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 one of the following is the correct sequence of 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 of the following shows the density gradient of the water system?
A) Ecocline
B) Halocline
C) Pycnocline
D) Thermocline
Option c – Pycnocline
Which of the following statement is correct?
A) The energy flow in the biospheric ecosystem is unidirectional
B) The energy flows in the biospheric ecosystem are cyclical
C) Relative loss of energy in natural ecosystem decreases with increasing trophic levels
D) Species at progressively higher trophic levels appear to be less efficient in using available energy
Option a – The energy flow in the biospheric ecosystem is unidirectional
The measurement unit of the ecological footprint is
A) Global hectares
B) Nanometer
C) Hoppus cubic foot
D) Cubic ton
Option a – Global hectares
The minimum area of the land required to completely sustain the life of the person is called his
A) Biota
B) Ecological footprint
C) Biome
D) Niche
Option b – Ecological footprint
Who of the following used the term ‘deep ecology’ for the first time?
A) E.P. Odum
B) C. Raunkiaer
C) F.E. Clements
D) Arne Naess
Option d – Arne Naess
The concept of the ecological niche was enunciated by
A) Grinnell
B) Darwin
C) E.P. Odum
D) C.C. Park
Option a – Grinnell
The Millennium Ecosystem Assessment describes the following major categories of ecosystem services – provisioning, supporting, regulating, preserving, and cultural. Which one of the following is a supporting service?
A) Production of food and water
B) Control of climate and disease
C) Nutrient cycling and crop pollination
D) Maintenance of diversity
Option c – Nutrient cycling and crop 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
