The characteristic of life that is exhibited by an algal cell moving toward light is ability to respond (option D).
Living things are animate things i.e. something that lives, as opposed to being inanimate or dead.
Living things are characterized by certain processes that distinguishes them from their non-living counterparts.
These characteristics are as follows:
According to this question, an algal cell is said to move towards light. This shows that the algal cell is exhibiting irritability as a characteristic of life i.e. the cell is responding to light stimulus.
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