Lab 9

Question 1

Porifera

Answer 1

Sponges. numerous intake pores with outflow openings. Similar to the earliest animals

Question 2

Cnidaria

Answer 2

Asexual, jellyfish like creatures with mouth facing down OR polyps with mouth facing up. All have specialized stinging cells

Question 3

Echinodermata

Answer 3

Sea Stars, feather stars, seas lilies, and sea cucumbers.

Question 4

Chordata

Answer 4

Vertebrates (fish, amphibians, reptiles, birds, and mammals).

Question 5

Platyhelminthes

Answer 5

Worm-like creatures (flatworms, tapeworms)

Question 6

Mollusca

Answer 6

Cuttlefish, slugs, snails

Question 7

Annelida

Answer 7

Earthworms, leech, sand worms. If cut in half, the front may survive, but the back will die. Several hairs may aid in locomotion

Question 8

Nematoda

Answer 8

Outer layers must be molted. Roundworms. They move through lashing movement since they have no circular muscles.

Question 9

Arthropoda

Answer 9

Spiders, scorpions, Horseshoe crabs, insects and crustaceans.

Question 10

General Characteristics

Answer 10

Reproductive system, Nervous System, Respiratory system, excretory system, circulatory system, Digestive system, Body Cavity, Appendages, Symmetry, Sessile, Segmentation, Fertilization

Question 11

Reproductive Types

Answer 11

Hermaphroditic, sexes separate.

Question 12

Symmetry

Answer 12

None, Radial, Bilateral

Question 13

Nervous Systems

Answer 13

None, nerve net, nervous system with brain

Question 14

Digestive Tract

Answer 14

None, Incomplete, or Complete

Question 15

Circulatory System

Answer 15

None, Open or Closed

Question 16

Respiratory System

Answer 16

None, gills, lungs, trachea, other