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The true statements are:
3. Chloroplasts are likely descendants of photosynthetic bacteria.
5. Chloroplasts likely have an endosymbiotic origin.
1 is false because chloroplasts aren't living organisims but organelles.
2 is incorrect because chloroplasts aren't cyanobacteria anymore, even though they have evolved from them.
4 is incorrect because for example, cyanobacteria haven't got chloroplasts, and they are able of doing photosynthesis.