what are the adaptation mechanisms of the trees and animals in the hot deserts?
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THEY HAVE THE ABILITY TO SURVIVE WITHOUT WATER FOR A VERY LONG TIME
Explanation:
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Adaptation for plants:
Roots:
- Modifications in shape or size
- Growth of large number of thin rootlets to penetrate small spaces in soil
- Long roots penetrating deep into the soil in order to get moisture
Stems:
- Modified into fleshy, spongy structure that can store moisture. Plants with such fleshy stem are called succulents.
- Performs photosynthesis
Leaf:
- Leaf becomes hard and waxy, thick & small, white and shiny
- Get converted into spines to reduce the loss of water (Cam pathway)
- Many xerophytic plants lie dormant for years without perishing, When rain eventually comes they pass through an entire cycle of germination, flowering, fruiting & seed dispersion in only a few days
- Photosynthesis can be done in night in plants like cactus
Adaptation for animals:
Camel (you already know camel's adaptations)
Kangaroo rat:
- Found in North American deserts
- Gets water as a byproduct from internal fat oxidation and preserves it by concentration of urine (so that minimum water is required to remove excretory produce)
- No requirement of water for many days
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