Zoology Exam 4 Study (3)

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1

Are the Phylum, Echinodermata, Hemichordata, and Chordata, Protostomes or Deuterostomes?

Deuterostomes.

2

Describe the Blastopore of a Deuterostome.

The Anus forms first.

3

Decribe the Endoskeleton of the Phylum Echinoderm.

It is Calcareous with plates or Ossicles.

4

Describe the Symmetry of the Phylum Echinodermata.

It is pentaradial

5

Describe the excretory organs of Echinoderms.

They have none.

6

How do Echinoderms Undergo Osmoregulation?

They don't.

7

What are the key features of the Phylum Echinoderm?

  • Calcareous Endoskeleton
  • Water-Vascular System
  • Pentaradial Symmetry
  • No Excretory Organs (No Osmoregulation)
8

What aids in removing Debris in Echinoderms?

Perdicellariae

9

In Echinoderms, the dermal Branchiae is used for what?

Respiration

10

Describe the Aboral Side of Echinoderms.

  • They have a Pedicallariae
  • Dermal Branchiae
  • Madreporite and Anus
  • Often Spiny
11

Describe the Oral side of Echinoderms.

  • They have a mouth
  • They have an Ambulacral groove (Open)
12

Describe the Internal Anatomy of Echinoderms.

  • Skeleton
  • Feeding and Digestion
  • Water Vascular System
  • Excretion and Respiration system
13

Describe the Excretory System of Echinoderms.

They have a simple excretory system with no kidneys and use diffusion to rid their bodies of nitrogenous waste

14

Describe the Respiratory System of Echinoderms.

Echinoderms have a a poorly developed respiratory system. They use simple gills and their tube feet to take in oxygen and pass out carbon dioxide.

15

What do Holothiroids use for excretion and respiration?

A Respiratory tree

16

a hydraulic system used by echinoderms, for locomotion, food and waste transportation, and respiration.

Water Vascular System

17

What kind of Coelom Formation Does an Echinoderm have?

Enterocoelous

18

Describe the Nervous System of the Phylum Echinodermata.

  • They have no head
  • They lack an advanced nervous system
19

Describe the organ systems of the phylum Echinodermata.

They lack many organ systems, including Osmoregulatory, Excretory, and Circulatory.

20

What are some examples of Animals in the class Crinoida of the Phylum Echinodermata.

  • Sea Lillies
  • Feather Stars
21

What are the characteristics of the Class Crinoida.

  • They have a Madreporite
  • They have Spines
  • They have no Pedicellariae
22

Echinoderms are known to have a notable ability to....

Regenerate

23

The tube feet of Ophiuroidea lacks what?

Suckers

24

What are the characteristics of the class Asteroida.

  • The body is composed of a central disc and five radiating arms or rays
  • They have a water vascular system
  • Spiny
25

What are examples of Animals in the class Ophiurida?

  • Brittle Stars
  • Basket Stars
26

The tube feet of Ophiuroidea is lacks what?

Suckers

27

What do Ophiuroids use for respiration and reproduction?

Bursae

28

The Bursae of the class ophiuroida is used for What?

Respiration and reproduction

29

What is located on the Oral Surface of Ophiuroids.

  • The Madreporite.
30

What are the characteristics of the Class Crinoida.

  • They have No Madreporite
  • They have No Spines
  • They have no Pedicellariae
31

What are some Chasteristics of the Class Ophiuridea?

  • No Pedicellariae or Papulae
  • Ambulacral grooves covered
  • Tube feet lack suckers
  • They have a Bursae for respiration and reproduction
  • Madreporite on Oral Surface.
32

What are examples of Echinoids?

  • Sea Urchin
  • Sand Dollar
  • Sea Biscuit
33

What are some characteristics of Echinoids?

  • They have a test with Spines
  • They have 5 pairs of ambulacral rows
  • They have Pedicellariae
34

Describe the internal anatomy of Echinoids

card image
35

What is located on the sole of Holothuroids?

Ambulacral areas

36

What do Holoruthoids use for excretion and respiration?

A Respiratory tree

37

What do Holoruthoids use for defense?

Cuvarian Tubules

38

What are some Characteristics of the class Holothuroida?

  • They are leathery with tiny ossicles.
  • They have Ambulacral areas on their sole or all over their body
  • They use a respiratory tree for excretion and respiration
  • They have a Unique defense system (Cuverian Tubules)
39

The mouth of Echinoids, equipped with five teeth operated by a complex system of plates and muscles

Aristotle's lantern

40

Which classes lack Pedicellariae?

Crinoidia and Ophiuroidea.

41

Which class lacks a Madreporite, Spines, and a Pedicellariae?

Crinoidia

42

Which Classes of the Phylum Echinodermata have Ambulacral grooves?

All of them.

  • Crinoidea
  • Ophiuroidea
  • Echinodea
  • Holothiroidea
  • Asteroidea

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