Respiratory System

Front 1

Porifera Respiratory System

Back 1

Pulls water through pores and collects oxygen through diffusion.

Front 2

Sponge Advantage

Back 2

Constant flow of air in the organism

Front 3

Disadvantage of Porifera

Back 3

It has to filter a lot of water to get a reasonable amount of air.

Front 4

Cnidarian Respiratory System

Back 4

Oxygen diffuses through mesogleac fluid from water.

Front 5

Advantage of Cnidarian

Back 5

It is an easy process and the fluid collects oxygen more effectively.

Front 6

Disadvantage of Cnidarian

Back 6

The organism must be submerged.

Front 7

Worm

Back 7

They breathe through their skin and the mucus layer helps collect oxygen and keep the organism moist.

Front 8

Advantage of Worms

Back 8

Land colonization is possible in the long-term.

Front 9

Worm Disadvantage

Back 9

Worm must stay moist and can die if it ends up on hot pavement.

Front 10

Echinoderms

Back 10

Skin gills on surface of skin collect oxygen and diffuse it across organism.

Front 11

Echinoderm Advantage

Back 11

They have a lot of surface area due to the spines on their skin which increases the rate of diffusion.

Front 12

Echinoderms Disadvantage

Back 12

It is common with starfishes that they may lose an arm which could cause less oxygen to be collected.

Front 13

Gastropods

Back 13

One gill/lung that gets oxygen either from diffusion in water (gill) or from drawing air in from a siphon (lung)

Front 14

Gastropod Advantage

Back 14

They always have an oxygen supply.

Front 15

Gastropod Disadvantage

Back 15

There is not a lot of oxygen and surface area.

Front 16

Bivalve

Back 16

Breathes with two pairs of thin gills with ridges. Water is brought in through the incurrent siphon.

Front 17

Bivalve Advantage

Back 17

It can store water for periods of time to allow it to gain oxygen on land.

Front 18

Bivalve Disadvantage

Back 18

The water can only be held for a certain period of time which commonly leads to death.

Front 19

Cepalopod

Back 19

Two thin feathery gills. Water gets siphoned in when the mantle contracts which pulls the water into the gills.

Front 20

Cephalopod Advantage

Back 20

It is efficient and there is almost always water around a squid.

Front 21

Cephalopod Disadvantage

Back 21

Propulsion is necessary because it helps the mantle contract without putting as much stress on the squid.

Front 22

Insect

Back 22

Has holes in abdomen called spiracles that open up and suck in air. Trachial tubes transport oxygen to different parts of body.

Front 23

Insect Advantage

Back 23

Multiple holes so if one is blocked it still survives and full land colonization is possible without and caveats.

Front 24

Crustacean

Back 24

Gills between carapace and body wall at base of each leg and take in both water and oxygen. Water can be stored in its throat.

Front 25

Crustacean Advantage

Back 25

This system allows the crayfish to not only breathe in water, but on land for long periods of time.

Front 26

Arachnid

Back 26

Spriacles like insects lead to book lungs that are layered like pages and then transport oxygen to the rest of body.

Front 27

Arachnid Advantage

Back 27

Quick and easy diffusion

Front 28

Arachnid Disadvantage

Back 28

Its screwed if anything goes wrong because the lungs are very fragile.