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七年级第一单元综合测试题

七年级第一单元综合测试题
七年级第一单元综合测试题

第一单元综合测试题

基础知识部分

一、你会选吗

1.古人云:“橘生淮南则为橘,橘生淮北则为枳。”就是说,淮南的橘子移种到淮北就不甜美了。想一想,产生这一差异的主要因素是( )

A.土壤B.空气C.温度D.阳光

2.(2004·泰安中考)近年来,沙尘暴仍然频繁在我国北方发生,严重干扰和危害了人们正常的生产生活。引起沙尘暴的主要原因是破坏了生态平衡。( )

A.人类盲目地开发森林和草原B.北方地区降水量低,常年干旱

C.环境污染导致植被大量死亡D.野生动物的种类和数量锐减

3.下图是两棵植物,你认为A植物分布在什么环境里( )

A.干旱地B.湿润地区C.寒冷地区D.温暖地区

4.在农田生态系统中,生产者是指( )

A.农民B.农作物C.耕地D.耕牛

5.某高山植物沿高山分布:从山脚到山顶依次为热带雨林、常绿阔叶林、温带针叶林、高山草甸。决定这种分布的主要生态因素是( )

A.阳光B.水分C.温度D.海拔高度

6.在下列生态系统中,自然调节能力最大的是( )

A.温带草原B.热带雨林C.北方针叶林D.南方阔叶林

7.“千里之堤,溃于蚁穴”说明

A.生物适应环境B.生物对环境产生影响C.环境影响生物D.环境适应生物

8.下列属于生物的是( )

①草②煮熟的鱼③珊瑚④钟乳石⑤冬眠的蛇⑥恐龙化石⑦蘑菇⑧家鸽

A.①⑤⑦⑧B.①③④⑧

C.②③④⑥D.②⑤⑥⑦

9.一个池塘被农药污染,在池塘中有一个食物链:浮游植物一水蚤一鱼一鱼鹰,则体内农药含量最多的生物是( )

A.浮游生物B.水蚤C.鱼D.鱼鹰

10.在下列各项中,与动物捕食有相同生理功能的是( )

A.植物的光合作用B.排除体内的废物

C.给汽车加油D.树苗长大

11.不借助任何工具,可以生活在生物圈的任何圈层的生物是( )

A.哺乳类动物B.人类C.鱼类D.细菌类

12.下列现象中,不是主要由人类活动引起的是( )

A.酸雨B.竹子开花C.温室效应D.水土流失

13.下列现象中,不是生物对环境的适应的是( )

A.北极熊白色的体毛B.鱼的体型为梭型

C.牦牛的绒很保暖D.孔雀开屏

14.下列不属于一个生态系统的是( )

A.一片森林B.海洋生态系统C.森林里所有的动物D.一块草地

15.在一个池塘里,鲫鱼能吃水草,又能吃螺蛳等小生物,草鱼吃水草,乌鱼会吃鲫鱼、草鱼苗。下面所写的,能反应池塘中的食物链的是( )

A.水草→鲫鱼→乌鱼B.水草←草鱼←乌鱼

C.螺蛳←鲫鱼←乌鱼D.螺蛳→鲫鱼→乌鱼

16.在培养蘑菇的培养基上发现长出了霉菌,蘑菇和霉菌的关系是( )

A.互利共生B.种内斗争C.竞争关系D.寄生关系

17.在一个草原生态系统中,最多的生物是( )

A.狼B.禾本科植物C.羊D.老鼠

18.对生物的生存来说,不是它生长的基本条件的是( )

A.空间B.温度C.营养D.时间

19.在生态系统中,如果没有分解者,那么( )

A.动物和植物将会越来越繁盛B.动物和植物的遗体残骸就会堆积成山

C.生态系统将会越来越大D.生态系统依旧能够维持

20.蛇为变温动物,也就是体温随着外界的温度而改变,故推测其较不适合生活于何种生活环境( )

