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Consider the following four conditions (a – d) and select the correct pair of them as adaptation to environment in desert lizards.
The conditions:
(a) Burrowing in soil to escape high temperature
(b) Losing heat rapidly from the body during high temperature
(c) Bask in sun when temperature is low
(d) Insulating body due to thick fatty dermis
The conditions:
(a) Burrowing in soil to escape high temperature
(b) Losing heat rapidly from the body during high temperature
(c) Bask in sun when temperature is low
(d) Insulating body due to thick fatty dermis
A
(a), (b)
B
(c), (d)
C
(a), (c)
D
(b), (d)
Detailed Solution
Desert lizards lack the physiological ability that mammals have to deal with the high temperatures of their habitat.
They manage to keep their body temperature fairly constant by behavioural means.
They bask in the sun and absorb heat when their body temperature drops below the comfort zone, so (c) is correct.
They move into shade, or burrow into the soil, when the ambient temperature starts increasing, so (a) is correct.
They cannot lose heat rapidly by a physiological mechanism such as sweating, so (b) is wrong; a thick layer of fat (blubber) for insulation is an adaptation of aquatic mammals of cold seas such as seals, so (d) is wrong.
Hence the correct pair is (a) and (c).
They manage to keep their body temperature fairly constant by behavioural means.
They bask in the sun and absorb heat when their body temperature drops below the comfort zone, so (c) is correct.
They move into shade, or burrow into the soil, when the ambient temperature starts increasing, so (a) is correct.
They cannot lose heat rapidly by a physiological mechanism such as sweating, so (b) is wrong; a thick layer of fat (blubber) for insulation is an adaptation of aquatic mammals of cold seas such as seals, so (d) is wrong.
Hence the correct pair is (a) and (c).