题干

如图所示植物个体发育不同时期的结构层次,请据图分析回答下列问题:

(1)戊由细胞甲发育而来,甲细胞的名称叫做____ .

(2)图甲通过细胞的____形成图乙,细胞内最重要的变化是____数量先加倍,后平均分配到两个子细胞中;遗传物质的载体是由____ 和____两种物质组成的.

(3)乙通过细胞的____形成丙,其中所示的几种结构在结构层次上叫作____ ,A属于____,作用是____ .

(4)从植物体的结构层次来看,图丁所示的六种结构属于____ .

(5)写出上图植物体由小到大的结构体层次____ (可用箭头表示).与动物体的结构层次相比,此植物体没有____

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答案(点此获取答案解析)

\u53d7\u7cbe\u5375,\u5206\u88c2,\u67d3\u8272\u4f53,DAN,\u86cb\u767d\u8d28,\u5206\u5316,\u7ec4\u7ec7,\u8f93\u5bfc\u7ec4\u7ec7,\u8fd0\u8f93\u8425\u517b\u7269\u8d28,\u5668\u5b98,\u7ec6\u80de\u2192\u7ec4\u7ec7\u2192\u5668\u5b98\u2192\u4e

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    My wife Pat and I were having drinks outside our home, The weather was unusually1for March in Mississippi, There was barely any breeze, After we finished the second cup, flashes of2danced across the sky. When the first drops of rain drove us3 the phone rang.Pat's face4on that gray and hot day. It was our son, David, a helicopter pilot who5in the US Air Force in South Korea. David intended to sound6but we recognized the sign of homesickness from his voice7the power of conversation made us feel8until a crash shook the windows.

    David wondered what it was,“Just thunder,”Pat said.

    There were several seconds of silence,“David”,I asked, “are yo9there?”

    “Yes…apart from the two of you, do you know what else I10most? Thunder, We have rain, wind, and11here, but it never thunders, Remember? Dad, when I was a kid, you laughed me out of fear of thunder? I wish I were there to12with you now.”

    “Yes…”I said, trying to13my tears, On hanging up the phone, I told Pat,“I'm going to record our son some 14”“Bob, the neighbors will think you're crazy.”

    “David won't,” I said and went outside with a recorder, Later I15the tape to David with a single line:A16gift.

    David called again, “Dad,”he said,“you won't believe that some friends and I had a thunder party where we realized we were listening to the sounds of 17 Thanks, Dad! It was really a special present,” While David was in Korea, we found ourselves 18thunderstorms.19feeling blue, we regarded the thunder as special which let us know that wherever we might be, we were 20together as a family.