Plant Stress and Response

Which of the following is NOT a common indicator of plant stress?

How do plants generally respond to abiotic stress?

What is a direct consequence of oxidative stress in plants?

Which hormone plays a key role in the plant response to abiotic stress?

What mechanism do plants use to conserve water during drought?

What is the primary role of heat shock proteins in plants?

What is the main goal of mimicking natural photosynthesis in artificial systems?

What percentage of the world's oxygen production is contributed by microalgae?

What percentage of the world's oxygen is produced by phytoplankton?

Which of the following is a major abiotic factor that affects plants?

What is the primary function of photomorphogenesis in plants?

How do plants adapt to high temperatures?

What does CAM stand for in plant photosynthesis?

What occurs during rhizodeposition?

What is the function of the enzyme laccase in plants?

What is the primary function of xerophytes?

Plant Stress and Response

Decrease in photosynthetic activity is a common phenotype indicative of plant stress.
Plants generally respond to abiotic stress through genetic adaptation.
A direct consequence of oxidative stress in plants is DNA mutations.
Abscisic acid is the hormone primarily involved in the plant response to abiotic stress.

Plant Mechanisms for Dealing with Drought

Plants store water in stems to conserve water.
Dropping leaves is a mechanism used by plants to conserve water during drought.
Closing stomata reduces water loss in plants.

Heat Shock Proteins

Heat shock proteins protect against protein aggregation in plants.
Heat stress triggers the production of heat shock proteins.

Photobiology

Photobiology is the study of the interaction of light with living organisms.
Blue light is involved in the photoreduction of cryptochromes.

Phytochromes

Phytochromes regulate plant growth in response to light.

Microalgae

Microalgae contribute 30% of the world's oxygen production.
Heterotrophic microalgae obtain nutrients by consuming other organisms.
The Redfield ratio is significant in microalgae as it indicates the optimal nutrient ratio for growth.

Plant Adaptations

Xerophytes specialize in surviving in arid conditions.
Reducing leaf size is a method used by plants to adapt to high temperatures.
CAM (Crassulacean Acid Metabolism) is a method used by plants to adapt to high temperatures.

Plant Processes

Rhizodeposition is the process by which roots deposit organic compounds into the soil.
Laccase is an enzyme that degrades pollutants in plants.
Photomorphogenesis is the process by which plants adapt to the light environment.

Quiz on plant stress and response, including phenotypes indicative of plant stress, how plants respond to abiotic stress, and consequences of oxidative stress in plants.