What Is An Animal Ch 14.1 7th



Describe the difference between vertebrates and invertebrates

 Describe

the 5 characteristics that animals share

 What

is the best material for washing a

car? › A cotton rag › A scratch pad › An animal skeleton  Write out your answer with an explanation

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

A

snail knocked on a man’s door and asked for a donation to a snail charity. The man didn’t like solicitors and kicked the snail off of his porch. Ten years later, the snail knocked on the door again and said, “That wasn’t a very nice thing to do!”

 More

than 1 million species of animals have been named

 Estimates

that there are more than 3 million species on Earth…

 Corals,

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

 An

animal that has a backbone

 Include:

fishes, amphibians, reptiles, birds, mammals

 Less

than 5% of animal species are vertebrates

 Animals  Most

animal species are invertebrates

 Insects,  Ex:

without backbones

snails, jellyfish, worms

beetles make up about 30% of all animal species



Multi-cellular makeup



Reproduction and development



Many specialized parts



Movement



Consuming

 Made

of many cells

 Eukaryotic  Do

(have a nucleus)

not have cell walls

 Cells

are surrounded by cell membranes

 Reproduce

sexually (sex cells: eggs or

sperm)  Embryo:

an organism at an early stage of development

 Some

asexually: Hydra reproduces by budding

 Cells

in an embryo undergo differentiation

 Differentiation

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

 Cells

for tissues, tissues form organs

 Depends

on life stage; some stages movement is not possible

 Used

etc.

to search for food, shelter, mates,

 Survival

by eating other organisms

 Consumer:

an organism that eats other

organisms  Animals

eat a variety of foods



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

 Answer:

a dead centipede!

 What

do vertebrates have that invertebrates don’t?

 What

are collections of similar types of cells called?

 Animal

Classification:

› Zoologists classify based on similarities

and differences

› Major distinctions: no coelom, a false

coelom, or a true coelom (a cavity that separates the gut from the body wall)

› The animal kingdom has ~ 35 phyla (ex:

Chordata, Vertebrata)

 Invertebrates

(many!)

› Phyla include: Arthropoda (largest phylum:

spiders, millipedes, insects) › Porifera › Nematoda › Echinoderma

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