是非判断题:(每题1分,共10分,对的画“√”,错的画“×”)(1)昆虫的翅膀上没有肌肉,所以昆虫的飞

2025-04-03 16:31:00
推荐回答(1个)
回答1:

(1)尽管昆虫的翅膀上没有肌肉,但是昆虫的飞行运动的动力来源于胸部的肌肉,所以这种说法错误.
(2)完成一个运动至少要由两块以上骨骼肌完成,比如屈肘时,肱二头肌收缩,肱三头肌舒张,所以这种说法错误.
(3)某一块骨骼肌两端的肌腱附着在不同块骨骼上,才能拉动骨骼运动.所以这种说法错误.
(4)世界上现存的哺乳动物有4000多种,虽然它们都已经高度进化,但仍具有很多共性:所有的哺乳动物都是温血动物,体温基本恒定,身上披有毛发,以保护身体、隔绝冷热等等.
(5)人体的每一个动作的完成,是由多组骨骼肌群共同作用的结果,比如屈肘时,肱二头肌收缩,肱三头肌舒张.
(6)蚯蚓属于环节动物,虽有肌肉,只是环状的肌肉组成,没有骨骼,所以不能快速运动.
(7)恒温动物不仅仅有哺乳动物还有鸟类,再者一些哺乳类动物其实并不是严格意义上恒温的,例如在冬眠时,它们的体温会下降10°C或更多.这样它们就可以节省能量,可以不吃或少吃(在间或的苏醒状态下)的情况下度过数月的严冬.如刺猬和冬眠鼠.所以这种说法错误.
(8)水中生活的动物不都用鳃呼吸,比如鲸鱼用肺呼吸,所以这种说法错误.
(9)水中生活的动物既有无脊椎动物,也有脊椎动物,不如鱼类是脊椎动物,乌贼等软体动物属于无脊椎动物.
(10)软体动物身体柔软,容易受伤,要用贝壳保护身体,但是乌贼、章鱼的贝壳退化.
故答案为:

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