If apesticide is used for protecting plants by killing something with a head, thorax, and abdoment, then apesticide is used for protecting plants by killing what?

Answer choices:
- Something with a stalk
 - Something made primarily of oxygen and nitrogen
 - Something with a head, thorax, and abdomen
 - Something with a backbone
 - animals in the class reptilia
 - spring, summer, autumn, winter
 - Something with a single cell
 - Microscopic organisms

 

   Something with a head, thorax, and abdomen       