AP BIOLOGY

ECOLOGY

BIOMES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which adaptation helps desert plants quickly gather water after a rain?
A
Branch-like limbs covered with bark
B
Wide, thin leaves growing near the ground
C
Thorns and needles growing on the stem
D
Long roots close to the surface of the soil
Explanation: 

Detailed explanation-1: -Cacti have shallow and wide fibrous roots close to the surface to quickly absorb rainwater.

Detailed explanation-2: -The roots of desert plants are also adapted to help them survive. Some plants have shallow, widespread roots to absorb a maximum of rainfall moisture. Others have deep taproots to get water that is deep underground.

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: -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-5: -The two adaptations of desert plants that enable them to survive a scarcity of water are: Desert plants have fleshy stems, known as succulent stems, that can store water. The leaves of many desert plants, such as cacti are modified into spines to reduce loss of water.

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