Enteron in coelenterates acts as___________?
Correct answer: D. all of these
- A. Digestive cavity
- B. Body cavity
- C. Transporting cavity
- D. all of these
Explanation
The enteron of coelenterates is the gastrovascular cavity, where digestion occurs and through which digested nutrients and materials are distributed because a separate circulatory system is absent. Students may choose only digestive cavity, but it also functions as the body cavity and as a transport space.
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Animal and plant cells share a plasma membrane, cytoplasm, nucleus, ribosomes, mitochondria and endoplasmic reticulum, but plant cells also have a cellulose cell wall, chloroplasts and a large permanent vacuole. Questions cover organelle structure and function, differences between the two cell types, and how membranes control movement of substances.
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