9th Class Science Why do we fall Ill? Question Bank 9th CBSE Science Why do we fall Ill?

  • question_answer
      What do you mean by disease symptoms? Explain giving two examples?

    Answer:

                      When the functioning or the appearance of one or more systems of the body will change for the worse, it gives certain abnormal signs of the disease. These visual changes in human beings are called symptoms. Symptoms give indication of the presence of a particular disease. Examples: (i) Cough is the symptom of lung infection. (ii) Lesions on the skin are the symptoms of chicken pox.


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