One of the many cactus species
a cactus
That's a cactus
Cacti live in the deserts of the Americas and many have sharp spines. In Africa there are other plants, euphorbias for example, that resemble cacti but have thorns rather than spines.
Yes, sharp spines on plants are an adaptation that helps deter herbivores from feeding on them. These spines can act as a physical barrier to protect the plant from being eaten. Additionally, sharp spines can also help to reduce water loss by reducing surface area on the plant.
The pointy things on a cactus are called spines.
The ocotillo plant is a common desert plant found in the southwestern United States and Mexico that has thorns but is without leaves. It is known for its long, vertical stems covered in sharp spines, which help reduce water loss and protect the plant from herbivores. The plant produces leaves only after a rainfall to maximize its photosynthetic potential.
Cactus
Generically they are called "cactus" plants or "cacti"
One common succulent plant with thorns in desert biomes is the Barrel Cactus (Ferocactus). This plant has thick stems covered in sharp spines that help protect it from predators. Another example is the Ocotillo (Fouquieria splendens), which is a spiny desert succulent that grows long, thorny branches.
yes, it is, the leaf of a cacti plant is modified into spines in order to reduce transpiration. This is a method of desert adaptation.
A cactus has no leaves but does have a stem.
Yes. Both the male and female echidna have equally sharp spines.