What is the function of WBCs?
(a) Transport of oxygen
(b) Fight against germs
(c) Involved in blood clotting
(d) All of these
Answers
Answer:
(B) fight against germs
Explanation:
Hope it will helpful
Required Correct Answer:
(b) Fight against germs
Explanation:
WBCs are White blood cells that are one of the major components of blood. They are also called leukocytes as they are colourless. They are amoeboid, that is, they do not have a specific shape. Their main function is to fight disease causing microbes that can be bacteria, viruses, fungi etc. They are part of the immune system that gets produced in the bone marrow present in the bones.
Exploring the other options:
(a) Transport of oxygen
This function is done by the red-blood cells due to the presence of hemoglobin.
(c) Involved in blood clotting
This function is done by the platelets, another major component of blood.
(d) All of these
As (a), (b) and (c) are three different functions done by three different components, this option is not applicable.
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Blood:
Blood is a connective tissue that flows through the veins and arteries of our body. They carry essential nutrients and oxygen to all body parts and collect the waste material from these parts to be disposed off the body. The lungs oxygenate the deoxygenated blood and the heart pumps it to all body parts.
Just like all connective tissues, blood too contains a matrix and all these components are present in this liquid matrix. The liquid matrix is the plasma, a straw coloured matrix. The various components present in it are discussed below:
✳ Reb blood cells [RBCs] - They are red in colour due to the presence of hemoglobin and transports oxygen and other essential nutrients to all parts of the body. They also help to carry the waste material to the respective excretory organs. They are disc shaped cells
✳ White blood cells [WBCs] -They are colourless and their main function is to fight off disease causing microbes. They are part of the immune system and prevents us from catching diseases. They are amoeboid.
✳ Platelets - Platelets are another essential component of blood that helps in clotting of blood. Once a wound opens, blood starts moving out of the wound, the platelets in the blood helps to clot the blood, thus causing a temporary closing of the wound. They are irregularly shaped cells.