正确答案: B

错误

题目：根系有两种类型，直根系是由主根发育而来，须根系是由侧根发育而来。( )

解析：解析：将“须根系是由侧根发育而来”改为“须根系无明显主根和侧根区分，或根系全部由不定根和它的分枝组成”。

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举一反三的答案和解析：

[单选题]

realize

[单选题]花单性是进行异花传粉的必要条件。( )

错误

[单选题]Just use this room for the time being, and we’ll offer you a larger one ____it becomes available.

as soon as

[单选题]CPlants can’t communicate by moving or making sounds, as most animals do. Instead, plants produce volatile compounds, chemicals that easily change from a liquid to a gas. A flower’s sweet smell, for example, comes from volatile compounds that the plant produces to attract insects such as bugs and bees.

producing some chemicals D． sending out electronic signals

[单选题]关于运动有几种看法：甲说：“太阳每天都是新的”；乙说：“方生方死，方死方生”；丙说：“飞鸟之景未尝动也”。这些观点按照顺序分别是

辩证法 、相对主义、形而上学 B．二元论、形而上学、辩证法

[单选题]水稻和小麦等禾本科植物拔节、抽穗时，茎迅速长高，是借助( )的活动。

居间分生组织

[单选题]哪种药物易透入角膜（ ）。

既能溶于水又能溶于油的药物