生物问答题。种皮发育成什么?
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\u795d\u4f60\u597d\u8fd0!
珠被发育成种皮,位于种子外面,起保护作用。
胚珠发育成种皮
应该说种皮是由珠被（胚珠壁）反育而来的！
种皮会脱落
绛旓細涓夈闂瓟棰1銆佸湡澹ら噷涓昏鏈夊摢浜涙垚鍒?(鏈夋矙銆侀粡鍦熴佺┖姘斻佹按鍒嗐佽厫娈栬川鐭跨墿璐ㄧ瓑)2銆佺瀛愮殑韬綋涓鑸垎涓哄摢鍑犻儴鍒?(绉嶇毊銆佸瓙鍙躲佽儦鏍广佽儦鑺)3銆佺瀛愬彂鑺戒竴鑸渶瑕佸摢浜涙潯浠?(绌烘皵銆佹按鍒嗗拰涓瀹氱殑娓╁害)4銆佹鐗╃殑鏍圭殑鐢熼暱鏈浠涔鐗圭偣?(鏍瑰悜鏈夋按鍜屾湁鑲ョ殑鏂瑰悜鐢熼暱)5銆佸悜闃冲鍜岃儗闃村鐨勬鐗╃殑鐢熼暱鏈変粈涔堜笉鍚?(鍚戦槼澶勭殑...
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绛旓細25. 鐝犺鍙戣偛鎴绉嶅瓙鐨 ( ) A.鑳 B. 绉嶇毊 C. 鑳氫钩 D. 鏋滅毊 浜屻佷綘鑳藉垽鏂笅闈㈠乏渚у拰鍙充晶鍚勭粨鏋勪箣闂寸殑鍏崇郴鍚?璇风敤鐩寸嚎灏嗙浉鍏崇殑鍐呭杩炴帴璧锋潵 1.鎸夊巶鍒楃墿璐ㄥ垎鍒睘浜庡摢涓绫,鐢ㄧ嚎杩炶捣鏉 鈶犳按 鈶＄硸绫 A. 鏃犳満鐗 鈶㈣剛绫 鈶ｆ棤鏈虹洂 B.鏈夋満鐗 鈶よ泲鐧借川 鈶ユ牳閰 2. 鐢ㄧ洿绾垮皢涓嬪垪鍚嶈瘝涓庣浉鍏崇殑鍐呭杩炴帴璧锋潵 A....
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