
被子植物の配偶子形成と受精
Quiz
•
Biology
•
12th Grade
•
Hard
こういち うしお
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
おしべのやくの中では,花粉母細胞(2n)が減数分裂を行って4個の細胞からなる〔1 〕(n)ができる。
花粉の形成
花粉四分子
2.
OPEN ENDED QUESTION
3 mins • 1 pt
花粉四分子の細胞は離れてそれぞれが〔2 〕(n)になる。
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
それぞれの細胞は分裂して,細胞質の少ない雄原細胞(n)と細胞質の多い〔3 〕(n)が生じる。
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
めしべの子房の中の胚珠では,〔4 〕(2n)が減数分裂を行って4個の娘細胞(n)が生じる。
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
4個の娘細胞のうち,3個は退化し,1個のみが〔5 〕(n)として残る。
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
胚のう細胞(n)の核は連続して〔6 〕回分裂し,8個の核をもつ〔7 〕となる。
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
1個は卵細胞の核,2個は〔8 〕の核,3個は〔9 〕の核,2個は中央細胞の〔10 〕。
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