JMU Bio 250 Lab Final UPDATED
ACTUAL Exam Questions and CORRECT
Answers
what are the steps of the scientific method - CORRECT ANSWER - observation, question,
hypothesis, test, evaluate
what are leaf stomata - CORRECT ANSWER - the principle means of gas exchange; pores
on the underside of a leaf that open to allow CO2 intake and water and oxygen to escape
how do you calculate stomate density - CORRECT ANSWER - density = number of
stomates/area viewed through microscope (area = πr^2)
what is oviposition - CORRECT ANSWER - where a female deposits her eggs
what is a clinometer used for - CORRECT ANSWER - measures angles to determine slope
and elevation
how do you calculate the height of an object using a clinometer - CORRECT ANSWER -
((% slope of top - % slope of bottom) x distance in meters) / 100
what is DBH - CORRECT ANSWER - diameter at breast height
where do you measure DBH - CORRECT ANSWER - 1.37 meters up from the ground
how does a GPS find location - CORRECT ANSWER - uses triangulation from satellites
what units does a GPS use - CORRECT ANSWER - degrees°, minutes', seconds" (DMS)
, how do you find the 4th corner of a quadrat - CORRECT ANSWER - use the triangulation
method: extend tape measures from 2 flags, find point where the 2 cross over at the same
distance
what are traits of a white oak tree - CORRECT ANSWER - - lightly colored bark
- narrow, broken bark towards bottom of tree
- bark becomes very flaky towards top of tree
what are traits of a chestnut oak tree - CORRECT ANSWER - - big thick ridges
- ridges usually triangular, pyramid-like
- red line in valley of ridge
- hard bark
what are traits of a black oak tree - CORRECT ANSWER - - dark colored bark
- irregular, broken ridges
- shallow, flat ridges
- can have thin stripes at top, not always
what are traits of a northern red oak tree - CORRECT ANSWER - - shallow, long ridges
- ski slope stripes
- ridges flat and shiny, sometimes crisscross
- ridges go throughout whole tree
what are traits of a black gum tree - CORRECT ANSWER - - mostly blocky, chunky bark
- usually medium gray but color can vary
- "nugget" bark
- can be easily confused with other oaks
ACTUAL Exam Questions and CORRECT
Answers
what are the steps of the scientific method - CORRECT ANSWER - observation, question,
hypothesis, test, evaluate
what are leaf stomata - CORRECT ANSWER - the principle means of gas exchange; pores
on the underside of a leaf that open to allow CO2 intake and water and oxygen to escape
how do you calculate stomate density - CORRECT ANSWER - density = number of
stomates/area viewed through microscope (area = πr^2)
what is oviposition - CORRECT ANSWER - where a female deposits her eggs
what is a clinometer used for - CORRECT ANSWER - measures angles to determine slope
and elevation
how do you calculate the height of an object using a clinometer - CORRECT ANSWER -
((% slope of top - % slope of bottom) x distance in meters) / 100
what is DBH - CORRECT ANSWER - diameter at breast height
where do you measure DBH - CORRECT ANSWER - 1.37 meters up from the ground
how does a GPS find location - CORRECT ANSWER - uses triangulation from satellites
what units does a GPS use - CORRECT ANSWER - degrees°, minutes', seconds" (DMS)
, how do you find the 4th corner of a quadrat - CORRECT ANSWER - use the triangulation
method: extend tape measures from 2 flags, find point where the 2 cross over at the same
distance
what are traits of a white oak tree - CORRECT ANSWER - - lightly colored bark
- narrow, broken bark towards bottom of tree
- bark becomes very flaky towards top of tree
what are traits of a chestnut oak tree - CORRECT ANSWER - - big thick ridges
- ridges usually triangular, pyramid-like
- red line in valley of ridge
- hard bark
what are traits of a black oak tree - CORRECT ANSWER - - dark colored bark
- irregular, broken ridges
- shallow, flat ridges
- can have thin stripes at top, not always
what are traits of a northern red oak tree - CORRECT ANSWER - - shallow, long ridges
- ski slope stripes
- ridges flat and shiny, sometimes crisscross
- ridges go throughout whole tree
what are traits of a black gum tree - CORRECT ANSWER - - mostly blocky, chunky bark
- usually medium gray but color can vary
- "nugget" bark
- can be easily confused with other oaks
