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八年级练习

八年级练习
八年级练习

鄄城育才实验学校2017-2018学年上学期 第二次月考八年级试生物试题 (满分:50分) 一、选择题:本大题包括20小题,每小题1分,共20分。在每小题所列的四个选项中,只有一项是最符合题意的,多选、不选、错选均不得分。请将正确答案的代号(ABCD )填写在试卷最后一页的“答题栏”内。 1“满筐圆实骊珠滑,入口甘香冰玉寒”,葡萄中含有的丰富营养物质贮存在果实的( )A .果皮 B .种皮 C .种子 D .胚 2我们吃花生时,剥去的最外的硬壳、捻去的红颜色皮、暴露出来的两个白颜色瓣分别是由( )发育而来的.A .子房壁、珠被、受精卵B .外果皮、内果皮、子叶 C .果皮、种皮、胚乳 D .果皮、种皮、子叶 3.玉米种子、菜豆种子中,与鸟卵的卵黄功能相似的结构分别是( ) A .胚乳、子叶 B .胚乳、胚 C .胚、子叶 D .子叶、胚乳 4.2015年7月植物“克隆工厂”惊艳亮相寿光菜博会,克隆通俗地讲就是无性生殖.以下植物的繁殖方式不属于克隆的是( ) A .葡萄用扦插的方法繁殖 B .桂花用压条的方法繁殖 C .苹果用嫁接的方法繁殖 D .花生用种子繁殖 5.红花刺槐因其花色鲜艳、观赏价值高而成为我市城乡绿化新树种,其繁殖方法一般采用白花刺槐做砧木嫁接而成.下列有关嫁接的说法不正确的是( ) A .属于无性生殖B .嫁接时要使用砧木和接穗的形成层紧密结合 C .只保持砧木的优良性状D .能够加快繁殖速度 6.如图表示某种蝶类发育过程中的四个阶段,下列判断不正确的是( ) A .甲是卵 B .乙是成虫 C .丙是若虫 D .丁是幼虫 7.如图是对几种动物的相同点进行比较归纳(圆圈交叉部分为相同点),下列叙述正确的是( ) A .Ⅰ是真正的陆生脊椎动物B .Ⅱ是有性生殖,体内受精,卵生 C .Ⅲ是有辅助呼吸器官的生物D .Ⅳ是完全变态发育 8.以红果毛皮桃为接穗,以黄果毛皮挑为砧木,接穗上结出的毛皮桃色是( ) A .红果皮 B .黄果皮C .半边红果皮,半边黄果皮 D .不一定

9.人的新生命开始于()

A.婴儿出生 B.精子形成 C.受精卵形成D.卵细胞形成

10.下列属于生殖细胞的是()

①精子②卵细胞③受精卵④卵巢⑤睾丸.

A.①②B.③④C.②⑤D.②④

11.世上最伟大的是母亲,是她孕育了新的生命.她为胎儿提供营养通过()A.卵巢 B.子宫 C.输卵管D.胎盘

12.青蛙不能成为真正的陆生动物的原因是()

A.体温不恒定B.生殖离不开水 C.皮肤辅助呼吸 D.变态发育

13.青春期是人一生中的黄金期,人的身体和心理都会发生显著的变化,下列有关青春期的叙述正确的是()

A.开始出现第一性征B.生殖器官的生长发育几乎停滞

C.身高突增,代谢速度缓慢D.男女相处有礼有节,建立真诚的友谊

14.下列有关人类生殖和发育的叙述,错误的是()

A.睾丸和卵巢是产生生殖细胞的器官B.受精卵形成的场所是输卵管

C.着床是指受精卵植入子宫内膜的过程D.哺乳有利于婴儿的健康发育,母乳中含有抵抗传染病的多种抗体

15.下列属于相对性状的是()

A兔的白毛和白毛B.兔的白毛和黑毛C.兔的白毛和长毛 D.兔的白毛和猫的白毛16.通过DNA检测可以确定被拐卖儿童与父母的亲子关系.因为DNA是()A构成细胞的基本物质B遗传物质的载体C控制性状的基本单位D.主要的遗传物质17.下列关于生物性状的表述,错误的是()

A.每个生物体都会有许多种不同的性状B.人们总是通过性状来区分出不同的生物C.生物的性状都是肉眼可以观察到的特征D.生物的亲缘关系越近,它们之间相似的性状就越多

18.孟德尔用纯种圆粒豌豆与纯种皱粒豌豆杂交,子一代种子都是圆粒,将子一代种下去后自花传粉,获得二代种子,下列分析不正确的是()

A.圆粒和皱粒性状是由基因控制B.圆粒相对于皱粒是显性性状

C.亲代控制皱粒的基因没有传递给子一代D.子二代种子中有圆粒和皱粒

19.下列现象不属于遗传的是()

A种瓜得瓜种豆得豆B子女和父母相像C母女俩的发型相同D母亲是色盲,儿子是色盲

20.下列关于基因的描述正确的是()

①DNA上的任何一个片段都可成为基因

②若一对基因为Dd,则D和d分别位于一对染色体上

③每条染色体上都含有一个DNA分子,每个分子都含有一个基因

④基因只存在于生殖细胞中

⑤生物体的某一性状往往由一个基因控制

⑥DNA分子是双螺旋结构.

A.②⑥B.①②C.③④D.④⑥

二、非选择题:没处1分,共30分,请将答案书写在最后一页指定的区域内。21.你想过“养棵小树做宠物”吗?近年来,某市园林局号召市民开展了“树木认养活动”.由园林提供技术指导,认养者负责养护树木.某校师生认养了一片毛白杨树林,把生物课搬进了大自然.

