Photosynthesis and Its Importance

What is the primary function of chlorophyll in photosynthesis?

• To convert water into glucose

• To store energy

• To produce oxygen

• To absorb sunlight

Which of the following is a byproduct of photosynthesis?

• Hydrogen

• Oxygen

• Carbon dioxide

• Nitrogen

What happens to a plant if it lacks the vital factors for photosynthesis?

• It starts photosynthesis

• It produces more chlorophyll

• It becomes a de-starched plant

• It continues to grow

Which solution is used to test for the presence of starch in leaves?

• Ethanol

• Water

• Iodine solution

• Alcohol

What is the purpose of placing the plant in the dark before the experiment?

• To promote growth

• To enhance leaf color

• To remove existing starch

• To increase chlorophyll production

Why is alcohol used in the experiment?

• To hydrate the leaf

• To bleach the leaf

• To enhance photosynthesis

• To provide nutrients

What is the role of black paper in the experiment?

• To absorb sunlight

• To block light from parts of the leaf

• To enhance leaf color

• To provide nutrients

What indicates a positive test for starch in the experiment?

• Leaf turns brown

• Leaf turns blue-black

• Leaf turns green

• Leaf remains white

What is demonstrated by the experiment regarding light and photosynthesis?

• Photosynthesis occurs only in the dark

• Photosynthesis is independent of light

• Light is not necessary for photosynthesis

• Light is essential for photosynthesis

What is the purpose of using a hot water bath in the experiment?

• To dry the leaf

• To color the leaf

• To soften the leaf

• To cool the leaf