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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?
a. The projections are trichocysts, released for the self-defense of the paramecium.
b. The projections are pseudopodia, released for the locomotion of the paramecium.
c. The projections are cilia, released for the locomotion of the paramecium.
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.
Answer is a. he projections are trichocysts, released for the self-defense of the Paramecium.
When Paramecium is stimulated by chemicals such as picric acid or an injurious enemy, it responds by throwing out transparent spine-like projections called trichocysts. The discharge of trichocysts forms an effective barrier round the animal and protects it from acid or enemy.
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