During stage 4, which statement about water transport is most accurate?

During stage 4, which statement about water transport is most accurate?

• A. Water continues to be imported via phloem
• B. No water import
• C. Water loss through transpiration concentrates sugars
• D. Water content increases

Answer: (C)

During stage 4, grapes enter veraison, when sugars accumulate but the berry’s water content drops. The key idea is that water leaves the berry through transpiration, reducing volume while sugars remain or increase, which makes the juice become more concentrated. This loss of water concentrates the sugars, making the statement about water loss through transpiration the most accurate. Water movement via phloem continues to deliver sugars, but it isn’t the primary driver of concentration here, and a growing berry does not increase its water content during this stage.

During stage 4, grapes enter veraison, when sugars accumulate but the berry’s water content drops. The key idea is that water leaves the berry through transpiration, reducing volume while sugars remain or increase, which makes the juice become more concentrated. This loss of water concentrates the sugars, making the statement about water loss through transpiration the most accurate. Water movement via phloem continues to deliver sugars, but it isn’t the primary driver of concentration here, and a growing berry does not increase its water content during this stage.