[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fvqTavXKKArcpl2rsDncBFAOBr_lTYwaORVhgbNGxPYw":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-12-11 13:54:14",260027265,[8,9,10,11],"生物群落是在不同时间聚集在同一地段上的各物种种群的集合","生物群落是在不同时间聚集在不同地段上的各物种种群的集合","生物群落是在相同时间聚集在同一地段上的各物种种群的集合","生物群落是在相同时间聚集在不同地段上的各物种种群的集合",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},20,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","work_47740190","第8章作业","下列关于生物群落的叙述正确的是",[21,32,35,44,53,61,66,71,76,81],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],260027262,[25,26,27,28],"动物的分层现象主要与食物有关,每种动物只能利用一个层次","成层性的复杂程度是对生态环境的一种良好的提示","成层现象是群落中各种群之间以及种群与环境之间相互竞争和相互选择的结果","成层现象缓解了植物之间争夺阳光、空间、水分和矿质营养(地下成层)的矛盾","下列关于成层现象的叙述不正确的是","v1",0,{"answer":33,"createTime":5,"id":6,"options":34,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":36,"createTime":5,"id":37,"options":38,"question":43,"source":30,"type":31},[],260027268,[39,40,41,42],"物种的丰富度","物种分布的均匀度","海拔高度","物种分布的均匀度和丰富度","物种多样性指数的高低取决于",{"answer":45,"createTime":5,"id":46,"options":47,"question":52,"source":30,"type":31},[],260027270,[48,49,50,51],"每一个层片在群落中都具有一定的小环境,不同层片小环境相互作用的结果构成了群落环境","属于同一层片的植物是同一生活型类别<br>","层片指的就是层,成层性是植物群落结构的基本特征之一","每一个层片在群落中都占据着一定的空间和时间,而且层片的时空变化形成了植物群落不同的结构特征","以下选项中,不属于层片特征的是哪项",{"answer":54,"createTime":5,"id":55,"options":56,"question":59,"source":30,"type":60},[],260027271,[57,58],"正确","错误","同资源种团是群落中以同一方式利用共同资源的物种集团",3,{"answer":62,"createTime":5,"id":63,"options":64,"question":65,"source":30,"type":60},[],260027273,[57,58],"根据中度干扰假说,人类过度放牧将导致群落的多样性降低",{"answer":67,"createTime":5,"id":68,"options":69,"question":70,"source":30,"type":60},[],260027274,[57,58],"植物群落的水平结构主要表现为镶嵌性",{"answer":72,"createTime":5,"id":73,"options":74,"question":75,"source":30,"type":60},[],260027276,[57,58],"根据物种多样性的相关理论,则人类植树造林时不应该只种植单一树种",{"answer":77,"createTime":5,"id":78,"options":79,"question":80,"source":30,"type":60},[],260027279,[57,58],"组成群落的种类越丰富,用于计算群落物种数目的最小面积就越小",{"answer":82,"createTime":5,"id":83,"options":84,"question":85,"source":30,"type":60},[],260027281,[57,58],"群落交错区的种的数目及一些种的密度增大的趋势称为边缘效应"]