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.
The pointy things on a cactus are called spines.
Cactus
Generically they are called "cactus" plants or "cacti"
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 thistle is a plant that has sharp spines on it. There are certain types of finches and doves that eat it, as well as goats.
A cactus has no leaves but does have a stem.
Yes. Both the male and female echidna have equally sharp spines.
The cacti have spines (not thorns) and do not have leaves. There are also some plants in Africa and Asia that are similar to cacti but have thorns instead of spines.
they have the spines to protect them from your face