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In cacti the leaves have become reduced ( to prevent water loss via transpiration) and the stem has become the photosynthetic body. Being in the stem there are no or very few stomata ( where water is lost from) and the water is able to be stored in the stem to help it survive long times without water.
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Is it true that The stem of the cactus is too thick to hold water?
No, actually the stem of a cactus is adapted to store water. The thick stem allows cacti to survive in dry desert climates by storing water for extended periods of time.
Why is the stem of cactus fleshy?
Cacti have thick, fleshy stems because water is stored in them. The stems are green so that cacti can live by photosynthesis, the process by which organisms containing chlorophyll transform light energy into chemical energy. ... Thick, waxy coating on succulent stems of cacti keeps water from evaporating from inside.
Why does the catus have such a thick outer covering and such a thick stem?
Cacti have thick stems and skins because they need to store water over long periods of time, and the liquid would evaporate quickly in deasert conditions.
Is cacti has fleshy stem?
no
Why does a cactus have thick stem?
Enlarged stems carry out photosynthesis and store water. Unlike many other succulents, the stem is the only part of a true cactus where this takes place. Much like many other plants that have waxy coatings on their leaves, Cacti often have a waxy coating on their stems to prevent water loss. This works by preventing water from spreading on the surface and allowing water to trickle down the stem to be absorbed by the roots and used for photosynthesis. Cacti have a thick, hard-walled, succulent stem - when it rains, water is stored in the stem. The stems are photosynthetic, green, and fleshy. The inside of the stem is either spongy or hollow (depending on the cactus). A thick, waxy coating keeps the water inside the cactus from evaporating.
What is a Thick stem?
An example of a thick stem is the edible stem of the Rhubarb plant.
What is cactus that stores water in its stem called?
A cactus that stores water in its stem is called a stem succulent. The stem has tissues that are capable storing large quantities of water. The stem also has a thick waterproof epidermis covered by a waxy cuticle that prevents loss of water due by evaporation. Examples of stem succulents - Cardon Cactus, Organ Pipe Cactus, Saguaro Cactus
Why do cacti have a thick cuticle?
For protection against fauna
Why do plants in the desert have thick leaves?
Plants in the desert have thick leaves to store water and reduce water loss through evaporation. The thick leaves also help to protect the plant from the intense sunlight and dry conditions in the desert environment.
How does the cactus produce food if the leaves are no longer able to do photosynthesis?
Cacti produce food through photosynthesis in their green stems, not their leaves. In cacti, the stems have chlorophyll and are adapted to conduct photosynthesis, allowing the plant to create its own food. This adaptation helps cacti survive in arid environments where water loss is a concern.
How could the spines on these barrel cacti help the cacti to survive?
The spines are an effective deterrent to herbivores, but also protect the plant stem. The spines increase the surface area available to collect moisture, an additionally help reflect the sun away from the stem and lower the stem temperature.
Were do cacti get their water?
Cacti get water from rainwater that is stored in the special roots of the cacti
