Question

what is the purpose of using extract from chloroplasts? chloroplasts are the easiest part of the plant to extract. chloroplasts are the only part of the plant that will stick to chromatography paper. chloroplasts contain the photosynthetic pigments.

Explanation:

Chloroplasts are organelles where photosynthesis occurs and they contain photosynthetic pigments like chlorophylls and carotenoids which are often the focus of studies related to photosynthesis. They are not the easiest part to extract, and not the only part that can stick to chromatography paper.

Answer:

Chloroplasts contain the photosynthetic pigments.