Answer:
The correct answer will be-chloroplast will regenerate
Explanation:
Euglena is an alga which is kept under the Protista Kingdom. Euglena possesses the photosynthetic organelle called chloroplast due to which Euglena performs the process of photosynthesis.
When the chloroplast of the algae was generated with the chemical like acetate in the labs, then the population of algae became inefficient to perform the photosynthesis.
The experimental studies show that when the chemical was removed from the growing solution and the were re-exposed to the light, the Euglena showed regeneration of the fully developed chloroplast with clear partitions of the thylakoids and chlorophyll pigment within 2-3 days.
Thus, chloroplast regenerated after exposure to light in Euglena.