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Pregunta 1
Pregunta
Which of these is the correct, general, word equation for photosynthesis?
Respuesta
-
water + carbon dioxide --> glucose + oxygen
-
water + oxygen --> glucose + carbon dioxide
-
glucose + oxygen --> water + carbon dioxide
Pregunta 2
Pregunta
Which of these is the correct, general, balanced symbol equation for photosynthesis?
Respuesta
-
C6H12O6 + 6O2 --> 6H2O + 6CO2
-
6H2O + 6CO2 --> C6H12O6 + 6O2
-
6H2O + 6O2 --> C6H12O6 + 6CO2
Pregunta 3
Pregunta
True or false? The name of the pigment used in photosynthesis which converts light energy into chemical energy is called xanthophyll.
Respuesta
- True
- False
Pregunta 4
Pregunta
Which of these tests would you use to detect the presence of starch?
Respuesta
-
Tollens' reagent
-
Biuret reagent
-
Benedict's reagent
-
Iodine solution
Pregunta 5
Pregunta
Which of these abiotic factors are considered limiting for photosynthesis?
Respuesta
-
Temperature
-
Humidity of air
-
Concentration of CO2
-
Light
-
Acidity of soil
Pregunta 6
Pregunta
Which limiting factor causes photosynthesis to stop if it becomes too high?
Respuesta
-
Light intensity
-
Temperature
-
Concentration of CO2
Pregunta 7
Pregunta
True or false? Algae produce more oxygen and biomass by photosynthesis than plants.
Respuesta
- True
- False
Pregunta 8
Pregunta
Which of these complex molecules is used by plants for storage of glucose?
Respuesta
-
Protein
-
Cellulose
-
Starch
-
Glycogen
-
Fats and oils
Pregunta 9
Pregunta
Which of these mineral ions is essential for the construction of amino acids to make proteins?
Respuesta
-
NH4(+)
-
PO4(3-)
-
NO3(-)
-
Mg(2+)
Pregunta 10
Pregunta
True or false? Plants must store glucose as starch because starch is osmotically inactive.
Respuesta
- True
- False
Pregunta 11
Pregunta
Which of these methods of maximising photosynthesis is exclusive to hydroponic systems?
Respuesta
-
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
Pregunta 12
Pregunta
How does low temperature affect the size of plants?
Respuesta
-
It makes them larger
-
It does not affect them
-
It makes them smaller
Pregunta 13
Pregunta
Which of these plants would be most suitable in a soil with low concentrations of nitrate ions?
Respuesta
-
Belladonna
-
Venus fly trap
-
Oleander
Pregunta 14
Pregunta
True or false? In deserts, plants stay out all year round and flower very slowly.
Respuesta
- True
- False
Pregunta 15
Pregunta
True or false? Mosquitoes are adapted to finding human prey as they are attracted to high carbon dioxide levels caused by exhalation.
Respuesta
- True
- False
Pregunta 16
Pregunta
What is a quadrat?
Respuesta
-
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
Pregunta 17
Pregunta
Which of these methods would be a scientific way of choosing a random sample for a quadrat?
Respuesta
-
Throwing a quadrat randomly anywhere
-
Dividing the region into four sections and then choosing an equal random sample from each
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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
Pregunta 18
Pregunta
Which of these steps would you not do if you were carrying out a line transect?
Respuesta
-
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
Pregunta 19
Pregunta
How would you find out the mean of a sample?
Respuesta
-
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
Pregunta 20
Pregunta
True or false? Valid data is where another person could repeat the experiment with different equipment and get the same answer.
Respuesta
- True
- False
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