Ecosystem Class 12 MCQ Online Test With Answers Questions

Check the below NCERT MCQ Questions for Class 12 Biology Chapter 14 Ecosystem with Answers Pdf free download. MCQ Questions for Class 12 Biology with Answers were prepared based on the latest exam pattern. We have provided Ecosystem Class 12 Biology MCQs Questions with Answers to help students understand the concept very well.

Class 12 Biology Chapter 14 MCQ With Answers

Biology Class 12 Chapter 14 MCQs On Ecosystem

MCQ On Ecosystem Class 12 Chapter 14 Question 1.
Who introduced term Ecosystem?
(a) Leaneous
(b) Reiter
(c) Odum
(d) Aristle

Answer

Answer: (b) Reiter

Ecosystem Class 12 MCQ Chapter 14 Question 2.
Soil developed from sedimented rock:
(a) Force Science
(b) Edaphology
(c) Pedogenesis
(d) All of these

Answer

Answer: (c) Pedogenesis

Ecosystem MCQ Chapter 14 Class 12 Question 3.
Best soil for plant growth is:
(a) Grit
(b) Sandy
(c) Soily
(d) Clay

Answer

Answer: (d) Clay

MCQ On Ecosystem Chapter 14 Class 12 Question 4.
Soil particle determine the character of:
(a) Organisation
(b) Biomass
(c) Area capacity
(d) Soil plants

Answer

Answer: (a) Organisation

Ecosystem MCQ With Answers Chapter 14 Class 12 Question 5.
Plant roots soil water is:
(a) Cellular water
(b) Surface water
(c) Humidity water
(d) Gravitational water

Answer

Answer: (d) Gravitational water

MCQ Questions On Ecosystem Chapter 14 Class 12 Question 6.
Exchange of water in submerged plant:
(a) Stomata
(b) Normal surface
(c) Hydathode
(d) Lenticel

Answer

Answer: (b) Normal surface

MCQ On Ecosystem With Answers Pdf Chapter 14 Class 12 Question 7.
Submerged Rooted Hydrophyte are:
(a) Uticularia
(b) Prapa
(c) Nymphea
(d) Vallisnaria

Answer

Answer: (d) Vallisnaria

Ecosystem MCQs With Answers Chapter 14 Class 12 Question 8.
Water co-deficient contains:
(a) Large thin walled cells
(b) Large-vacuoles
(c) Membrane
(d) All of these

Answer

Answer: (c) Membrane

MCQ On Ecosystem With Answers Chapter 14 Class 12 Question 9.
Xerophyte Contains:
(a) Deep roots
(b) Sunken stomata
(c) Thick cuticle
(d) All of these

Answer

Answer: (d) All of these

MCQ On Ecosystem With Answers Pdf Download Chapter 14 Class 12 Question 10.
Small extremite animals of tropicalregion:
(a) Allen’s law
(b) Bergmen’s law
(c) Dollo’s law
(d) Cope’s law

Answer

Answer: (d) Cope’s law

Ecology MCQs With Answers Pdf Chapter 14 Class 12 Question 11.
Hibernation of some animals:
(a) Regular
(b) Periodic
(c) Suddenly
(d) Temporary

Answer

Answer: (a) Regular

MCQ On Energy Flow In Ecosystem Chapter 14 Class 12 Question 12.
Physical and chemical properties of soil studied by :
(a) Climatic factor
(b) Biotic factor
(c) Soil factor
(d) Topographic factor

Answer

Answer: (b) Biotic factor

Question 13.
Identity the Hetero Organism:
(a) Pistia
(b) Hydrilla
(c) Vallisnaria
(d) Casurina

Answer

Answer: (c) Vallisnaria

Question 14.
That animal who can bear one third loss of water of one third body weight is:
(a) Necturus
(b) Camel
(c) Wall Lizzard
(d) Kyton

Answer

Answer: (b) Camel

Question 15.
Root hair absent in:
(a) Hydrophyte
(b) Halophyte
(c) Mesophyte
(d) Heliophyte

Answer

Answer: (a) Hydrophyte

Question 16.
A water co-efficient Mesophyte is:
(a) Cappais
(b) Agave
(c) Acacia
(d) Hemeris

