Which type of cnidarians only have the polyp form?

Members of one class of cnidarians, the Anthozoa, exhibit only the polyp body form; most species of the other three classes (hydrozoans, scyphozoans, and cubozoans) alternate in their life cycles between polypoid and medusoid (free-swimming) body forms.

Why are phylum ctenophora classified separately from phylum cnidaria?

Modern authorities, however, have separated the cnidarians and ctenophores on the basis of the following ctenophore characteristics: (1) the lack of the stinging cells (nematocysts) that are characteristic of cnidarians; (2) the existence of a definite mesoderm in the ctenophores; (3) fundamental differences in …

Why does aurelia belong to the phylum cnidaria?

Aurelia belongs to the class Scyphozoa under the phylum Cnidaria. The outer layer is called the ectoderm. Jellyfish are really interesting invertebrates because they have cnidocytes – the cells that cause the sting when their tentacles get you.

Which animal eats sea anemones?

Nematocysts, microscopic stinging structures in the tentacles, are used to capture and paralyze prey such as fishes and other marine animals. Some species eat only microorganisms. Anemones are eaten by sea slugs, certain starfishes, eels, flounders, and codfish.

Are clown fishes cannibals?

Clownfish
Subfamily: Amphiprioninae

Are damselfish omnivores?

Damselfishes are lively and quick, and are usually strongly territorial and aggressive. Some feed mainly on plant matter or small animals suspended in the water; others are omnivorous.

Do koran angelfish eat anemones?

Angelfish of the genus Centropyge, Apolemichthys and Pomacanthus all consume these anemones. These fish are all somewhat fond of feeding on corals so care should be taken one for the purpose of consuming anemones.

Do angelfish eat anemone?

They are great in pairs. I have a Gigantea, two small BTA (clones) and a H. malu. The angels do not bother any of the anemones.

Do sea anemones have stomachs?

Digestive Physiology The food moves into a stomach, through the intestine and into the anus, which is on the top surface of the animal.

Does penguins eat plankton?

Do penguins eat plankton? Penguins are carnivores but are considered to be heterotrophic carnivores. Plankton is marine life that can only move with the current, this could include krill. All penguins will supplement their diet with a variety of plankton, small marine invertebrates, and even cephalopods.

Is a sea slug an animal?

Sea Slugs are tiny animals known for their bright colors and intricate patterns. One of the most important facts to remember about sea slugs is there are over 2,000 species. TThey are found in both shallow and deep areas of oceans. In Asia, sea slugs are a form of cuisine.

What animals eats zooplankton?

Small Predators Mollusks, small crustaceans (such as shrimp and krill) and small fish like sardines and herring eat large amounts of the zooplankton.

What are plant eating animals?

Animals that eat only plants are called herbivores. Deer, grasshoppers, and rabbits are all herbivores.

What are the predators of the blue glaucus?

Few studies regarding this aspect of Blue Glaucus life have been conducted, though loggerhead sea turtles may be one natural predator. A study on this species found that 42% of their stomachs contained remnants of blue dragons.

What can sea anemones do?

What are sea anemones? Sea anemones may look a little bit like a flower but they are actually animals! Anemones are able to capture food like zooplankton from the seawater around them. They use their long stinging tentacles to stick to tiny bits of food and move it towards their mouth inside the ring of tentacles.

What do green chromis eat?

Blue Green Chromis fish are omnivores, which means they eat both meaty and vegetariasn foods. However, the diet should primarily contain meaty foods like mysis shrimp, krill and brine shrimp.

What kind of animal is blue glaucus?

Also known as the blue dragon, sea swallow or blue angel, the blue glaucus is a species of brightly colored sea slug (nudibranch), and can be found throughout the Atlantic, Pacific and Indian Oceans in temperate and tropical waters.

Which animal is slug?

slug, any mollusk of the class Gastropoda in which the shell is reduced to an internal plate or a series of granules or is completely absent. The term generally refers to a land snail.

Which is the large plant eating sea animal?

MANATEES are large, friendly looking herbivorous mammals that eat plants. They can spend up to eight hours a day eating water plants and are sometimes called “sea cows”.

When do sea anemones move?

We can find sea anemone swimming at low speed, one of the slowest moving animals. The sea anemone moving speed is 0.0001 kph. They rarely remove themselves from coral or rocks, preferring to hunt by waiting for fish to come near enough to catch, but they can walk around on one foot, known as a pedal disc. The specialty of these creatures is they can change their shape instantly. They can contract, bend and twist their body shape dramatically.

Are sea anemones hard to take care of?

One type of reef inhabitant that hobbyists often have difficulty with is the anemone. Anemones require certain tank conditions including lighting, water flow and oxygen levels in order to thrive so if you are not able to provide these conditions, you may not be able to keep anemones in your tank.