Germinating Seeds and Respiration

What is required for aerobic respiration to occur in germinating seeds?

• Nitrogen and hydrogen

• Carbon dioxide and water

• Glucose and oxygen

• Sunlight and chlorophyll

What is the purpose of using dry seeds in one of the flasks during the experiment?

• To provide additional nutrients

• To act as a control

• To increase the rate of respiration

• To absorb excess moisture

Which material is used to detect the presence of carbon dioxide in the experiment?

• Vinegar

• Lime water

• Baking soda

• Salt water

What change is observed in lime water when carbon dioxide is present?

• It turns blue

• It turns milky or cloudy white

• It turns red

• It becomes clear

Why do the dry seeds not cause the lime water to turn milky?

• They do not produce carbon dioxide

• They are not in contact with lime water

• They absorb carbon dioxide

• They produce oxygen instead