AP BIOLOGY

LABORATORY REVIEW

TRANSPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
By which process does a plant lose water to the atmosphere?
A
osmosis
B
photosynthesis
C
translocation
D
transpiration
Explanation: 

Detailed explanation-1: -Transpiration is a process that involves loss of water vapour through the stomata of plants. The loss of water vapour from the plant cools the plant down when the weather is very hot, and water from the stem and roots moves upwards or is ‘pulled’ into the leaves.

Detailed explanation-2: -Transpiration is the process through which plants lose water through stomata. Stomata are usually present on the underside of the leaves. It is essentially evaporation of water from the leaves of the plants.

Detailed explanation-3: -Water is lost by transpiration in the form of water vapor. Water vapor is almost completely devoid of dissolved salts or solutes, therefore water lost by transpiration is for all practical purposes, pure water.

Detailed explanation-4: -The water eventually is released to the atmosphere as vapor via the plant’s stomata-tiny, closeable, pore-like structures on the surfaces of leaves. Overall, this uptake of water at the roots, transport of water through plant tissues, and release of vapor by leaves is known as transpiration.

There is 1 question to complete.