Which of the following statements is true?
oysters and clams belong to the crustacea class.
all vertebrates belong to the chordata phylum.
insects and arachnids go through metamorphosis.
both animals and plants have nervous systems.

choose all the applay
sponges are different from other animals in that they:

move only as adults
move only as juveniles
are completely sessile
exhibit no bi-lateral symmetry
possess specialized tissue
possess uniform tissue

which of the following statements is true?
there are more species of vertebrates than invertebrates.
the largest phylum in the animalia kingdom is arthropoda.
sponges are not truly animals because they have cell walls.
all animals in the chordata phylum are vertebrates.

and the last question is :
match each animal with the correct classification.
it has a pictuer down there..