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Animals

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by

Sara White

on 25 May 2016

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Transcript of Animals

Animals
Simple Invertebrates
Mollusks and Annelid Worms
Arthropods
Echinoderms
Fish
Amphibians
Reptiles
Birds
Mammals
Simple Invertebrates
1. SPONGES
*live in water

*regenerate - replace body parts

*simple (no gut)
2. CNIDARIANS
*live in water

*stinging cells

*gut and nervous system

ex: Jellyfish and sea anemone
3. Flatworms
-tapeworm & fluke
4. Roundworms
- most are parasites
- they need a host
Phylum Platyhelminthes
bilateral symmetry
Phylum Porifera
asymmetrical
phylum Cnidaria
Mollusks and Annelid Worms
Mollusks
Annelid Worms
a. Gastropods - slug/snail
b. Bivalves - clam
c. Cephalopods - squid/octopus
*all share same features
foot - use to move
visceral mass - gills, gut, organs
mantle- layer over the v.m.
Shell - most have
Segmented
Examples:
Earthworm
Bristle worms
Leeches
Arthropods
Characteristics
* Jointed limbs "arthro" - joint and "pod" - foot
* Segmented body with specialized parts
* Exoskeleton - external
* Nervous system is well developed
1. Centipedes and Millipedes
* Single pair of antennae


* Centi - 1 pair of legs per segment

* Milli - 2 pairs of legs per segment
2. Crustaceans
* 2 pairs of antennae and eyes

* examples: Shrimp, crab, lobster
3. Arachnids
* 4 pairs of legs

* examples: scorpions, spiders, ticks
Echinoderms

* Spiny skinned
* Endoskeleton (internal)
* Adults - radial symmetry
* Have a nervous system
Characteristics
Examples
Star fish, sand dollar, sea urchin
Fish
Characteristics



Other Facts
* born to swim - muscular body
* vision, hearing, smell
* gills
* fertilization is external
* found in almost every water env
* first vertebrates
* 25,000 species
1. Jawless
* example: Lamprey
2. Cartilaginous
* example: rays and sharks
3. Bony fish
* examples: goldfish and minnow
Amphibians
* means double life
* develop from egg (in water) to adult (on land)
* thin skin - absorb oxygen
sensitive to drying out
Types
1. Caecilians

2. Salamanders

3. Toads

4. Frogs
No legs - look like earthworms or snakes
Lizard like body - thin skin
Dry, leathery skin - short legs
Short bodies, tailless
Facts
* 5,000 - 6,000 species of amphibians
*amphibians were the first 4 limbed vertebrates
Reptiles
Characteristics
*Thick skinned - water tight
*Cold blooded
Hot - active
Cold - slow
*Amniotic egg - shell around the egg
Types
1. Turtles and Tortoises

2. Crocodiles and Alligators

3. Lizards

4. Snakes
*250 species
*22 species
*4000 species
*1600 species
Birds
Characteristics
* Scales on legs and feet
* Amniotic eggs
* Beaks
* Feathers and Wings
* Some fly (high energy)
Types
1. Flightless

2. Water

3. Birds of Prey

4. Perching Birds
Mammals
Characteristics
*Mammary glands - milk for young
*Endotherm - maintain body temp
*Specialized teeth - incisors, canines
*Parents - protective of their young
Kinds of Mammals
1. Monotremes 2. Marsupials 3. Placental
*lay eggs
*ex: Echidna
*pouch
*ex: Kangaroo
*uterus
*90% mammals
A. Toothless
B. Insect eaters
C. Rodents
D. Lagomorphs
E. Flying
F. Carnivores
G. Hoofed
H. Trunk nosed
I. Cetaceans
J. Sirenia
K. Primates
Order Edentata
Ex: sloth, armadillo
Order Insectivora and Macroscelida
Over 250 Species
Ex: mole and shrew
Order Rodentia (single pair of growing incisors)
Over 2000 species
Ex: Rats, mice, groundhog
Order Lagomorpha
Over 80 species
Ex: Rabbit and hare
Order Chiroptera
Ex: Bats and gliding possums
Order Carnivora
Over 270 species
Ex: skunks, cats, sea lions
Order Ungulates
Ex: Bison and caribou
Family: Elephantidae
Ex: Elephant
Order Cetacea
Stream lined body, paddle shaped limbs
Ex: Blue whale and dolphin
Order Sirenia
4 species - herbivores and slow moving
Ex: Manatee
Order Primate
Over 424 species
Ex: Humans, monkeys
Animal Behavior
Innate: Something that doesn't rely on learning or experience

Learned: Behavior that has been gained by experience
ex: earthworm burrowing or insect flying
ex: washing food, using tools
Survival:

Predator/Prey

In your face

Warning
Seasonal

Migrating

Hibernating
Camouflage
Freeze
Hide
Clear signs
Bull horns - spikes
Chemical defense - stay away
Full transcript