Quiz on Investigating Population Size

What tool is commonly used by ecologists to study population size?

• Quadrat

• Thermometer

• Microscope

• Spectrophotometer

What is a quadrat?

• A type of microscope

• A square frame for sampling

• A method of data analysis

• A species identification guide

Which of the following is NOT a method to measure abundance using quadrats?

• Estimating percentage cover

• Recording species richness

• Measuring soil pH

• Counting individual species

What does species richness refer to?

• Total number of individuals of a species

• Total number of different species

• Percentage of area covered by a species

• Total biomass of a species

What abiotic factor can influence plant abundance?

• Soil type

• Predation

• Competition

• Disease

What is the purpose of using a species key?

• To calculate population size

• To identify species

• To measure temperature

• To estimate biomass

What should be controlled when using quadrats?

• The time of day

• The weather conditions

• The type of soil

• The size of the quadrat

Which of the following is an abiotic factor?

• Disease

• Competition

• Temperature

• Predation

What is the first step in estimating population size using quadrats?

• Identify the species

• Measure the soil pH

• Count the number of species

• Select a random area