Question
What are these organisms? Sea anemone Sea star Sea sponge Sea urchin
Answer
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Hugh
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Answer
1. Sea anemone: A marine, predatory invertebrate under the order Adresacea.2. Sea star/starfish: A marine invertebrate falling under the group Asteroidea.3. Sea sponge: Multi-cellular, aquatic organisms primarily marine. 4. Sea urchin: A small, often spiny globular marine organism belonging to the same family as the starfish (Echinoidea).
Explanation
The organisms listed - Sea anemone, Sea star, Sea sponge, and Sea urchin - are all marine organisms that belong to different taxonomic groups.## Step 1: Sea anemoneSea anemones are marine, predatory invertebrates in the order Adresacea. They are named after the anemone flower due to their beautiful and colorful appearance. In biological terms, sea anemones are remarkably simple creatures, with a sack-like body and a single orifice that serves as both the mouth and anus.## Step 2: Sea star/starfishSea stars, also known as starfish, are a group of marine invertebrates related to sea urchins. They fall under the category of echinoderms, specifically in the group Asteroidea.## Step 3: Sea spongeThe term 'sponge' refers to more than 5,000 simple multicellular creeping or sessile aquatic animals, which can be either freshwater or marine. The taxonomic group of these organisms is Porifera, which consists mostly of sea sponges.## Step 4: Sea urchinSea urchins are small, spiny, and somewhat round-bodied. They belong to the same family as the starfish, which is Echinoidea. Sea urchins are usually globular, with spikes.