环境学答案2023

第一章测试

1.For fish growth in the aquatic ecosystem, dissolved oxygen is a（ ）。
A:general ecological factor
B:biotic factor
C:limiting factor
D:abiotic factor

答案:C
2.Which of the following factors is not the limiting factor for fish growth in the aquatic ecosystem?（ ）
A:Soil nutrients
B:Temperature
C:DO
D:Silt

答案:A
3.Humans raising cattle for food is what kind of relationship?（ ）
A:intraspecific competition
B:parasitism
C:mutualism
D:predation

答案:D
4.Which is the abiotic factor of an organism’s environment?（ ）
A:fungi
B:bacteria
C:weather
D:plants

答案:C
5.Which is not the typical habitat of mosses?（ ）
A:moist
B:cool
C:shady
D:drought

答案:D