Health is the basic to life, and is essential for the good results in any sphere of life. A factory owner cannot expect the optimum output, if he does not employ healthy workers. A farmer cannot get optimum yield in his fields, if he is not healthy What does health actually mean? How is it related to our personal life & professional efficiency?

Some human diseases are transmitted only when the blood of a patient comes in contact with the blood of a healthy person. In one of such disease, there is a progressive decrease in the number of lymphocytes of the patient.
i) Name the disease & its causative agent
ii) Name the type of lymphocytes affected due to this infection.

Some international sports persons failed in dope tests& not allowed to participate in Olympics as they were drug abusers
i) Name the drugs that would have been taken by them.
ii) Why did they use such drugs?

Name any two organisms that are responsible for ringworms in humans. Mention two diagnostic symptoms. Name the specific parts of the human body where these organisms thrive and explain why?
(i) Name any two causative organisms responsible for ringworm.
(ii) State any two symptoms of the disease.

(a)Name the infective stage of Plasmodium which Anopheles mosquito take along with the blood meal from an infected human.
(b)Why does the infection cause fever in humans?
(c)Give a flow chart of the part of the life-cycle of this parasite passed in the insect.