题干

拟南芥P基因的突变体表现为花发育异常。用生长素极性运输抑制剂处理正常拟南芥,也会造成相似的现象。下列推测错误的是(   )

A:生长素与花的发育有关

B:生长素极性运输与花的发育有关

C:P基因可能与生长素极性运输有关

D:生长素极性运输抑制剂诱发了P基因突变

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答案(点此获取答案解析)

C

同类题4

阅读下面材料,根据材料内容完成后面表格,每空填一个单词。

    Sometimes it may seem difficult to improve our health. If so, the following health habits may help you.

    Eat breakfast every morning

    Research(研究) shows that if you eat a meal in the morning, you may not become too fat or eat too much during lunch. Eating breakfast can help people feel better through the day.

    Get enough sleep

    Poor sleep can influence(影响) our memory and learning. It can also cause traffic accidents! Studies show that people who don't get enough sleep seem to get into more accidents. So stay safe and get enough sleep!

    Take a walk every day

    Walking is an easy way of exercising. You'd better meet friends for a walk, not for a meal. As you walk, you will see the beautiful world around you. Once you try, you'll find that adding a walk into your daily life is very easy.

    Join social groups

    Social groups can provide support. They might include sport teams, art or music groups. The people in the group can offer advice and can help each other in difficult times. Also, being in a group keeps your mind busy. And active mind is a healthy mind.

    Have a hobby

    A hobby could be running, reading or making something with your hands. Hobbies help people to relax and rest. Hobbies bring us joy, too.

Title:  Ways to ____ our health

Eat breakfast every

morning

◆Breakfast stops you from eating too much during lunch.

◆It can help you feel better ____ the day.

Get ____ sleep

◆Poor sleep influences your memory and learning.

◆It may ____ traffic accidents

Take a walk every day

◆Walking is an easy way of ____. You'd better meet friends for a walk ____ of a meal.

◆Enjoy the ____ world around you while walking.

Join social groups

◆You can get much support, ____ and help from social groups.

◆Being in a group keeps your____ busy.

Have a hobby

◆Different hobbies can help you relax and rest.

◆Hobbies bring us joy ____ well.