Question

Match the columns.

	List 1		List 2
A.	Capillaries	1.	Carries digested fat
B.	Lymph	2.	Oxygenated blood
C.	Left ventricle	3.	Deoxygenated blood
D.	Pulmonary artery	4.	RBC
E.	Haemoglobin	5.	Exchange of materials
F.	Birds	6.	Three-chambered heart
G.	Fish	7.	Four-chambered heart
H.	Amphibians	8.	Two-chambered heart

• A. H- 7, G- 8, F- 6, E- 5, D- 3, C- 4, B- 1, A- 2
• B. H- 6, G- 8, F- 7, E- 5, D- 3, C- 4, B- 1, A- 2
• C. H- 6, G- 8, F- 7, E- 4, D- 3, C- 2, B- 1, A- 5
• D. H- 6, G- 8, F- 7, E- 4, D- 2, C- 2, B- 1, A- 5

Answer 1

The correct option is C H- 6, G- 8, F- 7, E- 4, D- 3, C- 2, B- 1, A- 5

H) Amphibians have three-chambered hearts and tolerate some mixing of the oxygenated and de-oxygenated blood streams.

G) Fish have only two chambers in their hearts and the blood pumped to the gills is oxygenated there and it passes directly to the rest of the body.

F) The separation of the right side and the left side of the heart is useful to keep oxygenated and de-oxygenated blood from mixing. Such separation allows a highly efficient supply of oxygen to the body. This is useful in animals that have high energy needs, such as birds and mammals, which constantly use energy to maintain their body temperature.

E) The respiratory pigment haemoglobin has a very high affinity for oxygen. This pigment is present in the red blood corpuscles (RBCs).

D) The pulmonary artery carries deoxygenated blood from the heart to the lungs.

C) The oxygenated blood from the lungs enters the left atrium first.

B) The lymph carries digested and absorbed fat from intestine and drains excess fluid from extracellular space back into the blood.

A) Exchange of materials between blood and the surrounding cells takes place across the thin walls of the capillaries.

Hence, the correct answer is option C.