A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: A
Solution :
Dracunculus madinensis, a common human parasite occur in subcutaneous tissue, especially of arms, shoulders and legs. Egg-laying female worm takes up its position just below skin in such a part of body which regularly comes in contact with cold water, like hands feet, legs etc. Here, the parasite produces toxic secretions which produce a blister on skin. Soon an ulcer is formed. On coming in contact with water, the ulcer breaks and worm freely projects its uterus and releases tiny coiled embryos in water. Guinea-worm infection causes itchiness, nausea, diarrhoea, vomiting asthma, eosinophilia etc.
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