Chapter 34 -3 Flashcards

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1
Q

Which class of phylum mollusca the largest & most advanced invertebrate?

A

cephalopoda

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2
Q

Squid are ?

Octopus is?

A

fast swimming open ocean predators

benthic feeder

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3
Q

What is the structure of class cepalopod?

A

water jet propulsion to escape predation
ink gland & chromatophores
internal shell (pen) - dense protein
radula w/ biting beak

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4
Q

Class cepalopod, What is ink for ?

chromatophores for?

A

escapes

camouflage

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5
Q

What is the largest invertebrate animal on earth?

A

giant squid (from class cephalopoda, phylum mollusca)

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6
Q

The segmented worms are in which phylum?

A

Annelida

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7
Q

Characteristics of Annelida?

A

coelomate
hydrostatic
nephridia in each segment to filter wastes
2 muscle layers (long & circular)

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8
Q

What is inside of the Annelida?

A

setae, assists in locomotion
5 hearts (aortic arches) around esophagus
hemoglobin in blood

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9
Q

Phylum Annelida contains which classes?

A

Polychaeta
Oligochaeta
Hirudinea

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10
Q

Marine worms are in which class?

A

polychaeta

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