Cactus needles have a number of functions.
Firstly, because cactus plants live in deserts and semi-arid areas, the needles reduce the loss of moisture that normally occurs through evaporation. As the cactus is a "flowering plant", like all plants in this family it has leaves, but in this case, the leaves are the needles. there is very little surface area on the needles, so less moisture is lost through evaporation.
Because of the shape of the needles, they also help capture whatever moisture is available. Dew and other forms of precipitation will tend to drip from the needles to the soil directly around the roots of a cactus, enabling the roots to utilise as much of the moisture as possible.
Cactus needles also deter plant-eating animals.
The needles act like a protective shield for a cactus, without it predators (birds mostly) would be able to easily eat it.
they always absorb sunlight, and sorry no other answers. Never touch a cactus!
Quil is to porcupine as spine is to cactus
because it helps bring precipitation to the cactus...
A cactus' waxy skin helps it retain moisture in desert climates.
protects it from predators.
A spine.
'Spine' is another word for 'thorn'.
Flowers help cactus plants survive in the desert by attracting pollinators. Because of pollination, the cactus plants may have fruits full of seeds. For example, the giant saguaro cactus [Carnegiea gigantea] depends upon bats for pollination of its huge, light colored bat blossoms.
Spine
The stem of a cactus is able to store water during rainy periods for use during a drought.
no,a cactus can't survive in northpole because it will become frozen and it would die. Cactus can almostly survive in any climate. In northpole it is very cold and the cactus is not adapted to low temperatures. Cactus need warmth and in northpole there is freezing weather and freezing water, cactus can't survive in northpole.
it helps because
stem. if i am wrong please correct me