Select your answer:
Topics:
Polio The Skeletal System Introduction to Mycology Transplantation Immunology Musculoskeletal System Regulation of Heart Rate EKG CCMA Cell Theory Trichology Histology HS Confusion, Dementia, & Alzheimers Disease Illnesses and Diseases in Caregiving First Aid Check up Lymphatic System Cardiovascular Adaptation RefresherOther quiz:
T Cells › ViewWhen in doubt choose…
A. A
B. B
C. C
D. D
Circulation and Excretion › View
What type of excretory organs do insects and flatworms have?
A. protonephridia, metanephridia
B. Malpighian tubules, protonephridia
C. metanephridia, Malpighian tubules