Explanation:
Echinoderms belong to a very diverse phylum of marine-dwelling invertebrates, which have integral roles in salt water aquatic ecosystems. They comprise brittle stars, starfish, sea-urchins, sand dollars, and sea cucumbers. They have distinct characteristics, they:
- are only marine animals.
- show bilateral symmetry as larvae, and radial symmetry as adults
- show three layers (germ)
- show complex-level organisation, i.e. organs are seen
- have a fluid-filled body cavity
Learn more about other phyla at brainly.com/question/9504034
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Answer:
plant cell
Explanation:
Plant cells have a cell wall to maintain cell shape. They also have a large central vacuole for water storage and a nucleus at the periphery.
Hope that helps.
Answer:objects move in a circular path
Explanation:
when we tie thread at the top of scale and then move it in circle ,in this case the scale is not going out of the circle ,this means that the scale provide centripetal force.
Saturated Fat is one example
