Desert plants are generally succulents or fleshy xerophytes. They are referred as drought resisting xerophytes eg: Opuntia, Bryophyllum, Euphorbia.
AIPMT - 1995
BIOXII13: ORGANISMS AND POPULATION
344015
Mark the incorrect statement.
1 Many fishes thrive in Antarctic water where temperature is always below zero.
2 Some microbes can survive in hot springs where temperature exceeds \(100^{\circ} \mathrm{C}\).
3 Deep sea fishes can survive even at a depth where pressure exceeds \(100 \mathrm{~atm}\).
4 Desert lizards have marvelous physiological ability to survive scorching heat of desert.
Explanation:
Desert lizards lack the physiological ability that mammals love to deal with the high temperature of their habitat but 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, but move into shade when the ambient temperature starts increasing.
Desert plants are generally succulents or fleshy xerophytes. They are referred as drought resisting xerophytes eg: Opuntia, Bryophyllum, Euphorbia.
AIPMT - 1995
BIOXII13: ORGANISMS AND POPULATION
344015
Mark the incorrect statement.
1 Many fishes thrive in Antarctic water where temperature is always below zero.
2 Some microbes can survive in hot springs where temperature exceeds \(100^{\circ} \mathrm{C}\).
3 Deep sea fishes can survive even at a depth where pressure exceeds \(100 \mathrm{~atm}\).
4 Desert lizards have marvelous physiological ability to survive scorching heat of desert.
Explanation:
Desert lizards lack the physiological ability that mammals love to deal with the high temperature of their habitat but 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, but move into shade when the ambient temperature starts increasing.