What are the two main phyla (major groups) of animals? What's the difference between them?
VERTEBRATES (with backbones) and INVERTEBRATES (without).
What is an ENDOSKELETON? What's the opposite?
It's a skeletal system INSIDE the animal's body. The opposite is an EXOSKELETON.
What is BILATERAL SYMMETRY?
The same on both sides of a line going through the middle.
Name TWO TRAITS that mammals have.
They have hair/fur, (mostly) give birth to live babies, mothers feed milk to their young, are warm-blooded, have endoskeletons, are bilaterally symmetrical, etc
Some mammals lay eggs. What are they called? (or: name one)
They're called MONOTREMES. (ex: anteater and platypus)
Name TWO kinds of animals that have BEAKS.
All BIRDS have beaks. A few MOLLUSKS (ex: squid, octopus) do, too.
What TRAIT is UNIQUE to birds?
Feathers.
What are these turtles doing? Why?
They're SUNNING because they're COLD-BLOODED.
What TWO CLASSES of animals are WARM-BLOODED?
Mammals and birds.
Plants make their own food. What's this process called?
It's called PHOTOSYNTHESIS.
