Invertebrates
General
General
What do we call an animal that does not have a backbone or a spine?
invertebrate
This is the largest group of invertebrates, with over 1 million species.
Arthropods
What is the name of the arthropod group that has "many legs," sometimes up to 200 pairs?
Myriapods (like centipedes and millipedes)
What word is pronounced differently?
attended
accepted
baked
baked
What is the past of
shine
shone
Around what percentage of all animals on Earth are invertebrates?
Around 97%
What are the three main parts of an arthropod’s body?
The head, the thorax, and the abdomen
These animals have soft bodies and use a "muscular foot" to move around.
Mollusks
Which word is pronounced /d/
watched
devided
shared
shared
Past of
sell
sold
What is the hard outer covering that many invertebrates use to protect their bodies?
An exoskeleton
Which group of arthropods always has exactly six legs?
Insects
What hard structure do many mollusks, like snails and clams, use for protection?
A shell
What word is not pronounced /t/
joked
called
cooked
called
Past of sing
sang
What must an invertebrate do when it grows too big for its hard outer shell?
It must shed it and grow a new one
Spiders and scorpions belong to this group and have eight legs.
Arachnids
Octopuses and squids are mollusks that move in a special way. How do they do it?
By forcing water out of their bodies
The word stopped is pronounced with:
/t/
/id/
/d/
/t/
Past of sit
sat
Most animals are invertebrates and are sorted into how many main groups?
Eight groups
Which group of arthropods usually lives in the ocean and has 10 to 14 legs?
Crustaceans
This group’s name means "spiny skin."
Echinoderms
pronunce this word:
wasted
/ed/
past of shake. Spell it
shook