S. How are the Ctenophora different from the Cnidaria? A. Cnidaria have collobla
ID: 269513 • Letter: S
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S. How are the Ctenophora different from the Cnidaria? A. Cnidaria have colloblasts and Ctenophora do not. B. Cnidaria have stinging cells and Ctenophora do not. C. Cnidaria have tentacles and Ctenophora do not. D. Cnidaria have well developed balance organs and Ctenophora do not E Cnidaria are triploblastic organisms and Ctenophora are not. 6. What does the Cambrian explosion refer to? A The firing of cnidocytes The seemingly increase of phyla during the Cambrian period. C.The seemi D. A lanee mingly decrease of phyla during the Cambrian period after a meteorite impact A large number of fossils described by Prof. Cambrian. A Hhilves and poriferans have in common? 7. What do Bogerate water current to filter feed. B) Both are placed in the phylum Mollusca 100th are exclusively sessile animals and can't move as adult. D) Both are diploblasts & Which of the following is true? B. Almost all animal phyla include species that occur in the marine environment. animal phyla include species that occur in the freshwater environment. animal phyla include species that occur in terrestrial environments. C. Almost all D. None of the above is true.Explanation / Answer
Q5:- Option B
Explanation:- Cnidaria have stinging cells wheras ctenophora do not have instead they special type of cells colloblasts.
Q6:- Option B
Explanation:- Cambrian explosion refers to increasing phyla diversity during cambrian period in very short period of time. The present animal diversity is actually evolved during cambrian period paleozoic era.
Q7:-Option A
Explanation:- Both groups are filter feeders. They feed through water currents that carry food particles or small organisms.
Q8:- Option D
Explanation:- None of the above is true because some phyla are exclusively marine ( echinodermata) some are exclusively terrestrial, some are exclusively fresh water.
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