This document classifies and describes different groups of animals. It divides animals into two main groups: invertebrates without backbones, which make up over 96% of species and include arthropods, mollusks, worms, sponges, and cnidarians; and vertebrates with backbones, which include fish, amphibians, reptiles, birds, and mammals. It provides distinguishing characteristics of each group, such as their body structure, temperature regulation, habitat, and locomotion.
2. Standard:
S5L1a. Demonstrate how animals are sorted in
to groups (vertebrate and invertebrate) and
how vertebrates are sorted into groups
(fish, amphibian, reptile, bird, and mammal).
Main idea: The differences between animals
determine how they are classified.
3. Characteristics of
Animals
•Many –celled
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•Require oxygen http://4.bp.blogspot.com/-NO-
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•Eat food
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•Most move
from place to
place
•Reproduce
sexually
4.
5. Animal Species
Over 96% of
1% 1% all animals
1%
4%
4% today are
5%
Arthopods
invertebrates!
Mollusks
Worms
Vertebrates
Sponges
Cnidarians
84% Echinoderms
6. Invertebrates
Animals without a backbone are invertebrates.
Over 96% of the animal species are invertebrates.
Review:
Symmetry- a matching pattern of body shape.
Radial symmetry – body parts arranged equally
around a middle point
Bilateral symmetry – bodies with two similar
halves
11. Arthropods
• lobsters, crabs, spiders, and insects
• largest group of animals
• jointed parts surrounded by an
exoskeleton (hard covering)
•Bilateral symmetry
12. Sponges
• Lack
tissues, organs
and true body
symmetry
•Most live in
oceans, a few live
in freshwater
•Filter bits of food
from water that
passes through
them
14. Worms
• Includes
flatworms, roundworms &
segmented
Worms.
•Bilateral symmetry
•Heads and simple organ
systems
•Some are parasites – they live
and feed off the body of a host
16. Let’s review!!
Vertebrates – animals with a backbone
Cold-blooded – the temperature of the animal
depends on the temperature outside their
bodies
Warm-blooded – the animal’s body maintains
its own heat
Let’s learn about Vertebrates!!
17. Cold-blooded Vertebrates-
Ectotherms
• Reptiles
• Amphibians
• Fish
The body temperature of a cold-
blooded (ectotherms) animal depends
on the temperature outside their
bodies.
18. Fish
• Most have a bony
skeleton (sharks have
cartilage skeleton)
•Gills to breathe in
water
•Most cold-blooded
•Scales
•Swim bladder
19. Amphibians
•
frogs, toads, salamanders, ne
wts included
• need to live close to water
• some have lungs
• some breathe through skin
• need water to reproduce
• salamanders & newts
•have tails
•most live near water –
some in deserts though
20.
21. Warm-blooded Vertebrates -
Endotherms
•Birds
•Mammals
Maintain constant internal body
temperatures – body cells produce heat
22. Birds
• live almost anywhere in
world
• feathers
• beaks instead of teeth
• some eat mammals, fish
and other birds
• some eat insects
• some eat plants/seeds
23. Mammals
Humans are mammals
Most complex organs & nervous system
large brain
complex behaviors
hair – even whales have whiskers
feed milk to young
most have teeth
can move place to place