Cockroach and mosquitoes are different from Chaetopleura because of
(A) Chitinous exoskeleton and closed type circulatory system
(B) Jointed legs and malphigian tubules
(C) Segmented body with visceral mass
(D) open type circulatory system and water canal system

Differentiate between open and closed type circulatory system with reference to occurrence, position of blood and significance.

How does open circulatory system differ from closed circulatory system? Give example for each.

Differentiate between (a) Open circulatory system and closed circulatory system. (b) Oviparous and viviparous characteristic. (c ) Direct development and Indirect development.

Open circulatory system is present in : (A) Arthropods (B) Annelids (C) Chordates (D) Molluscs

Answer the following: (i) What is the function of nephridia ? (ii) Give three difference between frogs and toads. (iii) What do you understand by open type of circulatory system ? Give a suitable example. (iv) How many types of nephridia are found in earthworm based on their location ?

Write the differences between: (a) Blood and Lymph (b) Open and Closed system of circulation (c) Systole and Diastole (d) P-wave and T-wave

Circulatory System Introduction || Blood Vascular System OF Different Animal Groups || Open Vs Closed Circulatory System || Body Fluids

(a) What type of circulatory system is there in cockroach ? (b) How many , chambered heart helps in the circulation of blood in cockroach's body ?