Match the following terms and definitions.
1. a fluid of lymph and blood that circulates within invertebrates
interferons
lymphocyte
nephron
2. protein cells that assist in fighting infection and disease
type of leukocyte that makes up the specific immunity
system; capable of building immunity to a disease
excretory tubules in insects and spiders that empty into the
intestine
malpighian tubules
5. the functioning unit of the kidney that produces urine
nephridia
6. tubes in flatworms and earthworms that excrete waste
hemolymph