Stroma is a alkaline, aqueous fluid which is protein rich and is present within the inner membrane of the chloroplast. The space outside the thylakoid space is called the stroma. The chloroplast DNA chlroplast ribosomes and the thylakoid sytem, starch granules and many proteins are found floating around the stroma.he word chloroplast is derived from the Greek word chloros meaning green and plastes meaning the one who form s. The chloroplasts are cellular organelles of green plants and some eukaryotic organisms. These organelles conduct photosynthesis.