
【名词&注释】
孤雌生殖(parthenogenesis)、天南星科(araceae)、色彩鲜艳(in gay colour)、顶端优势(apical dominance)、无性生殖(asexual reproduction)、柑橘类植物(citrus plant)
[单选题]移栽菜苗时,一般将根除掉一截,目的是除掉顶端优势,促进侧根的发生。( )
A. 正确
B. 错误
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举一反三:
[单选题]天南星科(Araceae)植物的佛焰苞均色彩鲜艳。( )
A. 正确
B. 错误
[单选题]Would you mind not picking the flowers in the garden? They are__ everyone's enjoyment.
A. in
B. at
C. for
D. to
[单选题]
A. injure
B. bother
C. attack
D. destroy
[单选题]
A. Remember
B. Predict
C. Bear
D. Imagine
[单选题]柑橘类植物(citrus plant)可由珠心、珠被等处的细胞发育成胚,这种现象称为( )。
A. 孤雌生殖
B. 无配子生殖
C. 无孢子生殖
D. 无性生殖(asexual reproduction)
[单选题]
B. newer
C. earlier
D. higher
A. easierB. newer
B. earlier
C. higher
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