Open Circulatory System

Q.

Which of the following has a closed circulatory system?

1. Annelids

2. Arthropods

3. Platyhelminthes

4. Molluscs

Q.

The heart of cockroach is

1. 29-chambered

2. 9-chambered

3. 6-chambered

4. 13-chambered

Q.

What are some examples of open circulatory systems? How does the open circulatory system work?

Q.

Which of the following statements is correct about the circulatory system in animals?

1. Blood circulation occurs in closed vessels in arthropods

2. In annelids, the tissues are not in direct contact with the circulating fluid

3. In fishes, the heart pumps deoxygenated blood only

4. The circulatory system transports excretory substances to the excretory organs

Q. Q) Circulatory system is well developed in most of the organism;
a. What is the significance of a circulatory system in organism?
b. What is the difference between open and closed type of circulatory
system?

Q.

Open vascular system is found in:

1. fish

2. man

3. prawn

4. snake

Q. Which one of the following statements is NOT CORRECT?

1. The circulatory system transports excretory substances to the excretory organs
2. Blood circulation happens in closed vessels in arthropods
3. In annelids, the tissues are not in direct contact with the circulating fluid
4. In fishes, the heart pumps deoxygenated blood only

Q. The movement of blood between heart and lungs is called _____________.

1. pulmonary circulation
2. double circulation
3. coronary circulation
4. systemic circulation

Q. Distinguish between P-wave and T-wave.

Q. Respiratory pigment of molluscs is

1. Haemocyanin
2. Haemoglobin
3. Erythrocruorin
4. Chlorocruorin

Q. Draw a standard ECG and explain the different segments in it.

Q. where are ostia and sinuses present in cockroach?