Question

characteristics of populations quiz
continuing biology (part b) pva (acc.ed) (sp26) / popula...

1. which of the following are techniques to estimate population size? (choose all that apply)

mark-and-recapture
population index
sampling
counting individuals

Explanation:

All listed options are valid techniques to estimate or determine population size:

1. Mark-and-recapture is a classic method for mobile organisms, using the ratio of marked to unmarked individuals in a recapture sample.
2. Population index uses indirect signs (like nests or tracks) to estimate relative population size.
3. Sampling involves counting individuals in representative sub-areas and extrapolating to the whole habitat.
4. Counting individuals is a direct method for small, accessible populations to get an exact population count.

Answer:

mark-and-recapture
population index
sampling
counting individuals