Cactus can survive in hot, dry places because they have developed special abilities that allow them to conserve the water they do receive and make it last a long time. Most cactus have extensive, shallow root systems that allow them to soak up any rainfall that may come their way.
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Cactus plants have thick, fleshy stems that store water, allowing them to survive in hot climates with limited water availability. They also have a waxy coating on their stems to reduce water loss through evaporation. Their spines help to reduce water loss by providing shade and preventing herbivores from feeding on them.
It's skin does not allow much tranpiration, or loss of moisture. It is also believed that spines (thorns) shade the plant's surface. Many also have extensive and deep root systems or large root masses that collect water efficiently and store it.
They aren't affected much by heat just because they are use to it. They survive the dry by conserving water that they get and using it in tiny proportions.
Xerophytes: plants that are adapted to live in very dry climates
Cactus plants belong to the group of succulent plants, which are characterized by their ability to store water in their stems, leaves, or roots. Succulent plants have adapted to arid environments, making them well-suited to survive in conditions with limited water availability.
A cactus
Animals and plants that have adapted to temperate climates typically have features such as thick fur or feathers, hibernation abilities, and the ability to change colors. These adaptations help them cope with the seasonal changes in temperature, weather, and food availability that are characteristic of temperate climates.
Tropical plants, like palm trees and orchids, are typically unable to survive in cold climates due to their sensitivity to low temperatures. These plants are adapted to warm, humid environments and can be damaged or killed by frost or freezing temperatures.