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Which of these is the correct, general, word equation for photosynthesis?
water + carbon dioxide --> glucose + oxygen
water + oxygen --> glucose + carbon dioxide
glucose + oxygen --> water + carbon dioxide
Which of these is the correct, general, balanced symbol equation for photosynthesis?
C6H12O6 + 6O2 --> 6H2O + 6CO2
6H2O + 6CO2 --> C6H12O6 + 6O2
6H2O + 6O2 --> C6H12O6 + 6CO2
True or false? The name of the pigment used in photosynthesis which converts light energy into chemical energy is called xanthophyll.
Which of these tests would you use to detect the presence of starch?
Which of these abiotic factors are considered limiting for photosynthesis?
Humidity of air
Concentration of CO2
Acidity of soil
Which limiting factor causes photosynthesis to stop if it becomes too high?
True or false? Algae produce more oxygen and biomass by photosynthesis than plants.
Which of these complex molecules is used by plants for storage of glucose?
Fats and oils
Which of these mineral ions is essential for the construction of amino acids to make proteins?
True or false? Plants must store glucose as starch because starch is osmotically inactive.
Which of these methods of maximising photosynthesis is exclusive to hydroponic systems?
Suspending plants in water with a perfect balance of mineral ions
Raising internal temperature through glass or plastic roofs
Using computers to control light intensity, CO2 concentration and temperature
How does low temperature affect the size of plants?
It makes them larger
It does not affect them
It makes them smaller
Which of these plants would be most suitable in a soil with low concentrations of nitrate ions?
Venus fly trap
True or false? In deserts, plants stay out all year round and flower very slowly.
True or false? Mosquitoes are adapted to finding human prey as they are attracted to high carbon dioxide levels caused by exhalation.
What is a quadrat?
A square grid used for measuring the distribution of organisms
A small mammal that is usually found near motorbike racing courses
One of the four regions in a Cartesian grid
Which of these methods would be a scientific way of choosing a random sample for a quadrat?
Throwing a quadrat randomly anywhere
Dividing the region into four sections and then choosing an equal random sample from each
Dividing the region into squares of the same size as the quadrat and using a random number generator
Walking ten paces and throwing the quadrat in front of you
Which of these steps would you not do if you were carrying out a line transect?
Measure a line between two points
Take readings of physical factors at each measurement
Use a random number generator to decide where to measure
Measure at regular intervals
How would you find out the mean of a sample?
Subtract the lowest value from the highest
Take the middle answer when in ascending order
Take the most common answer
Divide the sum of all the readings by the number of readings
True or false? Valid data is where another person could repeat the experiment with different equipment and get the same answer.