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Ecosystem

138 Questions Start Allen Test
All Exams Allen
Q1 Allen (Conceptual Questions) MCQ
Ecosystem term coined by :-
A.
Odum
B.
Mishra
C.
Reiter
D.
Tansley
Q2 Allen (Conceptual Questions) MCQ
Which one is not a functional aspect of ecosystem?
A.
Energy flow
B.
Productivity
C.
Decomposition
D.
Stratification
Q3 Allen (Conceptual Questions) MCQ
The minimum energy is stored at which of the following trophic level in any ecosystem
A.
Carnivores
B.
Herbivores
C.
Producers
D.
Decomposers
Q4 Allen (Conceptual Questions) MCQ
The source of energy in an ecosystem is :-
A.
Sunlight
B.
DNA
C.
ATP
D.
RNA
Q5 Allen (Conceptual Questions) MCQ
Ecosystem may be defined as :-
A.
A localized association of several plants and animals
B.
Different communities of plants, animals and microbes together with their physico-chemical environment.
C.
Different communities of plants and microbes along with their physicochemical environment
D.
None of the above
Q6 Allen (Conceptual Questions) MCQ
The importance of ecosystem lies in: -
A.
Flow of energy
B.
Cycling of materials
C.
Both the above
D.
None of the above
Q7 Allen (Conceptual Questions) MCQ
Ecosystem is:-
A.
Any functional unit that includes the whole community in a given area interacting with the abiotic factors
B.
A group of green plants
C.
A group of animals interacting with environment
D.
Man and pets living together
Q8 Allen (Conceptual Questions) MCQ
Who proposed that ecosystem is symbol of structure & function of nature :-
A.
Gardner
B.
Odum
C.
Tansley
D.
Reiter
Q9 Allen (Conceptual Questions) MCQ
Largest ecosystem of the world are: -
A.
Forests
B.
Grass lands
C.
Great lakes
D.
Oceans
Q10 Allen (Conceptual Questions) MCQ
Which of the following is a manmade artificial ecosystem?
A.
Grassland ecosystem
B.
Forest ecosystem
C.
Ecosystem of artificial lakes & dams
D.
None of these
Q11 Allen (Conceptual Questions) MCQ
Nepenthes (Insectivorous pitcher plant) is:
A.
Producer
B.
Consumer
C.
Both (1) & (2)
D.
None of these
Q12 Allen (Conceptual Questions) MCQ
Which one is omnivorous?
A.
Cow
B.
Lion
C.
Deer
D.
Man
Q13 Allen (Conceptual Questions) MCQ
Which biotic components mainly help in recycling of minerals?
A.
Producers
B.
Consumers
C.
Decomposers
D.
All the above
Q14 Allen (Conceptual Questions) MCQ
Trophic levels are formed by :-
A.
Only plants
B.
Only carnivores
C.
Only animals
D.
Organisms linked in food chain
Q15 Allen (Conceptual Questions) MCQ
In a forest ecosystem green plants are :-
A.
Primary producers
B.
Consumers
C.
Primary consumers
D.
Decomposers
Q16 Allen (Conceptual Questions) MCQ
In an ecosystem the function of the producers is to :-
A.
Convert organic compounds into inorganic compounds
B.
Trap solar energy and convert it into chemical energy
C.
Utilize chemical energy
D.
Release energy
Q17 Allen (Conceptual Questions) MCQ
With regard to ecological food chain, man is a :-
A.
Consumer
B.
Producer
C.
Both consumer & producer
D.
Decomposer
Q18 Allen (Conceptual Questions) MCQ
A plant, being eaten by a herbivore which in turn is eaten by a carnivore makes :-
A.
Food chain
B.
Web of Food
C.
Omnivores
D.
Interdependence
Q19 Allen (Conceptual Questions) MCQ
When peacock, eats snake which eats insects depends on green plants, the peacock is?
A.
A primary consumer
B.
A primary decomposer
C.
A final decomposer of plants
D.
The apex of the food pyramid
Q20 Allen (Conceptual Questions) MCQ
If we completely remove decomposers from an ecosystem, the ecosystem functioning will be adversely affected because: -
A.
Mineral movement will be blocked
B.
Herbivores will not receive solar energy
C.
Energy flow will be blocked
D.
Rate of decomposition of other components will be very high
Q21 Allen (Conceptual Questions) MCQ
Path of energy flow in an ecosystem is :-
A.
Herbivorous ā†’ producer ā†’
carnivorous ā†’ decomposer
B.
Herbivorous ā†’ carnivorous ā†’
producer ā†’ decomposer
C.
Producer ā†’ carnivorous ā†’
herbivorous ā†’ decomposer
D.
Producer ā†’ herbivorous ā†’
carnivorous ā†’ decomposer
Q22 Allen (Conceptual Questions) MCQ
Pyramids of energy are :-
A.
Always upright
B.
Always Inverted
C.
Mostly upright
D.
Mostly inverted
Q23 Allen (Conceptual Questions) MCQ
The ecological pyramid of numbers in pond ecosystem is :-
A.
Upright
B.
Inverted
C.
May upright or Inverted
D.
First upright then inverted
Q24 Allen (Conceptual Questions) MCQ
An ecosystem resists change because it is in a state of :-
A.
Homoeostasis
B.
Regular Illumination
C.
Static Imbalance
D.
Food accumulation
Q25 Allen (Conceptual Questions) MCQ
What is true about any ecosystem?
A.
It is self-regulatory
B.
It is self-sustained
C.
Top carnivores have climax trophic level position
D.
All of these above