Experiment 2: Creating a Phylum Key

27 Jun Experiment 2: Creating a Phylum Key

Question
Experiment 2: Creating a Phylum Key

Table 2: Phylum Taxonomic Key

Porifera

Cnidaria

Platyhelminthes

Annelida

Arthropoda

Mollusca

Echinodermata

Chordata

Post-Lab Assessment

1. Were any of the features used in more than one Phyla? If so, give an example of an organism from each phyla that shares the feature.

2. List three features from Table 1 that describe a Monarch butterfly (Danaus plexippus)? Using the features you listed, determine what phyla it is classified in.

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llali) · Invertebrates and Vertebrates

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Experiment 2: Creating a Phylum Key

In this experiment you will take a closer look at the characteristics that describe the eight major

phyla.

Table 1 Table 2

Procedure

1. Table 1 contains all of the main features of the eight major phyla discussed in the

Introduction. Organize and identify which characteristics belong to which phyla in the key. The

number of rows in the key repre- sents the number of characteristics that fall into each phylum.

2. Record your results in Table 2.

Bilateral phy- lum with seg-

Most have a calci- Specialized cell, Mantle of

tissue covering Five part symmetry

mentation

um containing shell

but no tissues the body

Hollow body Three tissue layers, Setae used for Jaws and skulls cavity for food

no body cavity movement part of evolution

Complete digestive tract

Parasites

Water flows through The first to have The first phylum canals of body

jointed legs to fly

Some have stinging cells

More complex

Body design is a First muscle and

because of Tube feet

Internal skeleton tube within a tube

nerves

more DNA

Entrance and exit

All live in the Simple animals with All have verte-

Champions of variations in the same in the

sea bilateral symmetry

digestive tract

bral column appendages

Has the most Have spines cov- Some stationary Some are mobile Some propel

using their species ered with a thin skin polyps medusa

siphon

Muscular foot Tubular mouth at

Hard but flexible bodies Stationary animal

Humans

used to move the mid-body

with small plates

Spicules are

Their burrowing has affect-

Radula used to feed No symmetry Exoskeleton

the skeleton

ed the global climate

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