Which tissue is labeled A?

Which substance mainly supplies food energy when transported through tissue B from a mature leaf to a growing fruit?

Sieve tubes belong to which plant tissue?

What is the loss of water vapor from a plant's leaves called?

Minerals accumulate in a plant's underground tissues, drawing in water by osmosis. Which mechanism can then push sap upward?

Water rises in a very narrow glass tube without a pump. Which process does this demonstrate?

What is a strand containing the two main conducting tissues in a stem called?

Which term describes the movement of soluble food from a producing part to other parts of a plant?

Which labeled structure controls the size of the opening?

During photosynthesis and transpiration, which movements usually occur through opening B?

Which leaf-cell structure makes sugars that can later be carried by phloem?

Which statement describes mature water-conducting vessel elements?

What change in the cells labeled A causes the opening to widen?

Which labeled part is specialized for taking up water and dissolved minerals from soil?

A watered plant is moved from humid air to drier air, with other conditions unchanged. What usually happens to its rate of water loss?

Which mechanism links evaporation from leaves to the upward movement of a continuous water column in a tall plant?

The diagram traces the usual path of water into and through a plant. Which part belongs at stage A?

Liza places a celery stalk in colored water. Later, colored streaks appear inside it. Which tissue most likely contains these streaks?

Which statement correctly compares how humans and green plants obtain food?

Besides carrying materials, how do the thick walls of water-conducting tissue help a plant?