首页
登录
职称英语
Like all animal species, plant species must spread their offspring to suitabl
Like all animal species, plant species must spread their offspring to suitabl
游客
2023-12-15
29
管理
问题
Like all animal species, plant species must spread their offspring to suitable areas
where they can grow and pass on their parent’s genes. Young animals generally spread by 【M1】______
walking or flying. Because plants don’t have that ability, they may somehow hitchhike. 【M2】______
Some plant seeds scatter by blowing in the wind or floating on water. Many other plant
species, though, trick an animal into carrying their seeds. How do they do? They enclose
them within a tasty fruit and advertise the fruit’ s ripeness by its color or smell. The hungry
animal collects and swallows the fruit, walks or flies off, but later spits out the seeds some-【M3】______
where far from its parent tree. Seeds can thereby be carried thousands of mi]es. It may 【M4】______
surprise you to learn that plant seeds can resist digestion. In fact, some seeds actually
require passage through an animal’ s body before they can grow. Wild strawberries offer a
good example of hitchhiking tactic. When strawberry seeds are still young and not yet 【M5】______
ready to be planted, the surrounding fruit is green, sour, and hard. When the seeds final 【M6】______
mature, the berries turn red, sweet, and tender. The change in the berries’ color serves as a
signal to birds which then eat the strawberries, fly off, and eventually spit out the seeds.
Naturally, strawberry plants doesn’t set out with a conscious intent of attracting birds only 【M7】______
when their seeds were ready to be dispersed away. Nor did birds set out with the intent of 【M8】______
planting strawberries. Rather, strawberry plants evolved through natural selection. The
sweeter and ruder the final strawberry, the more birds spread its ripe seeds; the greener and 【M9】______
more sour the young strawberry, the birds destroyed the seeds by eating berries before the 【M10】______
seeds were ready. [br] 【M3】
选项
答案
but改成and。
解析
逻辑错误,此处不存在转折。
转载请注明原文地址:https://tihaiku.com/zcyy/3276628.html
相关试题推荐
ThebestknownAustraliananimalis______.A、bearB、kangarooC、hareD、elephantB
Skeletalremainswithanimalbonebladestiedtothefeettestifytoskating’s
Skeletalremainswithanimalbonebladestiedtothefeettestifytoskating’s
Likeallanimalspecies,plantspeciesmustspreadtheiroffspringtosuitabl
Likeallanimalspecies,plantspeciesmustspreadtheiroffspringtosuitabl
Likeallanimalspecies,plantspeciesmustspreadtheiroffspringtosuitabl
Vibrationsinthegroundareapoorlyunderstoodbutprobablywidespreadmeans
Vibrationsinthegroundareapoorlyunderstoodbutprobablywidespreadmeans
Vibrationsinthegroundareapoorlyunderstoodbutprobablywidespreadmeans
Vibrationsinthegroundareapoorlyunderstoodbutprobablywidespreadmeans
随机试题
Occasionalself-medicationhasalwaysbeenpartofnormalliving.Themaking
简述生产力对教育发展的制约作用
胃次全切除的病人引起贫血与下列哪些因素有关A.Fe B.维生素B C.维生素
可以使气管偏向患侧的疾病是A.气胸 B.一侧肺不张 C.一侧甲状腺肿大 D
能引起亚急性硬化性全脑炎的病毒是A.柯萨奇病毒B.麻疹病毒C.狂犬病病毒D.EC
低辐射膜玻璃又称"Low-E"玻璃。该种玻璃对于可见光有较高的( )。 A、
综合布线系统的对绞线缆布线以不低于( )的比例进行随机抽样检测。 A、5%
()是指国家通过提高农副产品的收购价格,降低农用生产资料的销售价格来支援农业
(2016年真题)A公司和B公司均要在金融市场上借入1000万美元的资金,期限都
关于投标总价,下列说法错误的是()。A、应当与组成招标工程量清单的分部分项工程
最新回复
(
0
)