When a student adds a few drops of diluted picric acid to a paramecium slide, he observes that the paramecium releases some transparent spine-like projections to protect its body from the acid. what is the significance of these projections?

The projections that are released to protect its body from the acid are trichocysts. These trichocysts are released for the self-defense of the paramecium.

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The correct answer is - trichocysts

Explanation:

The picric acid is a organic compound that tastes bitter and explosive in nature. When its dilute solution is added to the Paramecium, it reacts against the picric acid by releasing transparent spine-like projections called trichocysts for its self-defence.

Trichocysts form a barrier around body of the Paramecium to protect its body from the picric acid.

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