A.热带雨林B.亚热带森林C.温带草原D.寒带冻原

21.下列哪种现象不是生命现象

A.夏季炎热,人出汗了B.铁在潮湿环境中生锈了

C.秋季植物落叶了D.用手触摸含羞草,展开的叶片会合拢22.下列生物不是由细胞构成的是

A.人B.杨树C.蘑菇D.艾滋病病毒23.一般卧室里不能摆放过多的植物过夜,这是因为

A.植物的生长需要营养B.植物要生长

C.植物会释放过多的氧气D.植物要呼吸会产生二氧化碳

24.荒漠地区动植物种类稀少,是因为那儿缺少

A.水B.温度C.阳光D.空气

25.稻田里的杂草和水稻争夺阳光、养料和水分,体现了生物与生物之间有A.捕食关系B.合作关系C.竞争关系D.分工关系

26.有些动物如青蛙在冬天要进行冬眠,这是

A.环境影响生物 B. 生物适应环境

C.生物影响环境D.生物躲避敌害

27.在海面150米以下的水层中,几乎找不到藻类植物,其主要的环境因素是

A.光B.温度C.水D.空气

28.下列叙述中,错误的是

A.生物的生存是依赖于一定的环境的

B.生物在生存发展中不断适应环境

C.生物也影响和改变着环境

D.生物与环境是有关系的,生物的生存是受环境主宰的

29.一个完整的生态系统包括

A.生产者和消费者B.生物部分和非生物部分

C.食物链和食物网D.全部生产者、消费者和分解者

30.蚯蚓一般营穴居生活,但夏季雨后蚯蚓在地面上活动,原因是

A.土壤中蚯蚓缺乏食物 B. 蚯蚓得不到足够的氧气

C.喜欢雨后晒太阳D.承受不了土壤的压力

二、你会填吗

1.高山上的空气,温度,不适合生物的生存。

2.在生态系统中的物质和就是沿着食物链和食物网流动的。

3.地球给生物提供了生存的基本条件有、、、等。

4.食物链的开始总是,即食物链是从开始的,食物链不包括生态系统中的。

5.农田生态系统中的生物因素有,非生物因素有。

6. 除病毒以外,生物都是由_ ______构成的。

7.地球上所有的生物共有一个家,这就是_________。它包括_______、______和_______。

8.大气圈的空气主要由多种气体组成,如氮气、______、______等。在大气圈中生活的生物,主要是能够飞翔的__ ____和___ ____,还有细菌等微小生物。

9.骆驼和骆驼刺等沙漠动、植物表现出对_______的适应。海豹的皮下脂肪是对______的适应,而旗形树的树冠是对____ ___的适应。

10.生态系统中的____ ___和___ ___是沿着___ __和_____ _流动的。

11. 在城市生态系统中________起重要的支配作用。植物的种类和数量少。消费者是________, 而不是野生动物。

三、下图是某生态系统的食物网,请根据图回答:

(1)该食物网中共有食物链。其中最长的一条是。(2)该生态系统中,草属于,兔、狐等属于,还有肉眼看不到的细菌、真菌等属于,除此之外生态系统的组成还包括图中没有表示出来的。

(3)该食物网中,数量最多的生物是,数量最少的是。

(4)如果将狐、鹰等肉食动物大量捕杀,兔的数量将会出现什么样的变化?

四、下面这段文字节选自鲁迅先生的《从百草园.到三昧书屋》,阅读后回答问题

不必说碧绿的菜畦,光滑的石井栏,高大的皂荚树,紫红的桑椹;也不必说鸣蝉在树叶里长吟,肥胖的黄蜂伏在菜花上,轻捷的叫天子(云雀)忽然从草间直窜向云霄里去了。单是周围短短的泥墙根一带,就有无限趣味。油蛉在这里低唱,蟋蟀在这里弹琴。

1.请列举出文中所描述的生物名。_____________________________________.

2.请说明判断依据。___________________________________________________.

3.在百草园中影响蟋蟀生存的因素有生物因素和——因素。其中前者包括,后者包括。

4.蟋蟀要生存就不能离开草丛和土地,这说明生物必须依赖而生存。

六、设计实验

修正液是同学们常用的一种文具,打开盖后,有刺激性的气味。我们不禁要问:修正液对人体有伤害吗?请你设计一个实验,对这个问题进行探讨。

(实验材料:修正液小白鼠6只老鼠的食物——米饭可关小白鼠的笼子)

提出问题:

作出假设:

设计方案:

你觉得可能出现的现象:

你的结论是:

