Cnidarians

Frilled anemones are typically consumed by sea stars, nudibranchs, and some species of fish that can tolerate their stinging tentacles. Additionally, some crabs and shrimp may also feed on frilled anemones.

Hydras typically exhibit faster responsiveness compared to sponges due to their ability to move and capture prey with their tentacles. Sponges, on the other hand, have a more limited response as they rely on water flow to filter feed and lack the ability to actively move to capture prey.

If a cnidarian lost its stinging cells, it would lose its primary defense mechanism against predators and its ability to capture prey. This would make the cnidarian more vulnerable to predation and reduce its efficiency in obtaining food.

Cnidarians belong to the Kingdom Animalia. They are characterized by their radial symmetry, tentacles with stinging cells called cnidocytes, and a simple nerve net.

They are called nematocytes. They are one of at least three types of cnidocytes, the very definition of the phylum. Nematocytes sting, the other two types of cnidocytes either adhere, or gum up their prey, substrate, or that guy that wears a helmet and does super glue commercials.

Examples of cnidarians include jellyfish, corals, sea anemones, and hydroids. Cnidarians are characterized by their radial symmetry and specialized stinging cells called cnidocytes that they use to capture prey.

Hydras are small aquatic organisms that are typically consumed by larger predators, such as fish, turtles, and birds. Additionally, some invertebrates like crustaceans and other aquatic insects may also feed on hydras.

They have a mouth/anus and that is it.

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They are a special type of ectotherm called a poikilotherm meaning they have the same body temperature as their ambient surroundings.

A hydranth (feeding polyp) will have a hypostome, mouth and tentacles. A gonangium (reproductive polyp) will have medusa buds and gonotheca. The medusa buds will become free swimming Medusa to sexually reproduce by the female releasing an egg and the male releasing haploid sperm. After fertilization, the zygote develops into a ciliated, swimming planula larva which will settle to the ocean floor attaching itself to the substrate. A new generation of polyps then begins to form through asexual budding.

In the lava

No, a hydra doesn't have blood. It is a single-cellular animal.

It has a single layer of cell.

Lay a paper on a flat surface. With your hands on the surface, push two sides together until you make something that looks like a polyp. Voila! Something similar to a crosssection of a sponge. Think of the paper as cells in a single line.

The old name is coelenterate.

Phylum Cnidaria

by puting it back out their mouths

Cnidaria.

true

Cnidarians and sponges receive most of their food from filtering water; they would starve without water. Also, they would most likely crush themselves because of their body weight if they were on land.

cnidarians are multicellular

the new bud simply detaches from the parent body

i think a hydra has a incomplete digestive system called the-gastrovascular system