Plant Stress and Response
16 Questions
5 Views

Plant Stress and Response

Created by
@ExhilaratingDenver

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

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

  • Decrease in photosynthetic activity
  • Increased biomass (correct)
  • Enhanced fertility
  • Accelerated germination

    • How do plants generally respond to abiotic stress?

  • Hibernation
  • Behavioral changes
  • Movement
  • Genetic adaptation (correct)

    • What is a direct consequence of oxidative stress in plants?

  • Increased nutrient absorption
  • Enhanced growth
  • Faster reproduction
  • DNA mutations (correct)

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

    <p>Abscisic acid</p> Signup and view all the answers

    What mechanism do plants use to conserve water during drought?

    <p>Closing stomata to reduce water loss</p> Signup and view all the answers

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

    <p>Protect against protein aggregation</p> Signup and view all the answers

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

    <p>To create high-value chemicals using sunlight</p> Signup and view all the answers

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

    <p>20-30%</p> Signup and view all the answers

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

    <p>30%</p> Signup and view all the answers

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

    <p>Sunlight</p> Signup and view all the answers

    What is the primary function of photomorphogenesis in plants?

    <p>Adaptation to the light environment</p> Signup and view all the answers

    How do plants adapt to high temperatures?

    <p>Reducing leaf size</p> Signup and view all the answers

    What does CAM stand for in plant photosynthesis?

    <p>Crassulacean Acid Metabolism</p> Signup and view all the answers

    What occurs during rhizodeposition?

    <p>Roots deposit organic compounds into the soil</p> Signup and view all the answers

    What is the function of the enzyme laccase in plants?

    <p>Degradation of pollutants</p> Signup and view all the answers

    What is the primary function of xerophytes?

    <p>Growing in arid conditions</p> Signup and view all the answers

    Study Notes

    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.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    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.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser