Distinguish between phyla Cnidaria and Ctenophora.
Understand the Problem
The question is asking to distinguish between the phyla Cnidaria and Ctenophora in biology. This involves comparing and contrasting the two groups of aquatic animals based on their characteristics, structures, and classifications.
Answer
Cnidaria have cnidocytes, an alternation of generations, and gastrovascular cavity; Ctenophora use colloblasts and cilia for movement.
The final answer is that Cnidaria have cnidocytes for stinging, an alternation of generations, and a gastrovascular cavity. Ctenophora lack cnidocytes, use colloblasts for prey capture, and have rows of cilia for movement.
Answer for screen readers
The final answer is that Cnidaria have cnidocytes for stinging, an alternation of generations, and a gastrovascular cavity. Ctenophora lack cnidocytes, use colloblasts for prey capture, and have rows of cilia for movement.
More Information
Cnidarians include jellyfish and corals, using cnidocytes to capture prey. Ctenophores, like comb jellies, move with cilia and capture prey with sticky cells called colloblasts. While both are similar looking and aquatic, their mechanisms of survival are distinctly different.
Tips
Confusing cnidocytes (stinging cells in cnidarians) with colloblasts (sticky cells in ctenophores) is common; remember, only cnidarians can sting.
Sources
- Difference between Cnidaria and Ctenophora - Testbook.com - testbook.com
- Cnidarian/Ctenophora - Marine Science - mrsdmarine.weebly.com
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