investigating ecosystem

What materials are required to study plant population frequency?

• Ruler, tape, and soil

• Nails, a hammer, and thread

• Scissors, paper, and glue

• Seeds, water, and sunlight

How many quadrats should be made in total for the study?

• 5

• 10

• 15

• 20

What shape is formed by the nails in the quadrat?

• Triangle

• Circle

• Square

• Rectangle

After tying the nails with thread, what is the size of each quadrat?

• 0.5 m x 0.5 m

• 1 m x 1 m

• 2 m x 2 m

• 3 m x 3 m

What does the frequency value indicate?

• The total number of plants in the area

• The number of times a species is present in the quadrats

• The average height of the plants

• The type of soil in the area

How is the percentage frequency calculated?

• By dividing the total number of plants by the quadrats

• By adding all the species together

• By dividing the number of sampling units with species by the total sampling units and multiplying by 100

• By counting the total number of quadrats used

What is the first step in the procedure for the quadrat method

• Mark the presence of species in the table

• Hammer nails into the soil

• Calculate the percentage frequency

• Water the plants

How many times should each species be observed across the quadrats?

• Once

• Twice

• Three times

• As many times as they appear

Why is it important to select the right site for study?

• To ensure enough sunlight

• To have a variety of species

• To reduce the number of quadrats needed

• To avoid damaging the vegetation