Quiz on Stress Physiology and Flooding

What characterizes flooding in a system?

• Soil erosion

• Soil water saturation

• Increased oxygen levels

• Nutrient accumulation

What is the term for the absence of oxygen in the soil due to flooding?

• Hypoxia

• Oxygenation

• Anoxia

• Aeration

Which plant response involves the development of air-filled cavities in roots?

• Adventitious root formation

• Aerenchyma formation

• Leaf senescence

• Stem elongation

What role does ethylene play during flooding?

• Inhibits root growth

• Increases water loss

• Promotes aerenchyma formation

• Decreases leaf movement

Which hormone is primarily involved in elongation growth in response to submergence?

• Auxin

• Cytokinin

• Gibberellins

• Abscisic Acid

What is the N-end Rule Pathway associated with?

• Oxygen sensing

• Nutrient uptake

• Root respiration

• Water retention

What happens to ERF-VII proteins when oxygen concentration decreases?

• They are synthesized

• They are degraded

• They lose function

• They accumulate

Which of the following is a response to anaerobic conditions?

• Enhanced root respiration

• Switch to anaerobic metabolism

• Increased ATP production

• Improved nutrient uptake

What is the effect of abscisic acid (ABA) during flooding?

• Increases leaf expansion

• Regulates stomatal closure

• Enhances nutrient absorption

• Promotes root growth

What is the primary consequence of anaerobic conditions in soil?

• Enhanced root growth

• Reduced oxygen availability

• Decreased nutrient leaching

• Increased microbial activity