Blossfeldia Liliputana
The prickly pear cactus (Opuntia spp.) produces edible fruit called prickly pears or tunas. The fruit is commonly used in various culinary dishes and can be eaten raw.
The smallest bone in the body is in your ear and is called the stirrup bone (stapes).
Microevolution.
Cacti have fibrous roots to efficiently absorb water from the soil and store it in their stems for extended periods of time, helping them survive in arid environments with limited water availability. The fibrous root system also helps anchor the cactus in the sandy or rocky soils where they typically grow.
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
Cactus have fibrous thread like roots so they can absorb water even in the smallest quantity.
They are actually called 'Cactus Flowers'
The fishhook cactus may be either the fishhook barrel cactus (Ferocactus wislizenii) or Mammillaria dioica, also called the strawberry cactus or California fishhook cactus.
A labeled part of a cactus is a body part that can be identified on a diagram of the inside and outside of the cactus. The diagram breaks each part of the cactus down to its smallest known level of existence. For example, labeled parts of the cactus' flower include the stigma, the stamen, and the anther.
Cactus is called "टींटली" (Tintalee) in Hindi.
A spine.
Glochids. The spikes on a cactus are called Glochids.
You are referring to the Blue Agave, which is actually not a cactus at all. It is a member of the lily family.
The smallest particle of an element is called an atom.
The native habitat of the barrel cactus ranges from the southern United States of America to Mexico. It's called the barrel cactus because of its barrel shape. It also is called the fish hook cactus because of its spines. Its scientific name is Ferocactus spp.
The smallest blood vessels are called capillaries.
A Cactus.