Exam 6: Plant Adaptations to the Environment

The force exerted outward on a plant cell wall by the water contained in the cell is called ________.

The enzyme that catalyzes carboxylation during photosynthesis is called ________.

Draw a graph to illustrate how gross photosynthesis and respiration respond to temperature change. Label Tₒpt on the graph.

Some plant species are able to release ________ from flooded or submerged roots to increase aeration and prevent anaerobic conditions.

Pneumatophores are typical of plants (particularly trees)

The primary drawback of the C₃ photosynthetic pathway is that

Small compound leaves dissipate heat more readily than broad, unlobed leaves.

The value of PAR above which no further increase in photosynthesis occurs is referred to as the

Net carbon uptake per unit time by a plant is directly related to

The effect of solute concentration on the state of water loss from plant cells is called

Explain why all of life on Earth ultimately depends on photosynthesis.

Halophytes accumulate high levels of ions within their cells.

The light and dark reactions of photosynthesis occur in different areas of the chloroplast.

Briefly outline the trade-off a shade-tolerant species makes in order to survive in low light.

Photoinhibition is the negative effect of high light levels on respiration.

Describe the features of the C₄ and CAM photosynthetic strategies. Relate your description to why C₄ and CAM plants are successful in hot and/or arid environments.

Which of the following is an incorrect statement?

A ________ is a daily pattern of physiological response to an environmental cycle.

The process of water loss by plants through stomata is called ________.

Once dissolved in water, the CO₂ molecule reacts with water to form ________.