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Ecosystem Class 12 mcq. We covered all the Ecosystem Class 12 mcq in this post for free so that you can practice well for the exam.
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Ecosystem Class 12 Objective mcq for Students
Which of the following represents the correct order in a Food chain?
A) Diatoms → Crustaceans → Herrings
B) Crustaceans → Diatoms → Herrings
C) Diatoms → Herrings → Crustaceans
D) Crustaceans → Herrings → Diatoms
Option a – Diatoms → Crustaceans → Herrings
Which term is used to describe the density gradient found in a water body?
A) Ecocline
B) Halocline
C) Pycnocline
D) Thermocline
Option c – Pycnocline
Which statement regarding energy flow in an ecosystem is correct?
A) energy movement in the biosphere occurs in one direction only
B) energy circulation in the biosphere is cyclic
C) energy loss decreases at higher trophic levels
D) Organisms at higher trophic levels are more efficient in energy use
Option a – energy movement in the biosphere occurs in one direction only
What is the standard unit used to measure an ecological footprint?
A) Global hectares
B) Nanometer
C) Hoppus cubic foot
D) Cubic ton
Option a – Global hectares
The minimum land area needed to fully support an individual’s lifestyle is known as their
A) Biota
B) Ecological footprint
C) Biome
D) Niche
Option b – Ecological footprint
Who first introduced the concept of “Deep Ecology”?
A) E. P. Odum
B) C. Raunkiaer
C) F. E. Clements
D) Arne Naess
Option d – Arne Naess
The concept of an ecological niche was originally proposed by
A) Grinnell
B) Darwin
C) E. P. Odum
D) C. C. Park
Option a – Grinnell
According to the Millennium Ecosystem Assessment, which of the following is classified as a supporting ecosystem service?
A) Production of Food and water
B) Regulation of Climate and diseases
C) Nutrient cycling and pollination
D) Conservation of Biodiversity
Option c – Nutrient cycling and pollination
We covered all the ecosystem Class 12 mcq above in this post for free so that you can practice well for the exam.
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Also, check out:
- Environment and Ecology Test Series
- Ecology and Environment Vision IAS
- Environment and Ecology UPSC Syllabus
