Which of the below features denotes the parasitic nature of roundworms? 

During fertilization insects utilize internal sperm transfer while the spermatophore is deposited externally in fertilization. 

Which of the below best describes the closed circulatory system of annelids? 

Cephalopods are interesting organisms. They move via and often utilize tentacles with in order to capture prey. Almost all cephalopods utilize to aid in subduing prey. 

Ticks do not cause any issues for humans. 

What distinguishes male and female roundworms? 

Match the following arachnid adaptations to their description:

Match the below organisms to their description:

What type of gland is this?

Which statement best defines evidence?