You are Radha, the head girl of Pratibhasthali Gyanodya Vidyapeeth. Your school is
organizing a tour to Rajasthan. Write out a notice inviting students who want to join the
tour. Put the notice in the box.
Answers
Blood clotting or coagulation occurs in a series of the following steps:
The injured tissue cells and the platelets disintegrate at the site of wound to release thromboplastin.
The thromboplastin with the help of calcium ions converts inactive prothrombin into active thrombin.
Thrombin in the presence of calcium ions converts soluble fibrinogen into insoluble fibrin which forms a mesh or network at the site of wound.
The blood cells trapped in this network shrink and squeeze out the plasma to leave behind a solid mass known as the clot.
Answer: Tour Notice
Explanation:
Greetings to all the students of Pratibhasthali Gyanodya Vidyapeeth! I am Radha, your head girl. There is a very exciting news I bring up to you. Our school has organized a tour to Rajasthan! All the students who would like to be a part of this tour, where the entire school community will unite and step ahead, then drop your details in the notice box located in the 4 corners of the ground floor. Looking forward. Thank you!~