Invertebrate 1
More than _____ out of every 100 animals are invertebrates
95
How are animals similar? T/F - If F, explain why.
1. All animals are made of many cells
2. All animals can move on their own
3. All animals carry out the 5 basic life functions
1. T
2. F - Most, not all
3. T
What is the largest class of vertebrates?
Bony fish
All mammals have _____ or _____
fur; hair
An echinoderm has _______ skin and an ________ support structure called ________.
Spiny; internal; endoskeleton
A millipede has _____ pair(s) of legs on each body section. Centipedes have _____ pair(s) of legs on each body section.
Two; one
Where do amphibians live?
Part water, part land
Classify yourself.
Vertebrate? Invertebrate?
Cold-blooded? Warm-blooded?
Class?
Group?
Vertebrate
Warm-blooded
Mammal
Mammals that develop inside
Most mollusks have ______ and they all live in water. Except _____ and ______, they are the only mollusks that live on land.
Shells; snails, slugs
What is the largest invertebrate group?
What do they all have in common? (2)
Arthropods
1. Have jointed legs and a body that is divided into sections
2. Have an exoskeleton
Why does an amphibian's skin need to stay moist?
Give an example of an amphibian.
They breathe through their skin. If it dries out, the animal will not survive.
ex) frogs, toads, and salamanders
Why does a warm-blooded animal's body temperature not change much?
Why can't a cold-blooded animal keep a constant body temperature?
- They get heat from breaking down food which helps them keep a constant body temperature
- Their body temperatures change with their surroundings so it is constantly changing
What is an exoskeleton?
Why do arthropods have them?
What happens when arthropods grow?
A hard covering that protects the body
Keeps in moisture so the animal doesn't dry out
Many arthropods shed their exoskeletons so they can grow bigger
What is the simplest kind of invertebrate?
Do they have symmetry?
Why do they need to live in water? (2)
Sponges - no symmetry
1. Need the support of water to maintain their body shape
2. They filter the water for food
How are the 3 main groups of mammals classified?
What are the 3 groups?
What do all females do for their youngs?
By how the young are born
1. Mammals that lay eggs
2. Mammals with pouches
3. Mammals that develop inside
Produce milk to feed their young
What kind of skin do reptiles have?
What covers their skin?
Do they breathe through their skin? Explain.
Give examples of reptiles.
Dry skin
Plate-like scales
No, they use their lungs
Lizards, snakes, turtles, and alligators
List the 8 invertebrate groups.
1. Mollusk
2. Cnidarians
3. Sponges
4. Echinoderms
5. Flatworm
6. Roundworms
7. Segmented worms
8. Arthropods
What are the 4 arthropod groups?
Which of them is the largest arthropod group?
1. Insects (largest)
2. Arachnids
3. Crustaceans
4. Centipedes and millipedes
What are the 2 types of vertebrates?
What are the vertebrate groups for each type?
Warm-blooded
- birds
- mammals
Cold-blooded
- fish (cartilaginous, jawless, bony)
- amphibians
- reptiles
Birds are the only animals that have ________
What are the 4 traits that help a bird fly?
Feathers
1. Light, hollow bones
2. Powerful lungs
3. Shape of their wings
4. Strong flight muscles