OBJECTIVE LIFE SCIENCE
ECOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Place it where you like
|
|
|
Divide the sample area into a grid and use a random number generator to choose a square.
|
|
|
Throw the quadrat so it’s random
|
|
|
Divide the sample area into a grid and choose a square.
|
Detailed explanation-1: -Quadrat-random sampling Divide the area to be sampled into a grid using measuring tapes placed at right angles to each other. Use random numbers to generate coordinates within the grid on which to place the quadrats. Count the numbers/estimate percentage cover of each species in each quadrat.
Detailed explanation-2: -The average number of individual organisms within the quadrat area is called the population density. The quadrat equation uses the population density to calculate the estimated total population or N: N = (A/a) x n, where A is the total study area, a is the area of the quadrat, and n is the population density.
Detailed explanation-3: -The usual procedure for randomly positioning quadrats is this: A base line is marked out along the edge of the habitat using a measuring tape. It must extend all the way along the edge of the habitat. Random numbers are obtained using either a table or a random number generator on a calculator.