A drop of dilute ammonium Hydroxide (NH4OH) is placed on one slide containing a large number of swimming paramecium. Under this condition, which of these behaviors of the paramecia will be observed?

a. They will eventually all swim toward the ammonium hydroxide
b. They will show no net change in behavior to the ammonium hydroxide
c. The will be instantly killed by the ammonium hydroxide
d. They will eventually all swim away from the ammonium hydroxide


Answer : D. They will eventually all swim away from the ammonium hydroxide

Anatomy & Physiology

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