Answer

Answer: (b) Agave

Question 17.
Gravitated carried soil is:
(a) Alluvial
(b) Muddy
(c) Glacier
(d) Compound

Answer

Answer: (d) Compound

Question 18.
Kanha National Park is famous for:
(a) For Birds
(b) For Tendua
(c) For Tiger
(d) For Crocodile

Answer

Answer: (b) For Tendua

Question 19.
During food chain the maximum energy is stored in :
(a) Producers
(b) Decomposers
(c) Herbivoures
(d) Camivourse

Answer

Answer: (a) Producers

Question 20.
The average efficiency of energy transfer from herbivoure to carnivorce level is :
(a) 5%
(b) 10%
(c) 20%
(d) 30%

Answer

Answer: (b) 10%

Question 21.
Ecological pyramids were first devised by:
(a) Charles Eltom
(b) R. Hesse
(c) R.A. Lindemann
(d) Justus von Liebig

Answer

Answer: (a) Charles Eltom

Question 22.
Which of the following ecosystem has highest gross primary productivity:
(a) Grassland
(b) Coral reefs
(c) Mangrooves
(d) Rainforests

Answer

Answer: (b) Coral reefs

Question 23.
In the phosphorus cycle, weathring makes phosophate available first to:
(a) Producers
(b) Decomposers
(c) Consumers
(d) None of these

Answer

Answer: (a) Producers

Question 24.
Which types of the following pyramid are never inverted?
(a) Pyramid of energy
(b) Pyramid of biomass
(c) Pyramid of number
(d) Pyramid of dry biomass

Answer

Answer: (a) Pyramid of energy

Question 25.
Biosphere means:
(a) Atmosphere
(b) Lithosphere and ionosphered
(c) Atmosphere, lithosphere and hydrosphere
(d) Hydrosphere lithosphere and ionsophere

Answer

Answer: (c) Atmosphere, lithosphere and hydrosphere

Question 26.
Best type of pyramid which is always true is:
(a) Pyramid or energy
(b) Pyramid of Biomass
(c) Pyramid of number
(d) Both (a) and (c)

Answer

Answer: (a) Pyramid or energy

Question 27.
Decomposers are:
(a) Autotrophs
(b) Autohetrotrophs
(c) Organotrophs
(d) Heterotrophs

Answer

Answer: (d) Heterotrophs

Question 28.
The largest ecosystem is :
(a) Forest ecosystem
(b) Marine ecosystem
(c) Pond ecosystem
(d) Grassland ecosystem

Answer

Answer: (b) Marine ecosystem

Question 29.
More than 70 of world freshwater is contain in:
(a) Antarctica
(b) Glaciers and mountains
(c) Greenland
(d) Polar ice

Answer

Answer: (c) Greenland

Question 30.
Which one of the following pair is mismatched?
(a) Prairies-Epiphytes
(b) Tundra-Permafrost
(c) Savannaha-Acacia trees
(d) Coniferous forests-Evergreen trees)

Answer

Answer: (a) Prairies-Epiphytes

Question 31.
Which of the following is the most stable ecosystem?
(a) Mountain
(b) Desert
(c) Forest
(d) Ocean

Answer

Answer: (b) Desert

Question 32.
Primary succession occurs in :
(a) Primary succession occurs
(b) Previously unoccupied area
(c) Both of the above
(d) None of these

Answer

Answer: (b) Previously unoccupied area

Question 33.
Which one of the following is not used for construction of ecological pyramid?
(a) Dry weight
(b) Number of individuals
(c) Rate of energy flow
(d) Fresh weight

Answer

Answer: (a) Dry weight

Question 34.
What is the main cause of extinction of some species in tropical forests?
(a) Deforestation
(b) Afforestation
(c) Pollution
(d) Soil erosion

Answer

Answer: (a) Deforestation

Question 35.
Ecology deals with:
(a) The arth and plants
(b) The relationship between organisms and their environment
(c) Economical growth of poor people
(d) The life under sea

Answer

Answer: (b) The relationship between organisms and their environment

Question 36.
Shola forests are found in :
(a) Eastern Coast of Orissa
(b) North East Himalayas
(c) Western Ghats (Kerala)
(d) Decian Plateau

Answer

Answer: (c) Western Ghats (Kerala)

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