Circulatory system

Read the following statements and select the incorrect ones. (i) Circulatory system in arthorpods is of closed type. (ii) Parapodia in annelids help in swimming. (iii) Phylum Mollusca is the second largest animal phylum. (iv) Aschelminthes are dioecious.

Fill up the blank spaces in the tabe below by selecting the correct option. {:("Phylum/Class","Excretory organ","Circulatory system","Respiratory organ"),("Arthropoda",A,B,"Lungs/Gills/Tracheal system"),(C,"Nephridia","Closed","Skin"),(D,"Methanephridia","Open",E):}

Give examples for the following (a) Bilateral, dorsiventral symmetry is found in ……. . (b) Worms causing disease elephantiasis is …….. . (c ) Open circulatory system is found in …….. Where coelomic cavity is filled with blood (heamolymph). (d) ........ are known to have pseudocoelom.

Given alongside a schematic representation of the circulatory system in man. Study the same and answer the question that follows. What is the specific name of the type of blood circulation that takes place between the heart and lungs?

Read the following statements regarding the human circulatory system. A . The systemic circulation provides nutrients , oxygen, and other essential substances to all the tissues including the lungs. B. A unique vascular connection exists between the digestive tract and the liver is called the hepatic portal system.

The given figure is of circulatory system. Identify the labelled parts (A-D) from the list (i-vii). (i) Pulmonary circulation (ii) Systemic circulation (iii) Superior vena cava (iv) Inferior vena cava (v) Aorta (vi) Veins and venules (vii) Arterioles and capillaries

Which one of the following statements is correct about the human circulatory system? (A) Blood transports only oxygen and not carbon dioxide. (B) Human heart has five chambers. (C) Valves ensure that the blood does not flow backwards. (D) Both oxygen-rich and oxygen-deficient blood gets mixed in the heart.

The ER acts as a circulatory or transporting system. Choose the correct path of transport of substances.