AP BIOLOGY

Detailed explanation-1: -Water evaporates in the leaf cells forming water vapor. The air in the atmosphere surrounding the plant has a lower concentration of water vapor molecules than the space within the stomatal pore. The water vapor molecules therefore move from the stomata into the atmosphere.

Detailed explanation-2: -Movement of the air bubble will be faster. Reason : Moving air produces dry air which increases the rate of transpiration which hence increases the movement of air bubble.

Detailed explanation-3: -When plants lose excess water, the rate of absorption increases and wilting takes place. When wilting occurs, the cells of the plants lose water and become dry. When the conditions are dry and hot in summer, the rate of water evaporation is rapid.

Detailed explanation-4: -Transpiration is the evaporation of water from plants occurring at the leaves while their stomata are open for the passage of CO2 and O2 during photosynthesis.

Detailed explanation-5: -In bright sunlight, the rate of transpiration is more. So, the movement of air bubble will more. If the velocity of the wind increases, the rate of transpiration increases. So, the air bubble will move faster before a fan.