| An organism's shape or structure | | |
| An organism's evolutionary history | | |
| Science that groups and names organisms | | |
| Organism whose embryonic blastopore becomes its mouth and shows spiral determinate cleavage | | |
| Organism whose embryonic blastopore becomes its anus and shows radial indeterminate cleavage | | |
| Waste produced by body cells during metabolism of proteins | | |
| Waste resulting from undigested food | | |
| Concentration of nervous and sense organs at anterior end of an organism | | |
| Germ layer from which muscle arises | | |
| Embryonic hollow ball of cells formed when a zygote undergoes mitosis | | |
| Indented place in a blastula that becomes mouth or anus | | |
| Space around body organs | | |