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Video // Beg I Pre-int // The Feather Star
J** 2023-01-11 오후 3:31:37 175



The Feather Star



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Vocabulary:
1.cri•noid ˈkrī-ˌnȯid. : = any of a large class of invertebrates that are echinoderms and usually have a cup-shaped body with five or more feathery arms.
2.Stalk = the slender attachment or support of a leaf, flower, or fruit.
3.Resemble = have qualities or features, especially those of appearance, in common with (someone or something); look or seem like.
4.Symmetrical = made up of exactly similar parts facing each other or around an axis; showing symmetry.
5.Cirri [ cirrus] = a slender tendril or hairlike filament, such as the appendage of a barnacle, the barbel of a fish, or the intromittent organ of an earthworm. Questions:
1.What are feather stars? And how many species this class consists of?
2.What is included in the class of feather stars? How do lilies spend their whole life?
3.What resembles sea lilies when they are young?
4.What feather star body consists of?
5.Why feather stars raise their arms?
6.How can they anchor themselves on rocks and other substrates? What do you call their tiny feet?
7.Where are they commonly found?
8.What can feather stars do with their limbs? And what do their limbs act as for many symbiotic organisms like shrimp?
9.Have you ever had knowledge about feather stars? Share it.

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