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प्रश्न
What makes the blood look red?
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उत्तर
- The presence of haemoglobin, a red pigment in the red blood cells (RBCs) makes blood appear red in colour.
- The haemoglobin carries oxygen and transports it to all the parts of the body.
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संबंधित प्रश्न
The liquid connective tissue A circulates in our body continuously without stopping. This tissue contains a pigment B which imparts it a colour C. The tissue A consists of four components D, E, F and G. The component D fights infection and protects us from diseases. The component E helps in the clotting of tissue A if a person gets a cut. The component F is a liquid which consists mainly of water with many substances dissolved in it and component G carries oxygen from the lungs to all the parts of the body.
(a) What is (i) tissue A (ii) pigment B, and (iii) colour C?
(b) Name (i) D (ii) E (iii) F, and (iv) G.
(c) Name one substance (other than oxygen) which is transported by tissue A in the human body.
(d) Which two components of tissue A are the cells without nucleus?
(e) Name any two organisms ( animals) which do not have liquid like A in their body.
Name the following:
Components of blood
State the Function: Vitamin K
Direction: In each of the following questions a statement of assertion (A) is given and a corresponding statement of Reason (R) is given just below it. Mark the correct statement as.
Assertion: Persons with AB blood group are called a universal recipient because they can receive blood from all groups.
Reason: Antibodies are absent in persons with AB blood group.
Crab has blue blood.
______ are produced in the bone marrow.
The blood leaving the tissues becomes richer in
Name the only artery that carries carbon dioxide-rich blood.
While learning to ride a bicycle Boojho lost his balance and fell. He got bruises on his knees and it started bleeding. However, the bleeding stopped after some time.
- Why did the bleeding stop?
- What would be the colour of the wounded area and why?
- Which type of blood cells are responsible for clotting of blood?
Find out about blood groups and their importance.
