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
2023-12-20
36
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 walking or flying. 【M1】_____
Because plants don’t have that ability,
they may somehow hitchhike. Some plant seeds scatter by 【M2】_____
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 【M3】_____
later spits out the seeds somewhere far from its parent tree.
Seeds can thereby be carried thousands 【M4】_____
of miles. It may 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 ready to be 【M5】_____
planted, the surrounding fruit is green, sour, and hard.
When the seeds final mature, the berries turn 【M6】_____
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 【M7】_____
with a conscious intent of attracting birds only when
their seeds were ready to be dispersed away. 【M8】_____
Nor did birds set out with the intent of planting strawberries. Rather, strawberry plants evolved
through natural selection.
The sweeter and reder the final strawberry, the more birds spread its ripe 【M9】_____
seeds;the greener and more sour the young strawberry,
the birds destroyed the seeds by eating 【M10】_____
berries before the 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/3290647.html
相关试题推荐
[originaltext]Becauseofitswidespreadusegeographically,andbecauseoft
[originaltext]Healthexpertssaywashingyourhandsreducesthespreadofvi
Speciesinterdependenceinnatureconfersmanybenefitsonthespeciesinvol
Speciesinterdependenceinnatureconfersmanybenefitsonthespeciesinvol
Infact,theysay,onereasonendangered-specieslegislationhasnotpassedist
Infact,theysay,onereasonendangered-specieslegislationhasnotpassedist
Infact,theysay,onereasonendangered-specieslegislationhasnotpassedist
Thelargestanimalthateverlivedonlandorinwaterstillexists.Noteve
Thelargestanimalthateverlivedonlandorinwaterstillexists.Noteve
Thelargestanimalthateverlivedonlandorinwaterstillexists.Noteve
随机试题
[originaltext]W:Hey,Jake.Areyoureadyforyourtrip?M:Well,notreally.I
Ausefuldefinitionofanairpollutantisacompoundaddeddirectlyorindi
Scientistshavelongbeeninterestedinhowthedeafprocesssignedlanguag
[originaltext]W:ProfessorJohnsonhelpsmesomuchthatI’mthinkingofbuying
Thecentralideaconveyedinthepassageisthat______.[br]Itcanbeinferred
[originaltext]Atfirstglance,JapanastonishesandfascinatestheAmerican
单位工程完工后,施工单位应组织有关人员进行自检。总监理工程师应组织各专业监理工程
某隧道洞内温度变化较大,拱顶下沉采用精密水准仪测量,前视标尺为吊挂在拱顶测点的钢
我国海区的潮汐资源以福建和浙江为最多,潮汐中蕴藏着巨大的能量。潮汐发电是利用海湾
统计机构和统计人员依照统计法规定独立行使职权( )。A.其他机关和社会团体发现
最新回复
(
0
)