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Cactus spines prevent moisture loss from plants. Spines also defend the plants from grazing animals. The spines are just modified leaves.

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What environmental pressures do cactus's have?

Cacti occasionally suffer from the pressures of drought and other animals. Birds and mammals try to get the water from the cacti so THEY can survive. This is why cacti have thorns.


What are examples of plants that have thorns?

Examples of plants that have thorns include roses, cacti, bougainvillea, and blackberries. Thorns are typically used by plants as a defense mechanism against herbivores.


What is a sentence using cacti?

The horticulture students were amazed at the variety of cacti present in the Arizona desert.


What are succulent plants with thorns that are common in desert?

In the Old World there are a number of species of euphorbias and other genera that have thorns. In the new world (Americas) cacti have spines (not thorns) but are succulents.


What is the function of leaves on a cactus?

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What bush has red and yellow blooms and thorns?

Roses, prickly pear cacti, Jumping cactus (cholla)


What flowering plants have thorns?

most cacti flower, plus roses and some times if you get lucky ivy does


What is found in sandy soil and has thorns?

Cacti grow in sandy soil and have thorns.Another Answer:In North American Deserts, such plants as white thorn acacia, cat claw acacia, mesquite and ocotillo have thorns and grow in sandy soil. Cacti have spines and grow in sandy soil.


What environmental pressure does a cactus has?

Cacti occasionally suffer from the pressures of drought and other animals. Birds and mammals try to get the water from the cacti so THEY can survive. This is why cacti have thorns.


Which plants have weapons?

Brambles and roses have thorns. Cacti have sharp spines and holly has spikey leaves. This is to stop animals from eating them.


Which desert plant has thorns but is without leaves?

The ocotillo plant is a common desert plant found in the southwestern United States and Mexico that has thorns but is without leaves. It is known for its long, vertical stems covered in sharp spines, which help reduce water loss and protect the plant from herbivores. The plant produces leaves only after a rainfall to maximize its photosynthetic potential.


What type of plant lives in a desert and has sharp spines?

Cacti live in the deserts of the Americas and many have sharp spines. In Africa there are other plants, euphorbias for example, that resemble cacti but have thorns rather than spines.