No they don't. BEcause of their natural environment (the desert), where water is scarce, cacti develop shallow root systems. They are shallow, but they spread out, making it more likely that the plant would find surface water.
Cacti have very strong roots that go deep into the Earth searching for water. Since they go so far, they must be very strong. The stronger the roots, the deeper they search for water. Roots secure plants to the ground, but some can't. Cacti can.
Probably. Its roots go deep.
Taproot Watermelons feature a highly branching tap root extending up to 1 m deep into the soil. Some 15, occasionally more, lateral roots run from the main root. These, in turn, branch into smaller roots, resulting in an extensive root system which normally threads 7-10 m3 of soil 15 to 30 cm deep in the topsoil.
By evolution
Extremely carefully.
it absorbs more water
Cactus are a desert plant, and so need to send their roots deep down for their food.
it wouldnt unless it rained alot and the rain was absorbed deep into the ground for the roots of the cactus to drink.
Yes, the barrel cactus has roots.
Yes, a saguaro cactus has roots.
it has long roots that edge into the ground so deep that they can find water and feed
The roots of a cactus plant grow deep to find water in arid environments, while hickory tree roots spread wide to gather nutrients and water from a larger area. These root systems have evolved to help the plants survive in their respective habitats and optimize their access to necessary resources.
A Cactus has roots to absorb as much water as possible when it rain also to support the Cactus when it bad weather such as wind.
Cacti have very strong roots that go deep into the Earth searching for water. Since they go so far, they must be very strong. The stronger the roots, the deeper they search for water. Roots secure plants to the ground, but some can't. Cacti can.
No
Barrel cactus have fibrous roots
Cactus have fibrous thread like roots so they can absorb water even in the smallest quantity.