(1)春天来了,毛白杨萌生了许多新枝条,从芽的性质和构造来说,将来发育成枝条的是;其结构中的不断分裂产生新的芽结构.

(2)几个月下来,毛白杨长粗了一圈,这是由于茎中的活动,使树干不断长粗.

(3)“根深方能叶茂”,根尖的使毛白杨的根不断向地下伸长.

(4)养护期间要定期松土施肥,多施含的无机盐,毛白杨枝叶会更加繁茂.

(5)毛白杨的生长需要水,同时也不断地通过蒸腾作用向外界散失水分,蒸腾失水的“门户”是.

(1)本实验有组对照实验,分析该实验可以得出种子萌发所需的环境条件是.

(2)A装置中,有2粒种子没有萌发,可能的原因是.

(3)种子萌发过程中种子内有机物总量的变化是.

23.根据“观察鸟卵的结构”实验,回答问题.(注意:“[]”中填数字,“”上填结构名称)

(1)用解剖剪后端轻轻地将鸡蛋钝端的卵壳打破;用镊子剥去钝端的碎卵壳,再撕破外卵壳膜,即可以看到[ ] ,该结构可贮存空气.然后用解剖剪剪破内卵壳膜,小心地将鸡蛋内的物质倒入培养皿里进行观察.

(2)培养皿里透明胶状物质②内有卵黄.卵黄上有一个白色的小点,是

[ ] ,它是进行胚胎发育的部位.

(3)鸟类的胚胎发育所需要的营养物质主要是从哪里获得的?.(4)人的胚胎发育主要是在母体的子宫内进行的,人的胚胎发育所需要的氧气和养料主要是从哪里获得的?.

24.如图是女性生殖系统结构模式图,据图回答:

(1)女性的主要器官是[ ] ,其功能是产生卵细胞和分泌性雌性激素.(2)卵细胞若在(填字母)处遇到精子,便可完成受精作用形成受精卵.

(3)受精卵不断分裂和,逐渐发育成胚胎,经过大约周后,胎儿发育成熟,从母体的阴道产出,这个过程叫.

(4)胚胎发育的场所是(填字母).

25.某同学了解到他们社区内3个患有白化病家庭的情况(如下表),依据相关政策

(1)1号家庭母亲的基因组成是,2号家庭父亲的基因组成

是,3号家庭第一个孩子的基因组成是.

(2)1号家庭第二个孩子患白化病的可能性为,2号家庭第二个孩子带有白化病基因的可能性为.

(3)某同学从表中的情况总结出母亲患白化病,子女一定会患白化病,你认为(对或错);父母双方都带有白化病基因,子女就可能患白化病,你认为

(对或错).

(4)如果3号家庭再生第二个孩子,患白化病的可能性为;2号家庭第二个孩子的基因组成为,如果他与基因组成为AA的女子结婚,他们的后代中患白化病的可能性为.

参考答案

一.AAADC CCACA DBDCB DCCCA 21. (1)枝芽;生长点;

(2)形成层;

(3)分生区和伸长区;

(4)氮;

(5)气孔;

22.(1)3;适宜的温度、一定的水分、充足的空气;

(2)种子的胚已经死亡或胚不完整;

(3)逐渐减少.

23.(1)③;气室;

(2)①;胚盘;

(3)卵黄;

(4)母体的血液(或胎盘).

24.(1)A卵巢;

(2)B

(3)分化;40;分娩;

(4)C

25.(1)Aa;Aa;aa;

(2)25%;100%;

(3)错;对;

(4)100%;Aa;0.

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( ) 11. Who comes here? A. John B. Jack C. Mike. ( ) 12. Where is Daniel? A. In bed B. At the table. C. At school. ( ) 13. What time do they go to school? A. 7:00 B. 7:15 C. 6:45 ( ) 14. Where is the letter from? A. It ’s from America. B. It ’s from Millie. C. It ’s from Li Lie. ( )15. What are they talking about? A. They are talking about how to visit the museum. B. They are talking about how to spend the Sunday. C. They are talking about how to play tennis 得分阅卷人( D)你将听到一段短文,听完短文后,选择正确答案。(听两遍)( 5 分) ( ( ( ( ( )16. John worked _____________ . A. at a station B. in a food shop C. in a hospital )17. John’s father called John one day because he wanted to ______________ . A. go to the station B. see John C. see a doctor )18. John’s wife gave John ___________ before he left . A. a piece of paper B. some money C. some food )19. John came back home __________________ . A. with his father B. with his wife C. with much food )20. John’s father didn ’tcome back home with John because _______________ . A. John’s father didn ’tgo to the station B. John’s father didn ’twant to trouble John . C.John forgot to go and meet his father at the station 得分阅卷人II.单项选择(15分) ( )21. Can you teach me how _________? A. dance B. dancing C. to dance D. dances ( )22. An ________ boy came to our class yesterday. A. 11-year-old B. 11-years-old C. 11-year old D. 11 years old ( )23. Stop _____ so much noise! My father is sleeping. A. to make B. making C. to hear D. hearing ( )24. — Excuse me, where is the bus stop? — ________________. A. Go straight and turn right. B. That ’s OK.

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5. 一艘巡洋舰用70千米/小时的速度追赶在它前面10千米的一艘战斗舰,巡洋舰追了210千米,恰好赶

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仁爱版八年级下册英语单选专项练习

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