railway RRB Group D Mock Test Series 2024-25 General Science Biology Biology in Everyday life

ପଞ୍ଚ ବର୍ଗ ବର୍ଗୀକରଣ ପ୍ରସ୍ତାବ କିଏ ଦେଇଥିଲେ ?

1
କାର୍ଲ ୱୋଇସ୍
2
ଆର. ଏଚ. ହ୍ୱିଟେକର 
3
ଆରିଷ୍ଟୋଟଲ୍
4
ଜନ୍ ରେ
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