Coral reef are the characteristic feature of phylum:
Correct answer: B. Coelenterata/Cnidaria
- A. Porifera
- B. Coelenterata/Cnidaria
- C. Arthropoda
- D. Platyhelminthes
Explanation
Coral reefs are the characteristic feature of the phylum Cnidaria. Cnidaria is a phylum of aquatic invertebrates that includes corals, sea anemones, jellyfish, and hydras. Cnidarians are characterized by their radial symmetry, the presence of nematocysts (stinging cells), and a gastrovascular cavity (a single opening that serves as both a mouth and an anus). Coral reefs are built by colonial cnidarians called scleractinian corals. Scleractinian corals secrete a hard calcium carbonate skeleton that supports the reef structure. Coral reefs are found in warm, shallow waters around the world and are home to a wide variety of marine life.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Kingdom Plantae
Plants are multicellular, photosynthetic eukaryotes with cellulose cell walls, chloroplasts and large vacuoles. Coverage includes alternation of generations, vascular and non-vascular plants, seedless and seed-producing groups, gymnosperms and angiosperms, and the distinction between monocot and dicot features.
Practise Biodiversity and Variety of Life
3,130 free Biodiversity and Variety of Life MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.