Animal Biology Practical 2- Echinodermata & Chordata

Asteroidea

________ arms are not sharply distinct from central disc

Ophiuroidea

_________ arms sharply distinct from central disc

Echinoidea

___________ body without arms

Holothuroidea

____________ body elongated in mouth to anus axis

Echinoidea

______________ body is globular with movable spines

Asteroidea

_______________ oral surface oriented toward ground

Holothuroidea

_____________ madreporite is internal

Echinoidea

___________ madreporite is aboral

Ophiuroidea

_____________ madreporite is oral

Crinoidea

_____________ madreporite is absent

Crinoidea

______________ mouth surrounded by branched tentacles

Echinoidea

___________ ossicles fused to form a hard test

Crinoidea

_______________ stalk present in most species

no cephalization, pentaradial symmetry, calcareous endoskeleton, water vascular system, most dioecious

Key characteristics for Phylum Echinodermata

complete

Phylum Echinodermata digestive system

none, metabolic waste diffused through tube feet

Phylum Echinodermata excretory system

most have separate sexes, external fertilization

Phylum Echinodermata reproductive system

Asteroidea

which class has tube feet with suckers

Asteroidea

which class is a carnivorous predator?

locomotion, prey capture, and respiration

Class Asteroidea tube feet (podia) function

filter & bring water into the water vascular system; regulate water pressure within water vascular system

Class Asteroidea Madreporite function

protection

Class Asteroidea Spines function

digestion; consumption of prey

Class Asteroidea cardiac stomach function

each controls one tube foot by pushing water into or pulling water out of it

Class Asteroidea ampullae function

reproduction

Class Asteroidea gonad function

extracellular digestion

Class Asteroidea tube pyloric ceca (digestive glands) function

Ophiuroidea

Which class has 5 arms used for locomotion?

Ophiuroidea

Which class has tube feet suckers NOT used for locomotion?

Echinoidea

__________ move via coordinated effort of their tube feet, powered by their water vascular system

locomotion

Class Echinoidea tube feet (podia) function

chewing food

Class Echinoidea aristotle's lantern function

protection; can assist with locomotion

Class Echinoidea spines function

Crinoidea

Which class has five flexible branched arms?

1. notochord

2. dorsal nerve chord

3. pharyngeal slits or pouches

4. endostyle or thyroid glabd

5. post-anal tail

5 structures only found in Phylum Chordata

gills, lungs, and/or skin

phylum Chordata respiratory system

closed

phylum Chordata circulatory system

complete

phylum Chordata digestive tract

metabolic waste removed via kidneys

phylum Chordata excretory system

sexes are usually seperate, most produce sexually

phylum Chordata reproductive system

sessile filter-feeders

most urochordates are ____________________.

Madreporite

1

Test

2

Tube feet

6

Spines

3

Bottom

Where is the oral surface?

Top

Where is the aboral surface

Echinoidea

Class

Asteroidea

Class

Central disc

1

Aristotles lantern

5

Madreporite

2

Mouth

1

ambulacral groove

2

Tubefeet

3

Spines

4

Respiratory tree

1

Anus

2

Tube feet

3

Mouth

4

Arms

3

Crinoidea

Class

Ophuroidea

Class

Holothuroidea

Class

Asteroidea

Class

Echinoidea

Class

Endocyte

2

Dorsal nerve chord

1

Tentacles

4

Pharyngeal slits

3

Mouth

5

Cephalochordata

Subphylum

Dorsal nerve chord

1

Notochord

2

pharyngeal slits

3

Notochord

4

Tail

5

Cephalochordata

Subphylum

Tail

1

Notochord

2

Urochordata

Subphylum

Pharyngeal slits

4

Dorsal nerve chord

3