Fact 1: Organs of excretion make up the excretory system.

Fact 2: Excretory system is composed of a dorsal excretory gland and a pair of Malpighian tubules.

Given the two facts above, answer the question "What are organs of excretion?" with the following options: 
- kalenchoes
 - Malpighian tubes
 - solid, liquid, gas
 - ankles
 - rocks
 - tibias
 - the body's largest organ
 - Veins and arteries.


 

  Malpighian tubes       