问题 实验题

为探究低浓度NaHSO3溶液水稻光合速率的影响,某研究小组做了如下实验,请完成实验报告并回答下列问题:

(1)实验报告

①.材料用具:乳熟期的温室盆栽,1mmol/LNaHSO3溶液、蒸馏水、喷壶、光合分析测定仪等。

②.实验步骤:

第一步:选取若干_________的水稻植株随机平均分成甲、乙两组,甲组为对照组,乙组为实验组。

第二步:每天傍晚分别将等量的__________、_________喷洒在甲、乙两组的水稻叶片上,次日上午测定光合速率。

③.结果与分析:

实验结果见图1,经分析可以得出的结论是______________。

(2)研究发现NaHSO3增加了叶片内叶绿体形成ATP的能力,推测其作用部位是叶绿体的_____________,进而加快对图2中_______________(填字母A~D)物质的利用。

(3)研究小组利用上述条件设计实验,证明了0.2·μmol/L硫酸甲酯吩嗪(PMS)和1mol/LNaHSO3效应相同,两者共同处理既不存在累加效应,也无抑制效应。请用柱形图绘制出实验结果(实验光照强度为1000·μmol·m-2·s-1)。

答案

(1)②.株型、长势、叶片均一     蒸馏水     1mmol/LNaHSO3溶液     ③.不同光照强度下代浓度NaHSO3溶液可提高水稻光合速率

(2)类囊体       A、B、D

(3)

阅读理解

Paris is the capital of the European nation of France. It is also one of the most beautiful and most famous cities in the world.

Paris is called the City of Light. It is also an international fashion center. What women are wearing in Paris will be worn by women all over the world. Paris is also a famous world center of education. For example, it is where the headquarters of UNESCO, the United Nations Educational, Scientific and Cultural Organization.

The Seine River divides the city into two parts. Thirty-two bridges cross this beautiful river. The oldest and perhaps most well-known is the Pont Neuf, which was built in the sixteenth century.  The Sorbonne, a famous university, stands on the left bank of the river. There are many other famous places in Paris, such as the famous museum, the Louvre, as well as the Notre Dame. However, the most famous building in this city is Eiffel Tower.

Paris is named after a group of people called the Parisii. They built a small village on an island in the middle of the Seine River about two thousand years ago. This island, called the lie de la Cite, is where Notre Dame lies. Today around eight million people live in the Paris area.

小题1:This article mainly tells us about       .

A.the buildings in Paris

B.the general situations of Paris

C.the center of the world

D.the famous buildings along the Seine River小题2:From the passage we may conclude that       .

A.the clothes worn by women in Paris are liked by women all over the world

B.women in Paris sell their clothes all over the world

C.women from all over the world go to Paris and wear their own clothes

D.women from all over the world like to go to Paris to buy clothes小题3:The building of        is the most famous building in Paris.

A.UNESCO

B.the Pont Neuf

C.Eiffel Tower

D.Notre Dame小题4:Which of the following descriptions of Paris is not true according to the text?

A.Paris is the capital of the European nation of France.

B.Paris is called the City of Light.

C.The United Nations Educational, Scientific and Cultural Organization is located in Paris.

D.The most famous building in this city is the famous museum, the Louvre.

单项选择题