GENETICS AND EVOLUTION
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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an animal being active during the middle of the day
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a bird having dark feathers that absorb sunlight as heat
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a plant having a thick stem to store water
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a plant having large leaves to gather sunglight
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Detailed explanation-1: -Cactus survives in deserts due to following adaptations: It has a flat green stem to store water and prepare food by photosynthesis. The stem is also covered with a thick waxy layer, which helps to retain water. Its roots go very deep into the soil for absorbing water. Leaves turn into spines to prevent loss of water.
Detailed explanation-2: -Desert plants have developed three main adaptive strategies: succulence, drought tolerance and drought avoidance. Each of these is a different but effective suite of adaptations for prospering under conditions that would kill plants from other regions.
Detailed explanation-3: -Water Storage of Plants That Live In the Desert Some desert plants store water in their leaves, stems, or roots. Others have thick, waxy skin that helps prevent water loss. Some desert plants have small leaves that help reduce evaporation. Others have deep taproots that help them reach the underground water sources.
Detailed explanation-4: -Nocturnal desert animals keep cool by being active at night, whereas some other desert animals get away from the sun’s heat by digging underground burrows. Other common adaptations seen in desert animals include big ears, light-colored coats, humps to store fat, and adaptations that help conserve water.