右图表示某种生态系统中4种成分之间的关系,以下相关叙述中正确

右图表示某种生态系统中4种成分之间的关系,以下相关叙述中正确的是(  )

A.甲和乙所包含的所有种群构成群落

B.乙1的同化量越大,流向乙2的能量就越少

C.丙不一定是原核生物

D.丁的含量增加将导致臭氧层被破坏

 

答案

C

 

群落包含着甲和乙以及丙代表的所有种群;能量流动的大小与传递效率有关,与同化量呈正相关;丙可以是真核生物,也可以是原核生物;丁的含量增加不会破坏臭氧层。

 

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