Thorns, spines
cactus and dates were the native plants of deserts
There is no adaptation of cactus plants underwater. The cactus plant is built to withstand light deprivation if it's a jungle cactus. It's built to withstand moisture deprivation if it's a desert cactus. But either way, the cactus can't tolerate excesses in the fulfillment of its moisture, light and heat requirements.Excess cold and damp soften and blacken cactus tissue. It's an open invitation to fungal problems. No cactus can withstand the large scale softening and blackening of its tissue by being subjected to the constant moisture of underwater living.
It's the thorns on cactus plants and roses that make them both difficult to hold. On both plants, the thorns serve to defend and protect the stem and the flower. But on the cactus, the thorn is a modified leaf. On a rose, the stem has both thorns and regular leaves.
The waste product found in cactus plants is usually latex, which can ooze out if a cactus is damaged or wounded. This sticky, milky substance helps the cactus protect itself from predators and heal its wounds.
Cactus, like other plants, uses photosynthesis to get energy.
Cactus plants hold water temporarily in their roots. They also hold it temporarily on their modified leaves. They hold it permanently in their stems.
No, a cactus has no leaves. Over millions of years the plant has evolved to adapt to its dry environment. The leaves have been turned into stout spines that help protect the plant and all photosynthesis takes place in the stem of the plants.
Yes, some cactus plants can be toxic to cats if ingested. It is important to keep cactus plants out of reach of cats to prevent any potential harm.
Cactus
Yes, Christmas cactus plants are non-toxic to cats.
Yes, holiday cactus plants are not considered toxic to cats.
No, the thick outer layer of a cactus doesn't help a cactus reproduce. Its main purpose is the prevention of evaporation or water loss from the cactus' inside contents of water, nutrient solutions, and energizing photosynthetic products. Instead, the most common forms of reproduction among cactus plants tend to be by their seeds, their jointed parts falling off and rooting, or their baby offsets.