Exam 6: Plant Adaptations to the Environment

The ratio of surface area to weight for a leaf is called the ________.

Under ideal conditions, the allocation of carbon to the further production of ________ tissue will promote the fastest growth.

The stage of photosynthesis during which chlorophyll absorbs light energy is called the ________.

Plants growing in shade tend to allocate more to leaf production than to root production compared to plants growing in full sun.

The process of converting CO₂ into organic molecules is called

Allocation to increased root production would be expected to increase both mineral nutrient acquisition and the rate of carbon gain through photosynthesis.

Explain why the opening of stomata has both benefits and costs for plants in dry environments.

________ temperature controls the rates of photosynthesis and respiration.

Some aquatic plants can utilize HCO₃⁻ as a carbon source but must first convert it into CO₂ by using the enzyme

Members of the same plant species always exhibit the same response to changes in temperature.

Organisms that derive their energy from sunlight are referred to as

CAM plants use the enzyme PEP carboxylase to capture CO₂.

Nitrogen is a plant micronutrient.

In nature, water potential values (ψ)typically range from zero to increasingly positive values.

Which of the following is considered a plant adaptation to low-nutrient environments?

Many plants adapted to arid environments utilize the ________ photosynthetic pathway to fix CO₂ during the night.

________ are openings in the leaves of terrestrial plants that allow for the uptake of CO₂.

Features of the physical environment that directly influence plants, such as light and temperature, typically act on plants independently from each other.

The higher the concentration of solutes in a solution, the lower that solution's osmotic potential.

Shaded leaves of a plant in partial sunlight, exhibit ________ when they respond as if they themselves have been directly exposed to high light.