Question

my courses / ag foundations - 4th period / plant science basics: plant processes - ne / check for understanding iii - photosynthesis ag foundations - 4th period highlight any text to hear text - to - voice speech. select language powered by google translate check for understanding iii - photosynthesis plant science basics: plant processes 2 of 5 which of the following is not a characteristic of light - independent reactions? form sugar molecules from water and carbon dioxide begin in the stroma of chloroplast performed when sunlight is present also known as carbon - fixing reactions

Explanation:

To solve this, we analyze each option based on photosynthesis knowledge:

• Light - independent reactions (Calvin cycle) form sugars from CO₂ (and use ATP/NADPH from light - dependent reactions), so "Form sugar molecules from water and carbon dioxide" is a characteristic (water is used in light - dependent, but CO₂ in light - independent to make sugars).
• Light - independent reactions occur in the stroma of chloroplasts, so "Begin in the stroma of chloroplast" is a characteristic.
• Light - independent reactions do not require direct sunlight (they can occur in the dark as long as ATP and NADPH are available), so "Performed when sunlight is present" is NOT a characteristic.
• Light - independent reactions fix carbon (convert inorganic CO₂ to organic compounds), so "Also known as carbon - fixing reactions" is a characteristic.

Answer:

The option "Performed when sunlight is present" (the third option in the list of choices).