Ch. 31-34

Which of the following is not an animal characteristics?

• multicellular

• heterotrophs

• eukaryotic

• cell walls

The hollow ball of cells marking the end stage of cleavage during early embryonic development

• blastula

• cleavage

• gastrulation

• gastrula

Layers of embryonic tissues that will develop into adult body parts are produced; embryo folds inward

• blastula

• cleavage

• gastrulation

• gastrula

the immature form of an animal that looks very different from the adult

• larva

• gastrula

• metamorphosis

• nymph

What are the closest living relatives of animals?

• Choanoflagellates

• Choanocilites

• Sponges

Can only cut one way to be symmetrical; complete digestive tract and has a mouth/anus at ends

• bilaterians

• radialians

Concentration of sense organs and neural tissue at anterior end

• cephalization

• specialization

• sensorization

Which of the following is not a germ layer?

• ectoderm

• endoderm

• mesoderm

• diploderm

outermost germ layer

• ectoderm

• endoderm

• mesoderm

• diploderm

innermost germ layer; develops into digestive tract

• ectoderm

• endoderm

• mesoderm

• diploderm