Cacti are adapted to living in desert and they can store lots of water. They have spikes to protect themselves from predators. Cacti are adapted to the desert as that is where they grow and therefore they need special features to live in that environment. Over time the cacti has adapted to hot, desert conditions which means that they can live in the desert without needing lots of water
A cactus has to withstand very dry, hot and cold temperatures. They have adapted over time to be able to survive in there climate. They do not lose much water; because their leaves have shrunk some have even disappeared altogether. Most cacti have a group of widely spread out shallow roots so that they can soak up the water quickly when it rains. In the hot desert this means they can exploit any water. The skin of the stem is waxy to reduce water loss. The prickly leaves on a cactus mean they cannot be eaten by animals. Lots of water is stored in the stem so that there is always a store when it is very dry. Cacti in the past would have had leaves and their roots would not be as long. Today however the cactus needs these features to survive in its habitat. In the desert there are few plants as over time plants have lost the battle of survival.
□ Their leaves are reduced to spines to reduce water loss; the minimum they get can be used. Their spines also keep predators away from them. □ They have roots that grow deep into the sand to absorb more water for the stem.
□ They have a thick fleshy stem to store water so they won’t die.
□ Their stem is long and thin rather than wide because the water they get from the sand would go upwards and into braches rather than spreading only in the stem. □ They also have a harder outer shell this is so animals won't be able to take the water out of the plant without a struggle
Cacti have to withstand very dry, hot and cold temperatures. This is how they do it: • They do not lose much water through transpiration, because their leaves have shrunk to small spines or leaves; some have even disappeared altogether. • Most cacti have a group of widely spread out shallow roots so that they can soak up the water quickly when it rains. • The skin of the stem is waxy to reduce water loss. • The prickly leaves on a cactus mean they cannot be eaten by animals. • Lots of water is stored in the stem so that there is always a store when it is very dry. • The inside of a cactus is either spongy or hollow, depending on the sort.
A cactus plant is forced to adapt to live in the hot, dry conditions of the desert. The cactus has adapted to theses conditions by creating a thick waxy layer on the outside of its stems and leaves, this helps to retain water and protect its tissue from intense sunlight. It provides food for insects however, some grow among the rocks to camouflage and protect themselves from being eaten by hungry animals. The spikes that grow on the outside of cacti are grown to protect them from predators, these spikes can be straight or hooked. Most cacti have a group of widely spread out shallow roots so that they can soak up the water quickly when it rains. When water is stored in a cactus, it is mainly stored in the stem so that there is always a store when it is very dry. Some cacti produce seeds and flowers, as they grow slowly, it could take up to a year for it to grow 1 inch.
The trunk is very thick so that it can store the water by collecting it up from the roots. During the dry season, this will provide the cactus with enough water to keep it alive and to make it able to photosynthesise. :)
-they have long roots that can stretch for miles - They have a thick stem which helps store as much water as possible - they have sharp spikes on the outside which help to protect the cactus from predators
Cactuses have extremely long roots to reach out through the sandy,rocky soil.these roots grow close to the surface collecting water.after a heavy rain these roots soak up and move large amounts of the water to the plant stem.all cactuses repoduce
Plants in the Cactaceae family are generally found in hot or cold deserts of the Americas, from Canada to Argentina.Their distinguishing feature, spines, are actually a form of leaves that have evolved into sharp, inedible points to protect the plant from browsers.
Cacti spines grow on leathery, liquid-filled "pads," stems, and joints that store water in drought. Thick skins prevent evaporation, and flowers are usually large and brightly colored -- or white, to attract nighttime pollinators like moths or bats.
While people usually associate cacti with deserts, they grow from sea level to the highest Andean peaks and even in jungles (as epiphytes). They range from a few inches to 50 feet tall, like the iconic saguaro with its large, branching "arms." It is the state flower of Arizona. Cacti exist only where seasonal water supplies are plentiful, like the summer monsoon areas of the West's high deserts. Gravelly soil is necessary to quickly carry off accumulated water, and cacti have long, corky roots close to the surface to capture runoff.
Carbon dioxide accumulated in the pads or stems is gradually released, accounting for cacti's slow growth; it can take as many as 25 years for a nub to grow a foot on a saguaro.
Cactus plants survive in near desert conditions, on apparently no water. They manage this because of several adaptations to their stems and leaves that they have developed over their long evolution.
Cacti look swollen because they have adapted their stems and leaves to store as much water as possible and to lose as little water as possible by evaporation. They also have a very thick and waxy cuticle which cuts down water loss to the absolute minimum.
Their leaves are reduced to spines, again to lose less water (flat leaves lose loads of water by evaporation). The whole of the stem is green and contains photosynthetic cells, so the plant does not need broad leaves to pick up light. There is plenty of light around anyway, so the plant can photosynthesise very well for most of the day.
Cacti DO need water to Survive (Guys who posted first!) and the needles they use poke the enemy if they try to attack the plant.
Also the green color on the Cacti can put other animals off, oh and never touch a cacti or you can be hurt it is like a needle at the doctors going in your arm but much faster.
Cactus or Cacti adapt in the desert in many ways. They stor a lot of water in their spikes and the actuall plan itself. They also have a harder outer shell this is so animals won't be able to take the water out of the plant without a stuggle.
Cacti are adapted to living in desert and they can store lots of water. They have spikes to protect themselves from predators. Cacti are adapted to the desert as that is where they grow and therefore they need special features to live in that environment. Over time the cacti has adapted to hot, desert conditions which means that they can live in the desert without needing lots of water.
Its roots are very deep in the ground drawing it from below the ground.it's spikes also lose less water and protect from animals that want to get the water from inside the plant.it also has a very thick skin so it can retain water for longer.But most of all the water need of cacti is very low any way
Their leaves have a waxy coating and spines to prevent water loss.(Leaves without spines lose loads of water).The stems are water storage and have photosynthetic cells to help make food just like the leaves.Also, the plant loses as little water as possible.The roots spread out widely and absorb as much water as they can.The spines of a cactus not only prevents water loss but also animals which eat them.(The spines are very sharp and can harm animals).
The cactus has incredibly small leaves to save as much energy as possible (by avoiding the need for photosynthesis) these small leaves act as thorns, to keep animals away and lastly, the cactus has a big trunk where it stores lots of water for it to survive.
It has developed a really thick skin so it can retain water for longer periods than other plants. It has spines to help protect it so that desert animals can not easily get the water from inside the cactus. The water needs of cacti are in general lesser than those of other plants.
They have swollen steams containing water storage tissue. Their leaves have become reduced to spines. This reduces the surface area of the leaf over which water can be lost. A thick waxy cuticle covers the plants surfaces and reduces transpiration. They have a shallow,spreading root system to quickly absorb any water from rain and over night condensation
Kangaroos lick there wrists which cools down the area around the veins and travels to the rest of the body, they also dig in the dirt and sit where they have dug as the sand there has not been hit by the sun and is cool. :)
They have adapted to their environment and they can store lots of water and they also have spikes to protect themselves from herbivores and can live for a long time
When there is a water source possible a cacti will store the water in itself. The spikes of a cacti protects itself, if a animal needed water it would not be able to receive it from the cacti for it has armor.
Cactuus spines keeps the plant from being eaten by most animals.cactus spines can be stort,long,soft or sharp.spines canbe straight or hooked. Some cactuses produce seeds and flowers.most cactuses grow very slow .it could take a year to grow 1 inches long.
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