Chapter 34 -3

Question 1

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

Answer 1

cephalopoda

Question 2

Squid are ?

Octopus is?

Answer 2

fast swimming open ocean predators

benthic feeder

Question 3

What is the structure of class cepalopod?

Answer 3

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

Question 4

Class cepalopod, What is ink for ?

chromatophores for?

Answer 4

escapes

camouflage

Question 5

What is the largest invertebrate animal on earth?

Answer 5

giant squid (from class cephalopoda, phylum mollusca)

Question 6

The segmented worms are in which phylum?

Answer 6

Annelida

Question 7

Characteristics of Annelida?

Answer 7

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

Question 8

What is inside of the Annelida?

Answer 8

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

Question 9

Phylum Annelida contains which classes?

Answer 9

Polychaeta
Oligochaeta
Hirudinea

Question 10

Marine worms are in which class?

Answer 10

polychaeta