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The figure given below is a diagrammatic representation of response of organisms to abiotic factors. What do a, b and c represent respectively?
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A
(a) Regulator, (b) Conformer, (c) Partial regulator
B
(a) Conformer, (b) Regulator, (c) Partial regulator
C
(a) Regulator, (b) Partial regulator, (c) Conformer
D
(a) Partial regulator, (b) Regulator, (c) Conformer
Detailed Solution
The graph plots the internal level of a factor (e.g., body temperature or osmotic concentration) against the external level.
Line a is horizontal: the internal level stays constant whatever the external level, so the organism maintains homeostasis. It is a regulator (e.g., birds and mammals).
Line b is a straight diagonal: the internal level changes in direct proportion to the external level. It is a conformer (about 99% of animals and nearly all plants).
Line c stays constant over a limited range of the external level and beyond that range changes with it. It is a partial regulator.
Hence a is regulator, b is conformer and c is partial regulator.
Line a is horizontal: the internal level stays constant whatever the external level, so the organism maintains homeostasis. It is a regulator (e.g., birds and mammals).
Line b is a straight diagonal: the internal level changes in direct proportion to the external level. It is a conformer (about 99% of animals and nearly all plants).
Line c stays constant over a limited range of the external level and beyond that range changes with it. It is a partial regulator.
Hence a is regulator, b is conformer and c is partial regulator.