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.
Ecosystem Class 12 MCQs Questions with Answers
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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