Photosynthesis Lab Quiz

As you increased the wattage of the light bulb, the rate of photosynthesis (a)   .

• increased
• decreased
• stayed the same

As you increased the distance of the light, the rate of photosynthesis ​ (a)  

• decreased.
• Increased.
• stayed the same.

What gas was being produced by the plant to make the bubbles?

• O₂

• CO₂

• N₂

• NH₃

What color light bulb showed the highest rate of photosynthesis?

• clear

• red

• green

• blue

How has climate influenced the amount of stomata a plant has?

• the wetter the climate, the more stomata a plant has

• the dryer the climate, the more stomata a plant has

• the hotter the climate is, the more stomata

• climate has no effect on the number of stomata a plant has

What is the formula for photosynthesis?

• 6CO₂ + 6H₂O + glucose → C₆H₁₂O₆ + 6O₂

• 6CO₂ + 6H₂O + ATP → C₆H₁₂O₆ + 6O₂

• 6CO₂ + 6H₂O + heat energy → C₆H₁₂O₆ + 6O₂

• 6CO₂ + 6H₂O + light energy → C₆H₁₂O₆ + 6O₂

When might the guard cells close the stomata?

• at night

• when it is too hot

• when it is very dry

• all answer choices are correct

How does the leaf obtain water for photosynthesis?

• water comes up from the roots through the xylem

• water enters the stomata

• water comes up from the roots through the phloem

• water enters tiny holes in the stem

How does the leaf obtain carbon dioxide for photosynthesis?

• through tiny holes under the leaf called stomata

• through the roots

• through the stem

• plants need oxygen not carbon dioxide for photosynthesis

Why would all life on planet earth die if the sun went out tomorrow?

• The earth would become too hot for life to survive
• Producers rely on sunlight to make their own food.

• All consumers rely on producers for food/energy.