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Cacti have a wide root system, but it is not deep. This is because of the infrequency of rainfall in a desert. The cactus needs to absorb as much rain as possible when it can. A wider root system allows them to cover more surface area, and therefor, absorb more.

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12y ago
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15y ago

I can't tell you because in my own experience, they don't. But, plants with deep roots have them to get at the groundwater.

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15y ago

it is because in deserts there is a lack of water and the roots have to search for water so that is why the roots are so spread out.

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13y ago

The shallow root system is an adaptation to infrequent rains. In order to collect as much water as possible during a rare rainfall, the roots need to be as close to the surface as possible.

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13y ago

to ensure that it can trap and absorb even the smallest amount of rainfall - in a desert a deep tap-root system is not an advantage

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9y ago

This give the plant the ability to absorb water from even the slightest rain shower in the desert that may only soak into the soil a short distance.

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11y ago

From stretching to a source of water

To absorb capillary water from the top soil

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Q: Why do cacti have such shallow root systems?
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Does a cactus have shallow roots?

Some cacti have shallow roots. Other cacti have long tap roots.


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Some cacti have a tap root while others have a dense fibrous root system.


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