30 daisies are counted in 6 quadrats on lawn A. Calculate the mean number of daisies per quadrat.

Ecologists sample a field using 10 quadrats, and and find the following number of dandelions in each:1, 4, 2, 2, 3, 4, 2, 5, 0, 1What is the mean number of dandelions per quadrat?

Q1. Students used quadrats to estimate the population of dandelion plants on a field. (a) Describe how quadrats should be used to estimate the number of dandelion plants in a field. ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ (4) (b) The field measured 40 m by 145 m. The students used 0.25 m 2quadrats. The students found a mean of 0.42 dandelions per quadrat. Estimate the population of dandelions on the field. ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ Estimated population of dandelions = ______________ (2) (c) In one area of the field there is a lot of grass growing in the same area as dandelions. Suggest why the dandelions may not grow well in this area. ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________

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

Frances owns a landscaping business. She has 425 plants and is placing an equal number of plants into 47 yards. After planting, how many plants will she have left to take home and plant in her own yard? A. 0 plants B. 1 plant C. 2 plants D. 3 plants

A zoo has a 5-acre bird sanctuary and a 30-acre wildlife area. The total number of animals in the zoo is 4,150. The equation 5x+30y=4,150 represents this situation. Which of the following is the best interpretation of y in this context?AThe average number of animals per acre in the bird sanctuaryBThe average number of animals per acre in the wildlife areaCThe total number of animals in the bird sanctuaryDThe total number of animals in the wildlife areaConsy SondeQuestion 5/5BACKNEXT