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mrs_skeptik [129]
2 years ago
6

What type of body form of Cnidarians are tubular shaped and attach themselves to a firm surface?

Biology
1 answer:
Kaylis [27]2 years ago
8 0

The correct answer is Option A: polyp

Polyps are tubular body shapes of cnidarians that are attached to a firm surface.

<h3>What are cnidarians?</h3>
  • Cnidaria or Coelenterata is a phylum of aquatic animals most of which are marine. Any organism under this phylum is called a cnidarian.
  • These have special cells called cnidocytes (stinging cells) which help to capture prey.
  • Examples of this group are the corals, jellyfish, hydra, sea anemone.
  • Cnidarians have two types of body forms the polyp and the medusa which change during the life cycle of the animal. Some have only one type of body form throughout their life.
  • The polyp is tubular and sessile, usually attached to a firm surface.
  • Medusa (Jellyfish) is bell shaped and motile having tentacles hanging out at the margins.
  • Spicules are sharp needle like shapes embedded in the sponges which help in defense.
  • Nematocysts are large organelles produced as a secretory vessel from Golgi within cells called nematocyte in cnidarians.

Learn more about polyp and medusa here:

brainly.com/question/3507950

#SPJ1

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