Study the given paragraph and answer the following questions.
The transportation system which supplies nutrients to the tissues directly is called open type of circulatory system.
Eg : Arthropods, many molluscs and lower chordates.
The blood takes the responsibility of delivering the nutrients which flows in the blood vessels is called closed type of circulatory system.
Eg : Echinoderms, cephalopod, molluscs.
(A) Which type of circulatory system do you find in octopus ?
(B) Name the type of circulatory system present in cockroach.
