Unit 2

Question 0

Posterior

Answer 0

Tail end

Question 1

Anterior

Answer 1

Head end

Question 2

Dorsal

Answer 2

Back

Question 3

Ventral

Answer 3

Belly

Question 4

Radial symmetry

Answer 4

Body resembles a pie, can be cut into mirror images by cutting through the center at any angle, oral and aboral sides

Question 5

Diploblastic

Answer 5

2 layers of tissue, endoderm and ectoderm but no mesoderm

Question 6

Triploblastic

Answer 6

Endoderm ectoderm and mesoderm

Question 7

Bilateral symmetry

Answer 7

Split down the middle to form mirror images, anterior posterior dorsal ventral

Question 8

Poly stage

Answer 8

Sessile tubular form of jellyfish

Question 9

Medusa stage

Answer 9

Swimming jellyfish bell shaped form

Question 10

Coelomate

Answer 10

Mesoderm completely lines internal cavity, organs held in place and connected to each other via tubes, seen in most bilateral organisms

Question 11

Acoelomate

Answer 11

“Without cavity” mesoderm fills inside cavity, seen in flatworms

Question 12

Pseudocoelomate

Answer 12

“False body cavity” mesoderm does not completely line cavity, seen in roundworms

Question 13

Protosomes

Answer 13

Spiral cleavage, mouth develops at blastopore, insects mollusks and earthworms

Question 14

Deuterostomes

Answer 14

Radial cleavage, anus develops at blastopore, vertebrates and sea stars

Question 15

Phylum Porifera

Answer 15

Sponges, all aquatic most marine, sessile, filter feed

Question 16

Phylum Ctenophora

Answer 16

Comb jellies, 150 species, comb rows of cilia to move, largest organisms that use cilia to move, colloblasts stick to prey, color variety

Question 17

Phylum Cnidaria

Answer 17

Most jellyfish,

Question 18

Phylum Annelida

Answer 18

Segmented worms or Annelids, tube worms, bristle worms, and earth worms

Question 19

Phylum Nematoda

Answer 19

Roundworms, hookworms, pinworms, Nematoda are parasitic worms, caenorhabditis elegans, ascaris lumbricoides, necator americanus,

Question 20

Phylum Platyhelminthes

Answer 20

Flatworms, tapeworms

Question 21

Phylum Nemertea

Answer 21

ribbon worms

Question 22

Class Polychaeta

Answer 22

Marine worms, bristle worm, tube worms, Christmas tree worms

Question 23

Class Hirundinea

Answer 23

Leeches

Question 24

Class Scyphozoa

Answer 24

Jellyfish, most of them. Lions mane jellyfish

Question 25

Class Anthozoa

Answer 25

Sea anemone, corals

Question 26

Class Hexactinellida

Answer 26

Glass sponges, Venus flower basket, silica spicules

Question 27

Most deadly animal?

Answer 27

Mosquito

Question 28

How do you correctly write a genus species name?

Answer 28

First name is capitalized genus name, second name is specific lowercase epithet, they are italicized or underlined

Question 29

Taxonomic ranks

Answer 29

Kingdom phylum class order family genus species

Question 30

What are the flagellated cells responsible for water movement in sponges called?

Answer 30

Choanocytes

Question 31

Light sensitive eyespots

Answer 31

Ocelli

Question 32

Structure of earthworms that aids in copulation?

Answer 32

Clitellum secretes mucus to hold them together

Question 33

Class Trematoda

Answer 33

Parasitic flukes

Question 34

Class cestoda

Answer 34

Parasitic tapeworm