Measuring Photosynthesis

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

Tags

NGSS.MS-LS1-6

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

• the plant wilts

• the chlorophyll breaks down

• enzymes denature

• enzymes are killed

Tags

NGSS.MS-LS1-6

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

Tags

NGSS.MS-LS1-6

Through which structure do gases enter a leaf?

• Xylem

• Stem

• Stomata

• Roots

Why might increasing light intensity not increase the rate of photosynthesis?

• Plants don't need light for photosynthesis

• The plant already has lots of stored light

• A different limiting factor is preventing the rate of photosynthesis increasing

• Light intensity is never a limiting factor of photosynthesis

Tags

NGSS.MS-LS1-6

Why do palisade cells have lots of chloroplasts?

• To maximise photosynthesis

• To minimise photosynthesis

• To make them more green

• To protect them from sunlight

Tags

NGSS.MS-LS1-6

What is a limiting factor?

• Fruits, seeds, roots and tubers

• A chemical reaction

• Something that increases the rate of photosynthesis

• Something that slows the rate of photosynthesis

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-1

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

Tags

NGSS.MS-LS1-6

Name the gas that is produced and released by plants during photosynthesis.

• Carbon dioxide

• Oxygen

• Nitrogen

• Hydrogen

Tags

NGSS.MS-LS1-6