LT 1 Macro Invertebrates Question Preview (ID: 27073)
A Review Of Macro Invertebrates And How They Can Be Used To Assess Stream Quality.
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All of the following are true about macros except:
a) They are easy to catch.
b) They can be used to determine water quality.
c) They have different tolerances to pollution.
d) They are too small to be seen with the unaided eye.
When calculating cumulative index value, Group One macros are multiplied by what factor?
a) 1
b) 2
c) 3
d) 4
When calculating cumulative index value, Group Three organisms are multiplied by what factor?
a) 1
b) 2
c) 4
d) 4
Calculate the cumulative index value for a sample with 2 types each of Group 1, 2, and 3 macros
a) 10
b) 11
c) 13
d) 15
Calculate a sample that contains 2 Group Ones, 4 Group Twos and 3 Group Threes
a) 7
b) 15
c) 17
d) 18
Calculate a macro sample with 2 Group 1's, 3 Group 2's and 3 Group 3's.
a) 11
b) 12
c) 14
d) 15
Leeches, worms, and snails all belong to which macro group?
a) 1
b) 2
c) 3
d) none of the above
Group one macro invertebrates would be described as
a) intolerant to pollution
b) partially tolerant to pollution
c) tolerant to pollution
d) none of the above
When calculating cumulative index value, Group two macro invertebrates are multiplied by what value?
a) 0
b) 1
c) 2
d) 3
The term benthic means
a) bottom
b) top
c) warm
d) cold
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