most important topic of biology class 12th in 2025 7 most important topic of biology class 12th in 2025 byDigital Knowledge -October 29, 2024 topic no.1 जिनिया एवं मेटाजिनिया (Xenia and metaxenia) जीनियस शब्द क प्रयोग फोक (Foeke,1981) …
