What are the characteristics of Porifera?

What are the characteristics of phylum Porifera?
  • These are pore-bearing multicellular animals.
  • The body has no organs.
  • They exhibit holozoic nutrition.
  • The body is radially symmetrical.
  • They can regenerate their lost parts.

What are the characteristics of sponges and cnidarians?

These organisms show a simple organization. Sponges have multiple cell types that are geared toward executing various metabolic functions. Cnidarians have outer and inner tissue layers sandwiching a noncellular mesoglea. Cnidarians possess a well-formed digestive system and carry out extracellular digestion.

What are the characteristics of Cnidaria?

All Cnidaria are aquatic, mostly marine, organisms. They all have tentacles with stinging cells called nematocysts that they use to capture food. Cnidarians only have two body layers, the ectoderm and endoderm, separated by a jelly-like layer called the mesoglea. Most Cnidarians have radial symmetry.

What are 4 examples of cnidarians?

There are four major groups of cnidarians:
  • Anthozoa, which includes true corals, anemones, and sea pens;
  • Cubozoa, the amazing box jellies with complex eyes and potent toxins;
  • Hydrozoa, the most diverse group with siphonophores, hydroids, fire corals, and many medusae; and.
  • Scyphozoa, the true jellyfish.

What are two characteristics common to all cnidarians?

Two characteristics that all cnidarians share are radial symmetry and tentacles with stinging cells. Hydra and other cnidarians are radially symmetrical—able to asexually divide into identical pie-shaped segments, like a flower pot. Cnidarians also feature tentacles with stinging cells.

What is Cnidaria with example?

Cnidaria/Lower classifications

What are three characteristics that all cnidarians have in common?

What are three characteristics that all cnidarian have in common? Cnidarians have an epidermis, gastrodermis, mesoglea, gastrovascular activity and tentacles. Also, they have cnidocytes and a nervous system composed of diffuse web of interconnected nerve cells called a nerve net.

What is the common name for Cnidaria?

jellyfish
Common names: jellyfish, sea anemones, corals, hydroids

Cnidarians are radially symmetrical, soft-bodied animals that only live in aquatic environments. They include the jellyfish, sea anemones, corals and hydroids.

What is the main characteristic that distinguishes Cnidaria phylum?

The tentacles are covered with cnidocytes (stinging cells). Cnidocytes are the most important characteristic that distinguishes organisms as belonging to the Cnidarian phylum.

What characteristics account for the great success of cnidarians?

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  • Two distinct adult forms.
  • Diphasic life cycle in some species.
  • Ability to proliferate by cloning.
  • And to form polymorphic colonies.
  • Formidable prey capture device.
  • Low Energy Demands.

Which of the following is a characteristic of cnidarians quizlet?

Which of the following is a characteristic of cnidarians? The gastrovascular cavity, characterized by a single opening, is the digestive compartment of cnidarians. They are dorsoventrally flattened.

Which of the following is a characteristic associated only with cnidarians?

Which of the following is a characteristic associated only with cnidarians? cnidocytes specialized for defense and capturing prey.

What are three characteristics that all cnidarians have in common?

What are three characteristics that all cnidarian have in common? Cnidarians have an epidermis, gastrodermis, mesoglea, gastrovascular activity and tentacles. Also, they have cnidocytes and a nervous system composed of diffuse web of interconnected nerve cells called a nerve net.

Is Cnidaria multicellular or unicellular?

The Cnidaria (or Coelenterata) are a primitive group of multicellular, often colonial animals with a primarily radial symmetry.