Platyhelminthes have the following important characteristics: They are triploblastic, acoelomate, and bilaterally symmetrical. They may be free-living or parasites. The body has a soft covering with or without cilia.
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Answer:
They also occur in leaves and fruits and constitute the hard shell of nuts and the outer hard coat of many seeds. Sometimes known as stone cells, sclereids are also responsible for the gritty texture of pears and guavas
Explanation:
Two causes of the ocean can be floods or tsunamis. Also technically hurricanes are a cause of the ocean as well as precipitation, such as thunderstorms or snow.
