What is the most closely related term to "transpiration"?
a. osmosis
b. evaporation
c. transportation
d. capillary action

Osmosis refers to an direct exchange between two elements in contact, evaporation is a change of state, transportation usually means a physical movement, and the capillary action refers to a reaction on the surface of a liquid.

If I had to choose, I'd go for evaporation, since transpiration can be related to the ejection of water from plants to the atmosphere, and the evaporation of water is implied :)

The answer is letter B.

Evaporation is the most closely related term for the word transpiration. It is the process in which moisture is carried from the plants roots to small pores on the underside of leaves. Moisture then changes into vapor and is released into the atmosphere. Simply put, transpiration is the evaporation of water from plant.  

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