Modification of responses of animals in response to enviroment within a short span of time …………

Explanation

Sesert plants are called xerophytes .They also have special photosynthetic phathway that enables their leaves are reduced to spines .Animals of dry areas may use metabolic water and reduce water loss by passing nearly solid facess and urine.
b. Xerophytes have special adaptiation to withstand prolonged period of and non - suculent pernnials.
c. The animals with variable temperature called poikilotherms are affected by temperature variations. They are also called ectotherms . They tivity winter eggs and migration .
d Sun is the ultimate source of energy for most of the organisms on this earth . Ligth is the visible range of electromagnetic spectrum . Light etc are alos influencing the growth of plants .
E. Animals live in arid regions show tow kind of adaptations