
初二第六章植物的一生网测

Quiz
•
Science
•
1st Grade - University
•
Medium
陈淑娟Tan Kuan
Used 599+ times
FREE Resource
30 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
种子的胚包括( )
胚芽、胚轴、胚根、子叶
胚芽、胚轴、胚根、种皮
胚芽、胚轴、胚根、胚乳
胚芽、胚根、子叶、胚乳
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
种子萌发必须要的外界条件是( )
充足的水分和空气
阳光、二氧化碳和水
氧气、水分和阳光
适宜的温度、氧气和水分
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列有关种子萌发的说法,正确的是( )
种子萌发时最先伸长的并突出种皮的是胚根
只要外界的条件适宜,种子都能萌发
种子萌发时子叶、胚乳都留在土中
幼苗的叶子是由种子中的子叶发育而成
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
根不断长长的原因是( )
分生区和伸长区细胞分裂
分生区细胞分裂和伸长区细胞的长长
分生区和伸长区细胞长长
分生区细胞的长长和伸长区细胞分裂
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
花的主要功能是( )
供人观赏
吸引昆虫
产生花粉
形成果实和种子
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
精细胞和卵细胞的结合称为( )
传粉
受精
生长
发育
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
在开花前把桃花A去掉雌蕊,桃花B去掉雄蕊,桃花C不作任何处理。将A、B、C花朵分别用透明塑料袋罩上,扎紧袋口,结果是( )。
A不能结果、B能结果,C能结果
A和B都不能结果,C能结果
A和C不能结果,B能结果
A能结果,B和C不能结果
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