Shin aikin masanin ilimin halittu na Rasha ya biyo baya? Bisa ga tambayar da ta gabata, ka rubuta mahallin da ke ɗauke da amsar. Zai iya zama jumla 1 - 20. Abubuwan da ke ciki:
Chloroplasts suna daya daga cikin nau'ikan kwayoyin halitta a cikin kwayar tsire-tsire. An yi la'akari da cewa sun samo asali ne daga cyanobacteria ta hanyar endosymbiosis lokacin da kwayar eukaryotic ta mamaye cyanobacterium mai daukar hoto wanda ya zama mazaunin dindindin a cikin tantanin halitta. Mitochondria ana tunanin sun fito ne daga irin wannan taron, inda aka haɗiye prokaryote na iska. Wannan asalin chloroplasts ne ya fara ba da shawarar masanin kimiyyar halittu na Rasha Konstantin Mereschkowski a cikin 1905 bayan Andreas Schimper ya lura a cikin 1883 cewa chloroplasts suna kama da cyanobacteria. Ana samun chloroplasts ne kawai a cikin tsire-tsire da algae.