【简答题】植物的配子细胞为( )倍体,孢子细胞为( )倍体细胞,而被子植物双受精后形成的胚乳是( )倍体细胞。
【简答题】Advice From Grandad Dear James, I have just returned from a long bike ride and now I am sitting under the big tree at the end of the garden. It seems amazing that at my age I am still fit enough to cy...
【简答题】I never called Leo___1____ . At first, he was no one ___2____in my life. Later on, he became my friend and part of the family. When I was eleven years old, Leo ____3___ my mother. We put down roots in...
【简答题】阅读理解。 As a teacher, I think it is right to tell my students to write about their pure feelings and real experiences. I always taught my students how to learn by experience. And I also found that it he...
【简答题】植物的配子细胞为______倍体,孢子体细胞为______倍体,而被子植物双受精后形成的胚乳为______倍体细胞。
【简答题】植物的配子细胞为 ( ) 倍体,孢子细胞为 ( ) 倍体细胞,而被子植物双受精后形成的胚乳是 ( ) 倍体细胞。