Which piece of equipment can be used to estimate the population size of a given species in a defined area?CalculatorTransectQuadratTape measure2A student measures the number of snails in a garden by taking 10 random 1 m2 quadrat readings. If the numbers recorded are 3, 2, 1, 4, 2, 4, 5, 5, 2 and 2, what is the mean number of snails per m2 in the garden?302343A field measures 10 m by 30 m. In ten 1 m2 quadrats thrown randomly onto the field, an average of 5 flowers is counted. What is the estimated number of flowers on the whole field? 150050030001504What is a quadrat placed along a transect used to measure? The sizes of different species in a defined areaA change in species distribution along a set lineThe numbers of different species along a set lineThe estimated population of a single species in a defined area5Which of the following are abiotic factors that might affect the distribution of a species?TemperatureImmersion by waterAll of theseLight intensity

Estimate the dandelion population size for a field with an area 300 m² and a mean of 2.4 dandelion plants per 1 m² quadrat.

Which measurement gives the most accurate number for a population in an area?A.Add the individuals who come into an area because of reproduction or immigration.B.Add the biodiversity of an area to the carrying capacity.C.Add the individuals living or born in an area and subtract those who die.D.Subtract the animals that die from the total carrying capacity

Select the correct answer.Which term do biologists use to describe the average number of individuals of a species per unit area? A. carrying capacity B. population density C. minimal viable population D. survivability curve

How do ecologists estimate the total number of species present in theworld?

Plant biologists want to estimate the density of kudzu plants within a 20-square kilometer North Carolina forest, but they are arguing about how to proceed. Which of the proposed methods below would best balance efficiency and accuracy?Multiple ChoiceCount the kudzu plants in one randomly selected square kilometer. Use that number as the estimate of the number per square kilometer within the forest.Count the kudzu plants in 10 randomly selected square kilometers. Calculate the average to estimate the number per square kilometer.Assign each of 20 workers a square kilometer in which to count every kudzu plant. Calculate the average to estimate the number per square kilometer.Count the kudzu plants in 30 randomly selected 10-square-meter areas. Calculate the average density per square kilometer and use it to estimate the overall density in the forest. Count the kudzu plants in one randomly selected 5-square-meter area. Divide by 5 to determine the number of kudzu plants per square meter in the forest.