Life Science Exam 2

Phylum Annelida

earthworms, closed circulatory, blood flow through skin - oxygen

Arthropoda

jointed appendages/bodies 1) protect 2) exoskeleton 3) impermeable (wings) 4) thorax abdomen

Arachnida

spiders, 8 legs, fangs

Insecta

first animals to go into the air, 6 legs, 3 body segments

Crustacea

lobsters, 2 pairs of antenna

Starfish

water vascular system, 2 classes

Echinoidea

also have water vascular system ex: sea urchin

Holothuroidea

also have water vascular system ex: sea cucumber

Water Vascular System

network of hydraulic canals branching into extensions called tube feet, functions in locomotion, feeding, & gas exchange; 7000 species (all marine life)

Cnideria

1) hydrozoa, 2) skyphozoa 3) anthozoa; have 3 tissue layers; two types: sessile polyp, medusa

platyhelminthes

excretory nervous reproductive systems; 1st well developed organism that has a separate mouth & anus

gastropoda

snails/slugs; protected by shell

bivalvia

2 shelled class (clams, oysters, scallops)

cephalapod

octopus, cuttlefish, squids; well developed brain & nervous system

What is the cell theory?

1) All living things are made up of one or more cells
2) structure & function
3)cells come from other cells
Prokayotic or Eukaryotics

5 Kingdoms

1) mondera: bacteria & blue-green algae
2) protista: amoeba, paramecium, euglena, green, brown, red, golden brown algae
3) fungi: mold, sac, fungi, mushrooms
4) plantae: mosses, ferns, seed plants
5) animalia: inverterbrates & verterbrates

monera

all organisms prokaryotic; grow and adapt rapidly; recycling in ecosystems part of decomposers

protista

eukaryotic; protoraon, algae, slime molds; heterotrophic

adaptations

...