Spine
No, sharp!
All sharp-spined progeny.
a cactus
Sharp sand or gravel.
That's a cactus
One of the many cactus species
The pointy things on a cactus are called spines.
Generically they are called "cactus" plants or "cacti"
It might've led to adaptations because their sharp fangs help them hunt for food or might scare predators away. For example, If they live in deserts, They need their sharp fangs to hunt organisms in cactus through the cactus throngs.
An organism is any living thing, so a cactus is an organism. This is because the cactus is a plant, and therefore a living thing. Organisms can be plants or animals (including bugs, too!) or even little microscopic bacteria!
one thing you can do is throw bowling water to the roots (bottom of the cactus) another thing you can do is throw some dirty car oil to the rootsDig it out from the roots.
The thorns on cacti are like seeds, if you want to reproduce a cactus you will probably need a green house, if you don't have a greenhouse you can take a plastic bag and poke small holes in it and drape it over the cactus. Cactus thorns are sharp and prickly they are a natural defence system.