The newest 20 of 26 written questions. Open one to see it on the real paper.
Ascientist investigates the population of black salamanders in a 100km? area using a random sampling technique. Describe how the scientist: * uses random sampling * uses a quadrat to collect the data * — records the data collected ¢ obtains an estimate for the population of black salamanders.
See it on the paper →Describe how to build and use a pitfall trap.
See it on the paper →The results of the survey are shown in the table. number of different beetle species total number of beetles natural vegetation 25 103 farmland 14 51 Write two suitable conclusions for this survey.
See it on the paper →Calculate the mean number of beetles in natural vegetation. Give your answer as a whole number.
See it on the paper →Suggest why the mean number of beetles must be given as whole number.
See it on the paper →The bar chart shows the beetle population in another area of Argentina. 8 6 population 4 / beetles per hectare 2 0 0 2 4 6 year 8 10 12 14 A management strategy was introduced to protect the beetle population. Suggest the year the strategy was introduced. Give a reason for your answer. year reason The strategy was succ...
See it on the paper →Describe how a tape measure, a quadrat and a ruler are used to investigate the height of plants along one 10 m transect across the trail. ruler quadrat tape measure
Comprehensive responses • This question was generally well answered, with most candidates identifying at least one relevant point and many identifying several. The idea of random sampling over a large area was well understood. Limited responses • The idea of scaling up results to estimate population over a large area was less well understood. Not all parts of the question were addressed in some r...
— Examiner report, February/March 2026, 0680/22 Q2(b)(i) (Cambridge)
The responses to this question, requiring the description of how a scientist investigates the population of Spodoptera moths in a 1000 m2 field of maize using a random sampling technique, were variable. The stronger responses made good use of the prompts provided: uses random sampling uses a quadrat records the data collected obtains an estimate for the population of Spodoptera moths in the field....
— Examiner report, February/March 2024, 0680/22 Q1(c)(i) (Cambridge)
Many candidates suggested pitfall traps or pooters as one other method for estimating the population of Spodoptera moths.
— Examiner report, February/March 2024, 0680/22 Q1(c)(iii) (Cambridge)
Past papers, syllabus and examiner reports © UCLES (Cambridge University Press & Assessment). Questions are matched to topics from the official syllabus. AssessPro is independent and not endorsed by Cambridge.
A scientist investigates the population of Spodoptera moths in a 1000 m 2 field of maize using a random sampling technique. Describe how the scientist: • • • • uses random sampling uses a quadrat records the data collected obtains an estimate for the population of Spodoptera moths in the field.
See it on the paper →Suggest one other method for estimating the population of Spodoptera moths.
See it on the paper →State the site where the greatest average mass of fish is eaten per person in January.
See it on the paper →Describe how the student can use a quadrat to record the number of different plant species.
See it on the paper →The student decides to investigate the number of different types of insect living on plants along the transects. The student uses the equipment shown in the diagram. insect State the name of the equipment used by the student.
See it on the paper →The strategies used to protect the flamingos allowed the population to increase. In 2022, scientists estimated that over 80 000 flamingos lived on Inagua Island. Describe a method for estimating the population of Caribbean flamingos on Inagua Island.
See it on the paper →The result for measurement 10 is shown in the diagram. Key clover plant 1 m 1 m 1 m 1 m Complete the table to show the result for measurement 10.
See it on the paper →Describe how the farmer uses the quadrat to collect data and then estimates the total number of clover plants in the 100 m × 100 m field. method of data collection method of estimation
See it on the paper →The diagram shows a pooter. Describe how the pooter shown in the diagram is used to collect insects. You can add labels to the diagram to help your answer.
See it on the paper →The table shows the results of the student’s leaf investigation. plant number number of insects on five leaves field A field B 1 4 6 2 3 8 3 7 10 4 8 9 5 3 7 6 6 5 7 10 13 8 3 9 9 2 8 10 4 5 total 50 80 average 5 8 State the highest number of insects collected from one plant for each field. field A
See it on the paper →Plot a bar chart of the average number of insects on five leaves for each field.
See it on the paper →Calculate the average number of mango trees on a small farm.
See it on the paper →A student visited one small farm growing mango fruits for export. The student selected a box of these mango fruits. Five mango fruits were selected and weighed. The table shows the results. mango fruit mass / g A 485 B 522 C 546 D 510 E 543 total mass average mass
See it on the paper →