Zoology Ch. 9 Echinoderms

This group of echinoderms differs from other groups by being attached to a substrate during a substantial part of their lives:

• Echinoids

• Holothuroids

• Crinoids

• Ophiuroids

This venomous animal stings using petal like pedicellariae:

• Crown-of-thorns sea star

• Long-spined sea urchin

• Sunflower sea star

• Flower urchin

The delicate hollow tubes that project from the coelomic cavity to the exterior, through which gas exchange and waste excretion take place are called:

• Papulae

• Ampullae

• Polian vesicles

• Pedicellariae

The side of an echinoderm opposite of the mouth is called the:

• oral surface

• aboral surface

• anterior surface

• posterior surface

Echinoderms are considered:

• Acoelomate deuterostomes

• Acoelomate protostomes

• Coelomate deuterostomes

• Coelomate protostomes

Tags

NGSS.MS-LS4-2

How many extinct classes of echinoderms are there?

• 5

• 10

• 15

• 20

Tags

NGSS.MS-LS4-1

What is the name of the long digestive glands in each arm of a sea star?

• intestines

• pyloric caeca

• salivary glands

• tiedemann’s bodies

When a sea cucumber expels its internal organs to confuse predators it is called:

• dessication

• dissipation

• evisceration

• expiation

What is the nickname for areas that have been overgrazed by sea urchins and made devoid of kelp?

• kelp forests

• kelp deserts

• urchin barrens

• urchin desserts

Tags

NGSS.MS-LS2-4

The fused, rigid endoskeleton of echinoids is called a(n):

• test

• quiz

• ossicle

• lantern