Animal Diversity 1

Question 1

2 main body layers = endoderm and ectoderm

Answer 1

Diploblastic

Question 2

All animals develop from _____

Answer 2

Eggs

Question 3

Ingest and egest through singular mouth opening

Answer 3

Blind gut

Question 4

Each colony only had either male or female individuals

Answer 4

Dioecious

Question 5

Animals are all ________

Answer 5

Heterotrophs

Question 6

No nervous system, no digestive system, no circulatory system

Answer 6

PHYLUM PORIFERA

Question 7

Medusa stage is _____ and is the ________ stage

Answer 7

Independent, reproductive

Question 8

Most have a polyploid and medusoid stage

Dioecious

Answer 8

PHYLUM CNIDARIA

Question 9

Fresh water species, only polyps
Blind gut
Diploblastic
Reproduction asexually, grows buds- break off and grow into new adults
If conditions are not favorable will sexually reproduce
Feeding: extend tentacles to catch prey sting them with nematocytes move into the body cavity for digestion
Nervous system: simple nerve net photo receptors and touch sensitive nerve cells
Circulatory system: diffusion through walls
Locomotion: looping or somersaulting with basal disk

Answer 9

HYDROZOA: hydra

Question 10

Have both polyp and medusa stages

found world wide

Answer 10

HYDROZOA: Obelia

Question 11

Have both medusa and polyp forms
Up to 98% water
Nervous system: nerve net or nerve rings
Circulatory system: diffusion through body mostly water
Feeding: mouth, central stromach, diverticula radiating outward, catch prey with nematocytes

Answer 11

CNIDARIA: SCHYPHOZOA

Question 12

Cnidocyte or cnidoblast or stinging cells
Capsule surrounded by a coiled tubule containing toxins
-usually neurotoxins that paralyze prey
Works like a trigger

Answer 12

Nematocysts

Question 13

Anemones and corals
No medusa stage
Feeding: ring of tentacles around mouth, pharynx, and gastrovascular cavity
Have symbiotic relationship with zooxanthellae

Answer 13

CNIDARIA: ANTHOZOANS

Question 14

Zoos use the ________ waste and _________, zoos feed the corals with _______ and increase _______ production (to build their houses)

Answer 14

Nitrogenous, carbon dioxide, photosynthesis, calcium carbonate

Question 15

Anemone reproduction

Spawn eggs and sperm through mouth

Asexually by budding or ______

Answer 15

Binary fission

Question 16

Flatworms
Bilateral, unsegmented
No circulatory system
Digestion one opening for ingestion and egestion
Acoelomate
Some parasitic

Answer 16

PLATYHELMINTHES

Question 17

No body cavity

Answer 17

Acoelomate

Question 18

Segmented bilateral bodies
Coelomates
Parapodia with setae
Oligocates clitellates hirudinea have no parapodia some have setae

Answer 18

ANNELIDA

Question 19

Fluid filled body cavity with a complete lining derived from the mesoderm

Answer 19

Coelomates

Question 20

Little legs/feet

Answer 20

Parapodia

Question 21

Bristles

Answer 21

Setae

Question 22

Marine segmented worms

Simple circulatory system

Answer 22

ANNELIDA Polychaetes

Question 23

Earth worms
Segmented terrestrial 
Have Satae no parapodia
Eat detritus 
Circulatory system: diffusion through skin must be kept moist

Answer 23

ANNELIDA: Oligochaetes

Question 24

Leeches
Segmented fresh water
Hermaphroditic

Answer 24

ANNELIDA: Hirudinea