Final answer:
Thylakoids are disc-shaped structures found inside chloroplasts in eukaryotic cells. They contain chlorophyll and are involved in the light-dependent reactions of photosynthesis.
Step-by-step explanation:
Thylakoids are disc-shaped structures found inside chloroplasts in eukaryotic cells. They contain chlorophyll, a pigment responsible for capturing light energy during photosynthesis. Thylakoids are involved in the light-dependent reactions of photosynthesis, where they convert light energy into chemical energy.
The statement that is not correct is option d: Thylakoids are part of the endoplasmic reticulum. Thylakoids are not part of the endoplasmic reticulum, they are an internal membrane system specific to chloroplasts.