Lesson 5 - Echinoderms And fish Flashcards by Rafferty James

Q

What does ‘Echino’ ‘Dermata’ mean?

A

Spiny Skin

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Q

T/F - All echinoderms are marine

A

True

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Q

What is the water vascular system?

A

1000’s of tube feet

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Q

Asteroidea Class?

A

Sea Stars

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Q

Echinoidea Class?

A

Sea Urchins

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Q

Holothuroidea Class?

A

Sea Cucumbers

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Q

Ophiuroidea Class?

A

Brittle Stars

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Q

Crinoidea Class?

A

Sea Lillies

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Q

What is a sea stars tube feet called?

A

Podia

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Q

How do Asteroidea eat?

A

Invert stomach onto prey

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Q

Describe a Echnoidea body? (2)

A

Enclosed in endoskeletal test. Spines for defence

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Q

How do Holothuroidea defend themselves?

A

Expel quickly regenerating internal organs

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Q

Ophiuroidea characteristics? (2)

A

Most diverse, locomotion by arms/no suckers,

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Q

Crinoidea behaviour?

A

Filter feeders use tube feet to sweep food particles to mouth, many are sessile

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Q

Agnatha definition and examples? (3)

A

Without jaws, hagfish and lamprey.

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Q

Agnatha do what in defence?

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A

Jet slime

Q

Chondrichthyes class? (3)

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A

Sharks, rays, chimaeras

Q

What does Chondrichthyes mean?

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A

Cartiligious fish

Q

Selachii Order?

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A

Sharks

Q

Selachii characteristics? (3)

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A

No swim bladder, Ampullae of Lorenzini, Live young

Q

Example of Lobe finned fish

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A

Lungfish, use fins to walk