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请结合如图分析回答下列有关鸟的生殖和发育的问题: (1)诗句“谁家春燕啄春泥”

题型:实验题

题目:

请结合如图分析回答下列有关鸟的生殖和发育的问题:

(1)诗句“谁家春燕啄春泥”描写了燕子繁殖行为中的______行为.

(2)在下图所示鸡卵结构中,将来发育成雏鸡的是[    ]_________;为胚胎发育提供营养的是[      ]________和[ ]_________,为胚胎发育提供氧气的结构是[ ]_________.

(3)下表是几种鸟卵孵化成雏鸟所需要的时间:

鸟名   家燕   麻雀   家鸽   鸡 鸭 天鹅   鸵鸟

孵化时间╱天    12---15 14  17--19  20---22 28---32 34---38 45

由表中数据你得出的结论是

答案:

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