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Biology · 2022 · 3 marks
CBSE 2022 · Region 3 · Set 1 · Q8
A patient complains of suffering from constipation, stomach ache, stool with blood clots and excess mucous. The physician diagnosed it as amoebiasis,…
A patient complains of suffering from constipation, stomach ache, stool with blood clots and excess mucous. The physician diagnosed it as amoebiasis, after stool test.
(a)
Write the scientific name of the microbe identified in the stool sample.
(b)
How do you think, the patient must have contracted it ?
(c)
Write your suggestions to the patient to avoid infection in future.
Marking-scheme solution
(a)
Entamoeba histolytica.
(b)
Through contaminated water / contaminated food
(c)
Consuming clean drinking water, consuming non-contaminated food (vegetables, fruits), taking care of personal hygiene, periodic cleaning and disinfecting of water reserviors (pools, tanks),
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CBSE Class 12 Biology past-paper question from the 2022 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.