Given below is a diagram of a smear of human blood. Study the same and answer the question that follows:

(a) Name the parts 1, 2, 3 and 4 indicated by guidelines.
(b) Mention two structural differences between the parts labelled '1' and 2
(c) What is the main function of the parts labelled 1. 2 and 3 respectively?
(d) What is the lifespan of the part labelled '1'?
(e) Name a soluble protein found in 4 which helps in the clotting of blood.

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Solution

(a)

Red Blood Cell (RBC),

White Blood Cell (WBC),

Blood Platelet

Blood Plasma.

(b) The red blood cells are minute biconcave disc-like structures whereas the white blood cells are amoeboid.

(c)The function of part 1 (RBC): Transport of respiratory gases to the tissues and from the tissues.
The function of part 2 (WBC): WBC plays a major role in defence mechanism and immunity of the body.
The function of part 3 (Blood Platelet): Blood platelets are the initiator of blood clotting.

(d) The average life span of a red blood cell (RBC) is about 120 days.

(e) Thromboplastin

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Q. Given below is a diagram of a smear of human blood. Study the same and answer the questions that follow:
a. Name the parts 1, 2, 3 and 4 indicated by guidelines.
b. Mention two structural differences between the parts labelled '1' and '2'.
c. What is the main function of the parts labelled 1, 2 and 3 respectively?
d. What is the life span of the part labelled '1'?
e. Name a soluble protein found in '4' which helps in the clotting of blood.

Study the diagram given below and then answer the questions that follow:

(a) Identify the tissue and give a reason to support your answer.
(b) Name the parts labelled 1, 2, 3, and 4.
(c) Where is this tissue likely to be found in the plant ?
(d) State the function of the parts labelled 1, 2, 3 and 4.