蚜虫与草,蝗虫与草,这些生物之间的关系依次为(   ) A.捕食  竞争 

蚜虫与草,蝗虫与草,这些生物之间的关系依次为(   )

A.捕食  竞争           B.竞争  捕食

C.寄生  捕食           D.捕食  寄生 

答案

C 


解析:

蚜虫具有刺吸式口器,靠吸食汁液为生,应属于寄生关系,雄蚊与植物等.蝗虫具有咀嚼式口器,碎食植物属于捕食关系。

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