Unit 3

Question 0

How many pairs of appendages per segment does a millipede have?

Answer 0

2

Question 1

What percent of all animals are Arthropoda?

Answer 1

80%

Question 2

Ommatidia

Answer 2

Composes compound eyes, detect light color and motion

Question 3

Class Merostomata

Answer 3

Horseshoe crabs, giant water scorpions

Question 4

Class Arachnida

Answer 4

Spiders, Scorpions, harvest man, ticks, mites

Question 5

Class Crustacea

Answer 5

Crabs, lobsters, fish lice, barnacles, shrimp, prawn, krill, crayfish

Question 6

Class Insecta

Answer 6

Dragonfly, grasshopper, fly, flea

Question 7

Class Ophiuroidea

Answer 7

Brittle stars, basket stars

Question 8

Class Echinoidea

Answer 8

Sea urchins

Question 9

Class Holothuroidea

Answer 9

Sea cucumbers

Question 10

Class Crinoidea

Answer 10

Sea lilies, feather stars

Question 11

What is a suspension feeder?

Answer 11

Sessile, long stalk attached to ocean floor, use arms for catching food particles. Examples: sea lilies and feather stars

Question 12

How does a starfish eat a bivalve?

Answer 12

Attach to bivalve, tube feet keeps it open, inject their stomachs into the bivalve and digests extracellularly

Question 13

What is autotomy?

Answer 13

Ability to detach part of their own body

Question 14

What is the defense mechanism of sea cucumbers?

Answer 14

Discharging long filaments that may have toxins, some expel their digestive, respiratory or reproductive organs

Question 15

Class Polyplacophora

Answer 15

Chiton, butterfly shells

Question 16

Class Gastropoda

Answer 16

Snails, slugs, limpets, conch

Question 17

What is torsion?

Answer 17

Movement of anus to anterior side during development

Question 18

Class Bivalvia

Answer 18

Oysters, clams, mussels, scallops

Question 19

Class Cephalopoda

Answer 19

Ammonite, squid, octopus

Question 20

What are pearls?

Answer 20

A clam tumor, layers of shell are secreted over some foreign substance