Biology Plants and Photosynthesis Quiz Longer

What is the function of guard cells?

• Are responsible for the opening and closing of the stomata

• Provide a waxy covering on leaves to prevent water loss

• Transport water from the roots to the leaves

• Transport sugars from the leaves to the roots

Which of the following (select all that apply) are true of C4 plants?

• Found in hot, dry climates

• Photosynthesis is spatially separated, with the carbon fixed in mesophyll cells and then transported to bundle sheath cells

• Photosynthesis is temporally separated, with carbon fixed and stored at night, then used in the Calvin cycle during the day

• Include plants such as pineapples

• Include plants such as sugarcane

Which of the following (select all that apply) are true of CAM plants?

• Found in extremely dry climates

• Photosynthesis is spatially separated, with the carbon fixed in mesophyll cells and then transported to bundle sheath cells

• Photosynthesis is temporally separated, with carbon fixed and stored at night, then used in the Calvin cycle during the day

• Include plants such as pineapples

• Include plants such as sugarcane

The purpose of photosynthesis is to...

• Produce glucose which the plant can then use as a source of energy

• Produce oxygen to increase the concentration of oxygen in the atmosphere

• Produce carbon dioxide which the plant can then use as a source of energy

Which of the following is the correct formula for photosynthesis?

• Carbon dioxide + Water + Sunlight --> Oxygen + Glucose

• Carbon dioxide + Sunlight --> Water + Oxygen + Glucose

• Water + Sunlight + Oxygen --> Carbon dioxide + Glucose

• Glucose + Oxygen --> Carbon dioxide + Water + Energy

• Oxygen + Energy + Carbon dioxide --> Water + Glucose

___________ is the main pigment that absorbs sunlight for use in photosynthesis.

• Chlorophyll

• Stomata

• Thylakoid

• Mesophyll

Which of the following best explains why artificial lights used for plant growth have a light spectrum that favors blue and red light?

• Blue and red light are the wavelengths best reflected by chlorophyll which means they are used most in photosynthesis.

• Blue and red light are the wavelengths best absorbed by chlorophyll which means they are used most in photosynthesis.

• Blue and red light are the wavelengths that are easiest to make.

• Blue and red light are the wavelengths that allow for the greatest production of carbon dioxide.

Why do plant leaves look green?

• Green is absorbed the most by chlorophyll in the leaves, so that is the color our eyes see.

• Green is reflected the most by chlorophyll in the leaves, so that is the color our eyes see.

• Green light has the wavelength that is most efficient for photosynthesis.

Which of the following are true of the light-independent (Calvins Cycle) phase of photosynthesis? Select all that apply.

• Glucose is produced

• ATP is produced

• NADPH is produced

• Water is used

• CO₂ is used

Which of the following are true of the light-dependent phase of photosynthesis? Select all that apply.

• Glucose is produced

• ATP is produced

• NADPH is produced

• Water is used

• CO₂ is used