The process in which plants draw water from their roots to their leaves where it evaporates into the atmosphere is called ________.

A .evaporation
B. condensation
C. precipitation
D. transpiration

Why is transpiration important for plants?
A. It allows the plant to breathe.
B. It keeps the plant exercised.
C. It keeps plants from getting too dry
D. It helps to regulate their temperature.

Plants control transpiration by opening and closing their _, which are similar to your ________ when you perspire
A. leaves; skin
B. stomata; pores
C. flowers; hands
D. capillaries; veins

The only possible answer for the first question is transpiration because precipitation is essentially rain (and all its forms), condensation is the collection of water, and evaporation is simply water in gas form -- thus making D the "odd one out".

For the second question, we know that transpiration is heavily dependent on stomata/guard cells. Exercise has nothing to do with this topic, and transpiration has very little to do with dryness (which makes B and C incorrect). Finally, plants do NOT breathe through transpiration. Instead, they breathe through plant (cellular) respiration (which eliminates A, leaving only D).

For the third question, we know that stomata/guard cells control a variety of cellular (and extracellular) activities in plants. When the stomata are closed, rates of transpiration decrease due to the inability of water to escape. When they are open, however, rates of transpiration increase and the plant loses more water. The most similar thing to that in the human body would have to be our pores, which open and close in response to stimuli (they release sweat when we're too hot, trigger the production of oils in our skin, etcetera). The other choices do not make much sense; for example, capillaries are used for distributing and receiving supplements from the soil and do not control transpiration.

Use logical reasoning and remember that stomata/guard cells control gas exchange and water loss. I recommend watching Hank Green's videos on plants if you are truly confused.

I hope I helped! :)

If you need me to explain the prompts in further detail, just send me a message and I will gladly elaborate on my responses.