What is the method of feeding of coelenterata?

1. How do coelenterates feed?
2. What type of digestion is coelenterates?
3. How do coelenterates reproduce?
4. What are the main features of Coelenterata?
5. Which type of fertilization is occur in Coelenterates?
6. What are Coelenterates give one example class 11?
7. What is meant by Coelenterata?
8. What are tentacles in coelenterates?
9. What are the two basic forms present in Coelenterata?
10. Is coelenterata a Coelomate?
11. Which type of reproduction is common in sponges and Coelenterates?
12. What is polyp and medusa?
13. What is Coelenterata called Cnidaria?
14. How do Coelenterates and platyhelminthes differ from each other?

How do coelenterates feed?

How do Coelenterates feed? Coelenterates use tentacles to capture the food and draw it into the opening. Their poison is so deadly that it can paralyze very large creatures.

What type of digestion is coelenterates?

Coelenterates possess a simple gastric cavity, where they digest their food.

How do coelenterates reproduce?

In Coelenterates reproduction occurs both by asexual as well as sexual methods. Asexual reproduction: They reproduce asexually by the formation of buds on its surface. Afterward, it separates from the parent and grows into a new individual.

What are the main features of Coelenterata?

Characteristics. All coelenterates are aquatic, mostly marine. The bodyform is radially symmetrical, diploblastic and does not have a coelom. The body has a single opening, the hypostome, surrounded by sensory tentacles equipped with either nematocysts or colloblasts to capture mostly planktonic prey.

Which type of fertilization is occur in Coelenterates?

External fertilization mostly. Two sexual stages are found that is polyp and medusa. They show alteration of generations i. e. polyp produce medusa asexually and medusa produce polyp sexually. In hydra and adamsia polyp stage is present while in aurelia medusa stage is present.

What are Coelenterates give one example class 11?

The Phylum Coelenterata consists of marine organisms that have a body that is radially symmetrical and a mouth that has sensory tentacles that help in capturing prey easily. Other animals belonging to the Phylum Coelenterata are hydra, comb jellies, true jellies, sea pens, coral animals, sea anemones and more.

What is meant by Coelenterata?

coelenterate. / (sɪˈlɛntəˌreɪt, -rɪt) / noun. any invertebrate of the phylum Cnidaria (formerly Coelenterata), having a saclike body with a single opening (mouth), which occurs in polyp and medusa forms. Coelenterates include the hydra, jellyfishes, sea anemones, and corals.

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 are the two basic forms present in Coelenterata?

The coelenterates characteristically have two basically similar types of individuals differing in structural details, called the polyp and the medusa. The polyp is sessile.

Is coelenterata a Coelomate?

It is believed that coelenterata have coelom, but they have only two layers of cells: one makes up cells on outside the body, and other makes the inner lining of body. Which could not form any genuine internal coelom, therefore it is not considered as coelomate. It is acoelomate.

Which type of reproduction is common in sponges and Coelenterates?

Sponges are at a cellular level of organization and thus do not have organs or even well-developed tissues; nevertheless, they produce sperm and eggs and also reproduce asexually.

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.

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.