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Describe the difference betweenvertebrates and invertebrates

Describe the 5 characteristics thatanimals share

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What is the best material for washing acar?

A cotton rag A scratch pad

An animal skeleton

Write out your answer with an explanation

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http://img.alibaba.com/photo/100443739/Natural_Sea_Sponges_Fine_Silk_.jpg

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A snail knocked on a mans door andasked for a donation to a snail charity.

The man didnt like solicitors andkicked the snail off of his porch.

Ten years later, the snail knocked onthe door again and said, That wasnt a

very nice thing to do!

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More than 1 million species of animalshave been named

Estimates that there are more than 3million species on Earth

Corals, spiders, fish, birds, slugs,kangaroos, monkeys, feather stars,sponges

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An animal that has a backbone

Include: fishes, amphibians, reptiles,birds, mammals

Less than 5% of animal species arevertebrates

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Animals without backbones

Most animal species are invertebrates

Insects, snails, jellyfish, worms

Ex: beetles make up about 30% of allanimal species

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Multi-cellular makeup

Reproduction and development

Many specialized parts

Movement

Consuming

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Made of many cells

Eukaryotic (have a nucleus)

Do not have cell walls

Cells are surrounded by cellmembranes

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Reproduce sexually (sex cells: eggs orsperm)

Embryo: an organism at an early stageof development

Some asexually: Hydra reproduces bybudding

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Cells in an embryo undergodifferentiation

Differentiation lead to cells becoming:skin cells, muscle cells, nerve cells

Cells for tissues, tissues form organs

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Depends on life stage; some stagesmovement is not possible

Used to search for food, shelter, mates,etc.

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Survival by eating other organisms

Consumer: an organism that eats otherorganisms

Animals eat a variety of foods

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Question: What lies on the forest floor, 100feet in the air?

Answer: a dead centipede!

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What do vertebrates have thatinvertebrates dont?

What are collections of similar types ofcells called?

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Animal Classification:

Zoologists classify based on similaritiesand differences

Major distinctions: no coelom, a falsecoelom, or a true coelom (a cavity that

separates the gut from the body wall)

The animal kingdom has ~ 35 phyla (ex:Chordata, Vertebrata)

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Invertebrates (many!)

Phyla include: Arthropoda (largest phylum:spiders, millipedes, insects)

Porifera

Nematoda

Echinoderma

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http://www.mysciencesite.com/Animal_Kingdom_Tree_-_good.gif