Photosynthesis Quiz

In an experiment to measure the rate of photosynthesis, the number of oxygen bubbles produced is the...

• independent variable

• dependent variable

• control variable

• categoric variable

When do plants grow fastest?

• Spring

• Summer

• Autumn

• Winter

Which of these statements about light intensity is correct?

• Light intensity is proportional to 1/distance squared

• Light intensity is inversely proportional to distance

• Light intensity equals distance of lamp from plant

• Light intensity is proportional to 1/distance

How is temperature monitored in a photosynthesis experiment?

• Using a thermometer

• By putting the apparatus in a water bath

• Using a buffer

• By putting it next to a radiator

Photosynthesis stops at very high temperatures. The best explanation of this is...

• the plant wilts

• the chlorophyll breaks down

• enzymes denature

• enzymes are killed

Which of the following affect the rate of photosynthesis?

• Temperature, amount of carbon dioxide and light intensity

• Light intensity and amount of water

• Light intensity only

• Amount of water and temperature

Which of the following is an adaptation of leaves to photosynthesis?

• Few chloroplasts

• A small surface area to volume ratio

• Thick cuticle

• A large surface area to volume ratio

What is the most common limiting factor for plant growth?

• Water availability

• Concentration of carbon dioxide

• Concentration of oxygen

• Temperature

How can you measure the rate of photosynthesis?

• Using a ruler

• Measuring how fast oxygen or glucose are produced

• Measuring the growth of the plant

• Increasing how fast oxygen or glucose are produced

Through which structure do gases enter a leaf?

• Xylem

• Stem

• Stomata

• Roots