AP BIOLOGY

LABORATORY REVIEW

TRANSPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following conditions will favour a most reduced rate of transpiration?
A
reduced environmental temperature and high light intensity
B
increased environmental temperature and reduced wind speed
C
increased relative humidity and reduced wind speed
D
reduced relative humidity and increased wind speed
Explanation: 

Detailed explanation-1: -When there is no breeze, the air surrounding a leaf becomes increasingly humid thus reducing the rate of transpiration. When a breeze is present, the humid air is carried away and replaced by drier air.

Detailed explanation-2: -Answer: Solution: (a) Plants transpire more quickly on hot summer days as compared to cold winters.

Detailed explanation-3: -Hot temperature, dry and windy environment causes fastest transpiration rate.

Detailed explanation-4: -As the relative humidity of the air surrounding the plant rises the transpiration rate decreases. It is easier for water to evaporate into dryer air than into more saturated air.

There is 1 question to complete.