如图是某学校兴趣小组调查的几种常见动物,请回答有关问题:(1)如果根据体内无脊椎骨进行分类,那么图

2025-03-16 08:43:59
推荐回答(1个)
回答1:

(1)B海蜇属于腔肠动物,C虾和D蝗虫属于节肢动物,E蚯蚓属于环节动物,它们的体内都没有脊柱,属于无脊椎动物;A海马是鱼类,F青蛙是两栖动物,它们的体温不恒定,属于变温动物;G鸟属于鸟类,H家兔属于哺乳动物,它们都有产热和散热的结构,也有保温的结构,体温恒定,属于恒温动物.
(2)D是蝗虫是昆虫,蜘蛛属于蛛形纲,虾和蟹属于甲壳纲,它们都属于节肢动物.节肢动物体表有外骨骼,足和触角都分节.D蝗虫是昆虫,生活在陆地上,用气管呼吸.
(3)E蚯蚓属于环节动物,用体壁呼吸,因而体壁经常保持湿润.
(4)F青蛙属于两栖动物,一生经过受精卵、蝌蚪、幼蛙和成蛙四个阶段,且蝌蚪和成蛙的形态结构和生活习性差别明显,属于变态发育.冬眠这种特性是动物生来就有的先天性行为.两栖动物生殖和发育离不开水,水污染和人类的滥捕滥杀都是造成该类群减少的原因.
(5)鸟类有发达的胸肌,牵动两翼完成飞行.双重呼吸,肺是气体交换的器官,连着气囊,储存气体,辅助呼吸.
(6)家兔是哺乳动物,其生殖特点是胎生哺乳.
故答案为:(1)B、C、D、E;G、H; (2)体表有外骨骼,足和触角都分节;气管; (3)E蚯蚓;用湿润的体壁呼吸; (4)变态;先天性行为;两栖动物的生殖和发育离不开水,因而水污染使其数量减少的原因;(5)胸肌;气囊. (6)胎生哺乳.

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