What is the main characteristic of hollow bodied animals?

hollow-bodied animals. systems. Their bodies only have one opening and no organs. animals and get their food from the digested food of the host.

1. What is hollowed bodied animals?
2. What is hollow-bodied animals and have stinging cells or tentacles?
3. Which invertebrates have hollow tubes with many pores?
4. What are spiny skinned animals?
5. Is jellyfish an animal?
6. Which of these groups of animals belong to echinoderms?
7. What are mammals characteristics?
8. What characteristic is common to only amphibians and land vertebrates?
9. What are the main characteristics of vertebrates?
10. Why do sponges belong to Parazoans?
11. Which is the most primitive animal?

What is hollowed bodied animals?

Answer: Explanation: Classes of hollow-bodied animals includes jellyfish, hydra, sea anemones and coral .

What is hollow-bodied animals and have stinging cells or tentacles?

Nearly all (about 99 percent) cnidarians are marine species. Cnidarians contain specialized cells known as cnidocytes (“stinging cells”), which contain organelles called nematocysts (stingers). These cells are present around the mouth and tentacles, serving to immobilize prey with toxins contained within the cells.

Which invertebrates have hollow tubes with many pores?

In addition to the osculum, sponges have multiple pores called ostia on their bodies that allow water to enter the sponge. In some sponges, ostia are formed by porocytes: single, tube-shaped cells that act as valves to regulate the flow of water into the spongocoel.

What are spiny skinned animals?

Who are these “spiny skinned animals”? They are the sea stars (starfish), sea urchins, sand dollars, sea cucumbers, and sea lilies. They all live in marine waters. And scientists have classified them all in the phylum Echinodermata. “Echino” means “spiny animal”, and “derm” means “skin”.

Is jellyfish an animal?

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).

Which of these groups of animals belong to echinoderms?

Echinoderms. Echinoderms are a phylum of marine invertebrates that include starfish, brittle stars, sea cucumbers, sea urchins, sand dollars, and crinoids. They are one of the most diverse groups of marine invertebrates and play important ecological roles from the near-shore environment to the deep seas. Dupont et al.

What are mammals characteristics?

What five characteristics do mammals have in common? Mammals have hair or fur; are warm-blooded; most are born alive; the young are fed milk produced by the mother's mammary glands; and they have a more complex brain than other animals.

What characteristic is common to only amphibians and land vertebrates?

All have lungs and scaly skin. They shed their skin all at once. They have well developed organs. They all reproduce with internal fertilization.

What are the main characteristics of vertebrates?

As chordates, vertebrates have the same common features: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail. Vertebrates are further differentiated from chordates by their vertebral column, which forms when their notochord develops into the column of bony vertebrae separated by discs.

Why do sponges belong to Parazoans?

Sponge Parazoa

Sponge parazoans are unique invertebrate animals characterized by porous bodies. This interesting feature allows a sponge to filter food and nutrients from water as it passes through its pores.

Which is the most primitive animal?

Flatworms are the most primitive organisms in which we find all three germ layers: ectoderm, mesoderm, and endoderm. Such animals are called triploblastic.