Which of the following is TRUE of an open circulatory system, but is NOT TRUE of a closed circulatory system?

a)Water is drawn into the mantle cavity to provide oxygen to body tissues.

b)Lungs branch into small tubules to provide oxygen to tissues.

c)Wastes are eliminated directly to the environment from tissues.

d)Body tissues are bathed directly in fluid containing oxygen.

thanks. =)

If an invertebrate possesses malphigian tubules, a tracheal breathing system, and an open circulatory system it most likely to be?
A. an earthworm
B. a Butterfly
C. A flatworm
D. Snail
E. Sponge

A couple of examples of animals or insects with an open circulatory system would be very helpful, thank you.

I found one place that said they have an open circulatory system, and another place said closed. I have tried to go by what I know about circulatory systems to match the whaleshark but either sound possible.
Could somebody please verify?
Thankyou.

What type of circulatory system do crayfish have?
(I think this question is asking whether it’s an open circulatory or it goes in veins, arteries, etc.)
Please explain your answer
example…
crayfish have an open circulatory system because…
thanks!!!!

there are open and closed circulatory systems for different organisms, but on all research sites all they say is that amoebae do not have a circulatory system, yet an amoeba uses diffusion. Isn’t diffusion a trait of an open circulatory system?

i’m very tempted to say they have an ‘open’ circulatory system but where does the hemolymph actually flow? in the mesoglea?