脊椎動(dòng)物檢索表

1、脊椎動(dòng)物檢索表,不爽貓,囧臉貓,,蛇,考一考：你對動(dòng)物了解多少？,這是什么動(dòng)物眼中的世界呢？,,魚,,蝙蝠,書本活動(dòng)1,你最喜歡的脊椎動(dòng)物是什么？讓大家來猜一猜。,1、班級(jí)大致分為A、B兩組，每組各請一位同學(xué)，寫下你最喜愛的一種脊椎動(dòng)物，然后請對方組5位同學(xué)向你提10個(gè)問題提問者：以“是否”開頭，如“是否胎生”。 被問者：你只回答“是”或“不是”。2、如果提問組的任意一位同學(xué)猜出了你最喜愛的動(dòng)物的大致種類，則判提問

2、組的同學(xué)獲勝。,游戲規(guī)則：,閱讀書本P64 圖2-42完成P63 表2-5中動(dòng)物的分類，說出分類理由,書本活動(dòng)2,,,二歧分類檢索表,4a幼體生活在水中，用鰓呼吸。成體在水中或上陸生活，用肺呼吸，有四肢·············4b幼體、成體都生活在水中，用鰓呼吸，無四肢，用鰭劃水·

3、83;·································,3,兩棲類,4,魚類,2,練

4、 習(xí) 一,判斷青蛙、貓、雞、蛇、草魚各屬于哪類動(dòng)物，并說明理由。,貓,雞,蛇,青蛙,草魚,全身被毛、胎生、哺乳,體外被羽毛，前肢進(jìn)化成翼,體表有鱗片，卵生陸生,幼體水生用鰓呼吸,成體用肺呼吸,體表鱗片,終生用腮呼吸水生,二歧分類檢索表,這種檢索表把同一類別的生物，根據(jù)一對或幾對相對性狀的區(qū)別，分成相對應(yīng)的兩個(gè)分支。接著，根據(jù)另一對或幾對性狀，把上面的每個(gè)分支再分成相對應(yīng)的兩個(gè)分支，如此逐級(jí)排列下去，直到編制出包括全部生

5、物類群的分類檢索表。,練 習(xí) 二,為下列五類脊椎動(dòng)物中的幾種生物編制分類檢索表。,1a生活在水中···························鯨魚

6、1b不生活在水中························ 2,2a能夠飛行·········

7、3;····················蝙蝠2b不能夠飛行··············

8、3;············ 3,3a身體有條紋······················

9、83;····斑馬3b身體無條紋·························大熊貓,,1a有毒牙，無四肢···&

10、#183;··············眼鏡蛇1b無毒牙，有四肢··················· 2,

11、2a陸地生活····························蜥蜴2b可生活在水中······

12、;················ 3,3a有利齒···················

13、············鱷魚3b沒有牙齒·······················&

14、#183;····海龜,,1a雌雄同體·······················小丑魚1b不雌雄同體·····&#

15、183;················ 2,2a能產(chǎn)生電流··················&

16、#183;···電鰻2b不能產(chǎn)生電流··················· 3,3a全身長滿硬刺··········

17、·········刺豚3b身體沒有刺······················鯊魚,,1a能游泳，趾間有蹼·

18、3;··················綠頭鴨1b不能游泳，趾間沒有蹼···············

19、3; 2,2a不能飛翔·································鴕鳥2b能飛翔&#

20、183;··································· 3,3a

21、多夜間活動(dòng)····························貓頭鷹3b多白天活動(dòng)······

22、·······················麻雀,,1a無四肢············&

23、#183;···················蚓螈1b有四肢···············

24、83;················· 2,2a有尾··················

25、;·················大鯢2b無尾··················&#

26、183;················· 3,3a體表有疙瘩，內(nèi)有毒素············蟾蜍3b體表有疙瘩··

27、3;······················黑斑蛙,,某同學(xué)找到6只昆蟲，依昆蟲的外形特征做了如圖甲所示的檢索表。 （1）下列有關(guān)圖甲中所示昆蟲特征的說法，正確的是

28、 ； A.蜉蝣具有尾分兩叉、翅很明顯的特征 B.長蚤具有尾分兩叉、翅很明顯、腳細(xì)的特征 C.衣魚具有尾分三叉、翅不明顯、腳寬扁的特征 D.蚊具有尾不分叉、一對翅的特征 （2）圖2-8乙中的B蟲是圖甲中的昆蟲之一，則B蟲為 ；在圖乙的四只昆蟲中，肯定不是該同學(xué)找到的是