AP BIOLOGY

LABORATORY REVIEW

TRANSPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Transpiration will be fastest when the day is ____
A
cool, humid & windy
B
hot, dry & windy
C
hot, humid & windy
D
hot, humid & still
Explanation: 

Detailed explanation-1: -Transpiration will be fastest when the day is hot, dry and windy.

Detailed explanation-2: -Plants transpire more rapidly in the light than in the dark. This is largely because light stimulates the opening of the stomata (a mechanism). Light also speeds up transpiration by warming the leaf. Plants transpire more rapidly at higher temperatures because water evaporates more rapidly as the temperature rises.

Detailed explanation-3: -Direct sunlight warms up the leaves and causes the stomata to open, thus, more transpiration occurs during the day. The transpiration rate is higher on a sunny day compared to a cold dull day.

Detailed explanation-4: -It is easier for water to evaporate into dryer air than into more saturated air. Temperature: Transpiration rates go up as the temperature goes up, especially during the growing season, when the air is warmer due to stronger sunlight and warmer air masses.

There is 1 question to complete.