基础知识部分

一、1.C

2.A

3.A(提示:A植物叶片面积小,可以有效减少体内水分蒸发;根系发达,有利于吸收土壤深处的水分。因此A植物适宜分布在干旱地区。)

4.B 5.C(提示:从山脚到山顶的这种分层现象主要是温度差异造成的。)

6.B(提示:—般来说,结构和功能比较复杂的生态系统抵抗外界干扰的能力较强,比较稳定。以上的生态系统中,热带雨林中的生物种类最多,结构最复杂。)

7.B

8.A(提示:依据生物的基本特征进行判断。)

9.D(提示:生物富集作用的特点是消费者的等级越高,体内的积累量就越多。)

10.A(提示:动物捕食、植物光合作用均将外界环境中的物质摄人生物体内,而排出体内废物则是将生物体内的物质排到外界环境中,树苗长大属于生长发育。)

11.D(提示:哺乳类(包括人)多生活在岩石圈,鱼类多生活在水圈。人类的活动需要借

助一些工具才可以到达生物圈的各个圈层。)

12.B

13.D(提示:孔雀开屏是雄性个体的求偶行为,不属于适应性。)

14.C(提示:生态系统指在一定地域内生物与环境所形成的统一的整体,包括生物部分和非生物部分。)

15.A(提示:食物链指生产者与消费者,消费者与消费者之间的捕食与被捕食的关系。

D、C中的箭头指向错误,D中缺少生产者,因此错误。)

16.C(提示:蘑菇和霉菌是两种生物,都要利用培养基上的养料,因此属于竞争关系。)

17.也(提示:生态系统中生产者的数量最多。选项中只有禾本科植物是生产者,其余均是消费者。)

18.D(提示:生物生存的基本条件是营养物质、阳光、空气、水,还有适宜的温度和一定的生存空间。)

19.B(提示:分解者是营腐生的细菌和真菌。在生态系统中如果没有分解者,那么生产者和消费者的遗体、遗物不能被分解产生无机物重新回到无机环境中,最终会导致生态系统的崩溃。)

20.D(提示:蛇是变温动物,如果在温度很低的寒带冻原,蛇的体温过低,生命活动就会停止。)

二、1.稀薄低

3.阳光水空气营养物质

4.植物生产者分解者

5.水稻、杂草、昆虫等阳光、空气、土壤等

三、1.×

2.×(提示:生物除了植物和动物外,还包括真菌(如蘑菇)、原生生物(如草履虫)、原核生物(如细菌),还有病毒。)

3.×(提示:分解生物遗体的生物是细菌和真菌,营腐生生活,在生态系统中扮演着分解者的角色。)

4.×(提示:同种生物之间既有种内互助,也有种内斗争。)

5.√

6.√

7.×(提示:生态系统具有一定的自动调节能力,但这种调节能力有一定限度。如果外界干扰超过了这个限度,生态系统就会遭到破坏。)

8.√

二、1.菜、皂荚树、桑树、蝉、黄蜂、云雀、油蛉、蟋蟀

2.它们都具有生物的一些基本特征,比如能够生长、繁殖、都需要营养等等。

3.非生物竞争关系、共生关系、捕食关系阳光、空气、水、温度等

4.环境(提示:本题综合考查了生物的基本特征、环境对生物的影响等知识。)

三、提出问题:修正液会对动物有伤害吗?作出假设:修正液会对动物有伤害(或修正液对动物没有伤害)。设计方案:①取食物两份,其中一份拌有修正液,一份没有拌修正液,分别放人两个笼子中;②将6只小白鼠分成两组,每组3只,分别放人以上的两个笼子中;③观察6只老鼠进食的情况;④如果不吃,可以强行将食物喂给小白鼠;(其他的方案也可) 你觉得可能出现的现象:①吃了拌修正液的食物的小白鼠出现类似中毒的症状,而吃没有拌修正液的食物的小白鼠正常;②另一种可能是小白鼠均没有出现异常。你的结论是:如出现第一种情况:说明修正液对动物有伤害。如出现第二种情况:说明修正液对动物没有伤害。(提示:本题是一次较完整的探究过程,在实验设计中,请注意恰当控制变量,合理设置对照。修正液中含挥发性的有毒溶剂三氯乙烯,希望同学们尽量不使用,以免对身体造成毒害。)

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