Types of coelenterata?

1. What are Coelenterates 3 examples?
2. What are the two examples of Coelenterata?
3. What are tentacles in coelenterates?
4. What is polyp and medusa?
5. What is Coelenterata called Cnidaria?
6. Why is hydra an Coelenterata?
7. Are Coelenterates hermaphrodite?
8. What are the function of tentacles?
9. Is Coelenterata and Cnidaria same?
10. Are sexes separate in Coelenterata?
11. How do Coelenterates and platyhelminthes differ from each other?
12. Which animal is called as jelly fish?

What are Coelenterates 3 examples?

Coelenterates include three major groups: the hydrozoans, the scyphozoans, and the anthozoans. The hydrozoans have only a few calcareous members that have zooxanthellae, the fire coral, for example, and the scyphozoans are primarily jellyfish.

What are the two examples of Coelenterata?

Coelenterata is a term encompassing the animal phyla Cnidaria (coral animals, true jellies, sea anemones, sea pens, and their allies) and Ctenophora (comb jellies).

What are tentacles in coelenterates?

Tentacles have special structures known as the nematocysts which help in capturing and paralyzing prey. Coelenterates simply wave their tentacles and when a prey comes in contact, the nematocysts inject the toxin that paralyses or kills the prey. Nematocysts are the most distinguishing feature of this phylum.

What is polyp and medusa?

There are two basic cnidarian body shapes: a polyp form, which is attached to a surface; and an upside-down free-floating form called a medusa. Some cnidarians change form at different phases of their life cycle, while others remain in one form for their entire life.

What is Coelenterata called Cnidaria?

Phylum Coelenterata is also known as Cnidaria due to the presence of cnidoblasts or cnidocytes on the tentacles and body surface. They contain stinging capsules called nematocysts.

Why is hydra an Coelenterata?

Hydras belong to the phylum Coelenterata (also called Cnidaria), which includes corals, sea anemones, and jellyfish. ... Hydras are also atypical because they do not have a medusa (jellyfish) stage as part of their life cycle as do most other coelenterates.

Are Coelenterates hermaphrodite?

Looking into their sexuality most of the organisms belonging to this phyla appear to be gonochorists/ unisexual with exceptions of few hermaphrodites. They are capable of undergoing both sexual and asexual reproduction along with other means like budding and regeneration.

What are the function of tentacles?

Tentacles are slender, flexible organs on the head. They may function in sensory perception and in actually securing food.

Is Coelenterata and Cnidaria same?

cnidarian, also called coelenterate, any member of the phylum Cnidaria (Coelenterata), a group made up of more than 9,000 living species. Mostly marine animals, the cnidarians include the corals, hydras, jellyfish, Portuguese men-of-war, sea anemones, sea pens, sea whips, and sea fans.

Are sexes separate in Coelenterata?

While considering phylum coelenterata..are the sexes separate or not? ... Cnidarians or coelentrates are hermaphrophites. Some of the species are capable of self-fertilization. Otherwise, the gametes are generally shed into the sea(external fertilization), where the eggs are fertilized.

How do Coelenterates and platyhelminthes differ from each other?

Coelenterates vs Platyhelminthes

Phylum Platyhelminthes are mostly parasitic, and they are triploblastic animals where the ectoderm is very specialized with a prominent epidermis. Coelenterates show tissue level organization. Platyhelminthes show organ level organization.

Which animal is called as jelly fish?

Jellyfish and sea jellies are the informal common names given to the medusa-phase of certain gelatinous members of the subphylum Medusozoa, a major part of the phylum Cnidaria. ... Large, often colorful, jellyfish are common in coastal zones worldwide.