What does Cnidaria Scyphozoa mean?

1. What defines scyphozoa?
2. What is the difference between Hydrozoa and scyphozoa?
3. Why are scyphozoa called jellyfish?
4. How do you identify scyphozoa?
5. Are scyphozoa solitary or colonial?
6. Are scyphozoa polyps?
7. How do members of the class scyphozoa differ from other cnidarians?
8. Whats the real name for jellyfish?
9. What is a jellyfish classified as?
10. What animals belong to Scyphozoa?
11. Are scyphozoa harmful to humans?
12. Which body form is more dominant in Class scyphozoa?
13. Which of the following are characteristics of members of Class scyphozoa?

What defines scyphozoa?

Definition of scyphozoan

: any of a class (Scyphozoa) of cnidarians (such as the sea nettle) that possess a large, conspicuous, sexually-reproducing medusa typically lacking a velum and a very small, usually funnel-shaped, asexually-reproducing polyp.

What is the difference between Hydrozoa and scyphozoa?

Differences between a Scyphozoan & Hydrozoan medusae? Schyphozoans - More 'jelly & 4 oral arms. Hydrozoans - No oral arms. Have a velum ring & less jelly (fold up when preserved).

Why are scyphozoa called jellyfish?

The Scyphozoa are an exclusively marine class of the phylum Cnidaria, referred to as the true jellyfish (or "true jellies"). ... The class name Scyphozoa comes from the Greek word skyphos (σκύφος), denoting a kind of drinking cup and alluding to the cup shape of the organism.

How do you identify scyphozoa?

Scyphozoans share a number of attributes with other cnidarians: (1) they typically possess tentacles, (2) their symmetry is radial, (3) the body wall consists of an outer epidermis and inner gastrodermis, separated by a layer of jelly-like mesoglea, (4) the mouth is the only opening to the digestive system, (5) ...

Are scyphozoa solitary or colonial?

Scyphozoans live most of their life cycle as free-swimming, solitary carnivores. The mouth leads to the gastrovascular cavity, which may be sectioned into four interconnected sacs, called diverticuli.

Are scyphozoa polyps?

The life cycle of free-swimming scyphozoan jellyfish typically consists of three stages. A sessile polyp (scyphistoma) stage asexually buds off young medusae from its upper end, with each such ephyra growing into an adult. The adults are either male or female, but in some species they change their sex as they age.

How do members of the class scyphozoa differ from other cnidarians?

Scyphozoan medusae differ from those of hydrozoans in lacking a velum. ... Scyphozoans, like all Cnidarians, are all carnivores and some are filter-feeders. Many smaller jellies feed on food particles trapped from the water while larger ones prey on fishes or swimming invertebrates.

Whats the real name for jellyfish?

Scyphozoans (the "true jellyfish") are exclusively marine, but some hydrozoans with a similar appearance live in freshwater. Large, often colorful, jellyfish are common in coastal zones worldwide.

What is a jellyfish classified as?

jellyfish, any planktonic marine member of the class Scyphozoa (phylum Cnidaria), a group of invertebrate animals composed of about 200 described species, or of the class Cubozoa (approximately 20 species).

What animals belong to Scyphozoa?

The class Scyphozoa can be found in the phylum of Cnidaria, the phylum of the “stinging” creatures, such as jellyfish. There are approximately 200 species that belong to the class Scyphozoa, and they are the most familiar of the gelatinous creatures of our world. These include, sea nettles, moon jellies and jellyfish.

Are scyphozoa harmful to humans?

Although the Scyphozoa are generally considered less dangerous, they are responsible for the majority of jellyfish envenomations throughout the world and life-threatening complications following this occurrence are possible [26].

Which body form is more dominant in Class scyphozoa?

Mandira P. Scyphozoa is a class of marine organisms under phylum Cnidaria. They have blind sac body plan, while umbrella like free swimming medusa form is dominant phase of life.

Which of the following are characteristics of members of Class scyphozoa?

Which of the following are characteristics of class Scyphozoa? They move by jetting water from the gastrovascular cavity or space beneath it, using the rhythmic contraction of muscles and the medusa is the major body form, with the polyp being greatly reduced or even absent in some species.