Zoology Classification, Sponges, and Cnidarians

Question 1

Classification in Order

Answer 1

“Dear King Phillip Came Over for Good Soup”

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

Question 2

Three Main characteristics of all animals

Answer 2

Multicellular/eukaryotic, able to reproduce, and heterotrophic

Question 3

Symmetry

Answer 3

similarity among body structures

Question 4

Asymmetry

Answer 4

No symmetry

Question 5

Radial Symmetry

Answer 5

Divided on the central axis

Question 6

Bilateral symmetry

Answer 6

Divided into a mirror image

Question 7

Segmentation

Answer 7

dividing into segments

Question 8

Skeleton

Answer 8

internal or external framework

Question 9

Sex

Answer 9

biological attributes in organisms

Question 10

embryonic development

Answer 10

formation of embryo

Question 11

larvae

Answer 11

distinct juvenile form of many animals

Question 12

Number of germ layers

Answer 12

Ectoderm (outer), endoderm (inner), mesoderm (middle)

Question 13

Coelom

Answer 13

fluid-filled body cavity (designated space of organs)

Question 14

Protostome

Answer 14

mouth forms first

Question 15

Deterostome

Answer 15

anus forms first

Question 16

Eight invertebrate phyla

Answer 16

Annelids, Nematoda, arthropoda, platyhelminthes, porifera, echinodermata, Cnidaria, and mollusca

“A, N, A, P, P E, C, M”

Question 17

Major characteristics of Porifera

Answer 17

no tissues or organs and most have no symmetry

Question 18

Types of Porifera cells

Answer 18

Epidermis - cover the sponge (protection)

Collar cells - line inside and flagella draw water into the body

Question 19

Porifera three body types

Answer 19

Demosponges - spicules
Calcarea - spicules composed of calcium carbonate
Hexactinellida - spicules composed of silica

Question 20

Path of water through a sponge

Answer 20

enter through pores (ostia) –> central cavity (spongocoel) –> exit through opening (osculum)

Question 21

Cnidarians major characteristic

Answer 21

one body opening, two layers of cells, tentacles armed w/stinging cells, and two body forms: polyp and medusa

Question 22

Cnidarians Classes

Answer 22

Anthozoa - entirely polyp (anemones and corals)
Cubozoa - box shaped body (medusa prominent phase)
Hydrozoa - alternate b/w Medusa and polyp (hydra, fire coral, and portuguese-man-of-war)
Scyphozoa - Medusa (prominent phase) (Jellyfish)

Question 23

Nematocysts

Answer 23

stinging cells

Question 24

Jellyfish habitat

Answer 24

aquatic (cold+warm)

Question 25

Jellyfish tissue make-up

Answer 25

epidermis (outer), mesoglea (middle), and gastrodermis (inner)

Question 26

Jellyfish Nutrition

Answer 26

Carnivores (zooplankton, small crustaceans, small fish, and other jellyfish)

Question 27

Jellyfish reproduction

Answer 27

Asexual (budding or fragmentation)
Sexual (egg+sperm=zygote)

Question 28

Jellyfish life cycle

Answer 28

sperm + eggs –> planula (then settles) –> scyphistoma –> strobila –> ephyra –> young adult –> medusa