問題詳情

14. The characteristics or structures only found in angiosperms but NOT in gymnosperms include _____. ① double fertilization ② flower ③ vessel element ④ sieve tube ⑤ annual growth habit
(A) ①②③④⑤
(B) ①②④⑤
(C) ①②③⑤
(D) ①②③④
(E) ②③④

參考答案

答案:B

統計:A:1,B:2,C:0,D:1,E:0

難度:計算中