Soil fertility is reduced by

Minerals and metals are

Petroleum is a

Most hazardous metal pollutant of automobile exhausts is

Pick up the correct food chain

Food chain in which microorganisms breakdown the food formed by primary producers is

Which one is true?

Soil water available to roots is

Deep black soil is productive due to high proportion of

Homeostasis is

Renewable source of energy is

A non-renewable resource is

Acid rain is due to increase in atmospheric concentration of

Domestic waste constitutes

Pyramid of numbers in a grassland/tree ecosystem

Deforestation will decrease

Gas released during Bhopal tragedy was

Major aerosol pollutant in jet plane emission is

The relation between algae and fungi in lichen is

Soil conservation is

Green house effect is warming due to

in an ecosystem, which one shows one-way passage

What is true of ecosystem?

A mutually beneficial association necessary for survival of both partners is

Competition for light, nutrients and space is most severe between

Upper part of sea/aquatic ecosystem contains