《新教科版小学科学课件五年级上册《种子发芽实验(一)》课件》由会员分享,可在线阅读,更多相关《新教科版小学科学课件五年级上册《种子发芽实验(一)》课件(8页珍藏版)》请在金锄头文库上搜索。
子叶胚乳 4 Orcnid到二 杰 Cottonwood如 Dandelion学InChutou bt02-05 风传播的果实和种子Wind-dispersed fruits and seeds- Small seeds of orchids and poppiesMPe hlown around by light breezes- Seeds or fruirs of other Planhave plumes or wings rhat catch che wind- 图工-77 桃树的果实和种子实子植物-一Integoumenrary IlobeInteoumentaryiobePollen charmberNucenus SPcrangialwall ropyieIntegument bt12-02 种子的进化: 石炭纪早期三珠复员力, 更像种子。Receomnsrrucred ovules from the earlyrd are more seedlikei they are Progressively more The eveolurion of se:arbontferous PP 内部结构种巴腊外图她 范麻