what is the arm like structures surrounding the mouth of cnidarians
An armlike bar of bone is called a brachial bone.
The stinging cells of cnidarians, called cnidocytes, are located on specialized structures called nematocysts. These nematocysts are found on the tentacles of cnidarians and are used for defense and capturing prey.
The bony structure that surrounds the brain is called the skull or cranium. It provides protection and support for the brain, as well as anchoring muscles and providing structure for the face.
The stinging cells of cnidarians, called cnidocytes, are usually located on specialized structures called tentacles. These tentacles are used by cnidarians for defense, capturing prey, and delivering venom.
It is called the cell wall
The mesoterium is the structure that surrounds the ovaries.
Mainly it is the cell wall. It surrounds the cell
Cnidarians have a simple body plan with a sac-like structure composed of three layers of cells: the epidermis, the gastrodermis, and the mesoglea. They possess specialized cells called cnidocytes that contain stinging structures called nematocysts, used for defense and capturing prey. Cnidarians also have a simple nerve net for coordinating movements and responses.
Cnidarians have no gut in their body .The structure which performs function similar to gut is called gastrovascular cavity .
The porous structure that surrounds the nucleus is called the nuclear envelope. It consists of two lipid bilayer membranes, with nuclear pores embedded within them that regulate the passage of substances in and out of the nucleus. This structure is crucial for maintaining the integrity of the genetic material and facilitating communication between the nucleus and the cytoplasm.
The skeletal structure that surrounds the chest cavity is called the ribcage. It is made up of the ribs, sternum, and thoracic vertebrae, providing protection for the organs within the chest cavity.
No, cnidarians do not have spicules. Spicules are small, needle-like structures made of calcium carbonate or silica that are found in some sponges and echinoderms for support and defense. Cnidarians, such as jellyfish and corals, have a different type of support structure called a mesoglea.