The green stem stores the dissolved nutrients that are moved into it by the plant's spreading, shallow, fibrous roots. The nutrients include necessary minerals and trace elements. The stem also stores energizing photosynthetic products, from its interaction with sunlight. Photosynthetic products include life sustaining starches and sugars.
In cactus leaves are absent. Chlorophyll are found in trunk mainly.
The chlorophyll in the cactus's green stem and branches is responsible for photosynthesis, which is the process of creating food for the plant through the absorption of light energy. The food produced is stored in the form of sugars and starches, providing energy for growth and survival.
Water is stored in tissue in the stem of the cactus.
cactus have a hollow stem. it is where they store water and food for survival
A cactus makes food through the process of photosynthesis, like any other plant. The difference between a cactus making food from another plant is that cactus have their leaves reduced to spines, therefore, their stem contains chlorophyll and photosynthesis takes place through the stem.
light refraction of the presence of chlorophyll.
Because it has no true leaves, the only part of a typical cactus that can produce food via photosynthesis is the stem. Through evolution, the leaves have become modified and not form the spines of the cactus, loosing their ability to photosynthesise
cactus
Chlorophyll gives cactus stems their green color. A cactus has chlorophyll because of the stem's photosynthetic interaction with sunlight to make cactus foods. In many other plants, photosynthesis takes place in the leaves. But cactus needles don't offer a large enough surface for photosynthesis to take place or for photosynthetic byproducts to be stored. Instead, needles have reduced surface areas to stop surface evaporation of moisture. So photosynthesis instead must take place within the larger surface area of the stem.
Leafless cactus plants
Water, dissolved nutrients, and byproductsof photosynthesis are stored in the cactus stem. The water and the dissolved nutrients are sent up into the stem from the cactus plant's roots. They're held in the stem until they can be used in the photosynthetic interaction with sunlight. From that interaction are made the energizing carbohydrates, starches and sugars that the cactus needs for such activities as flowering, fruiting, growing, reproducing, and responding to stresses and stressors.
In the stems. It grows it's roots far out to get nutrients and water from the soil.