Metamorphosis
What is the difference between complete metamorphosis and incomplete metamorphosis?
Complete: The insect starts looking nothing like the adult. It starts as a larva. The pupa stage involves a chrysalis/cocoon.
Incomplete: The insect goes through a gradual change since it begins as a smaller version of the adult. It starts as a nymph (baby adult) then grows and molts several times. There is no cocoon/chrysalis stage.
What are the 5 classes of invertebrates?
1. arthropod (insects/arachnids/crustaceans)
2. annelid (worms)
3. echinoderm (starfish/sea urchins/sand dollars/sea cucumbers)
4. mollusk (clams/octopuses/slugs)
5. porifera (poe-Rif-er-a sponges)
What are the three groups of arthropods?
1. Insects
2. arachnids
3. crustaceans
Name 2 types of insects that go through complete metamorphosis.
1. butterflies
2. moths
3. flies
4. beetles
This is an invertebrate with a soft body. Some of these have shells.
MOLLUSKS
This invertebrate has an endoskeleton and usually spiny skin.
ECHINODERM (i-kai-no-derm)
Name 2 types of insects that go through incomplete metamorphosis.
1. grasshoppers
2. cockroaches
3. praying mantises
4. walking sticks
5. termites
6. lice
This invertebrate has an exoskeleton, body segments, and jointed legs.
ARTHROPOD
This is an arthropod with three body segments and six legs.
INSECT
Name the stages in complete metamorphosis.
1. egg
2. larva
3. pupa (cocoon/chrysalis)
4. adult
This invertebrate has surface body segments, simple body systems, no hard outer shell or skeleton and no legs.
ANNELID
This is an arthropod with an exoskeleton that can fuse together.
CRUSTACEAN
Name the stages in incomplete metamorphosis.
1. egg
2. nymph (grow and molt)
3. adult
This invertebrate has a simple skeleton, no muscles, and no brain.
SPONGE
An arthropod with two body segments and eight legs.
ARACHNID