15 Questions
What is the most severe environmental constraint to plant productivity?
Scarcity of water
Which factor probably causes the highest loss in crop yield?
Drought stress
What does drought stress reduce in plants?
Leaf size, stem extension, and root proliferation
Which strategy has been proposed to cope with drought stress?
Genetic modification of crop plants
What is disturbed by drought stress in plants?
Plant water relations
What does drought stress reduce in terms of plant physiology?
Water-use efficiency
What is the main reason for the reduction in CO2 assimilation by leaves under drought stress?
Stomatal closure
Which mechanism helps in curtailed water loss under drought stress?
Prolific and deep root systems
Which nutrient aids in osmotic adjustment to withstand drought stress?
Potassium ions
What type of metabolite flux increases the oxidative load on tissues under drought stress?
Photorespiratory pathway
Which plant growth substance modulates the plant responses towards drought?
Abscisic acid
Which strategy can be used for managing plant drought tolerance?
Osmoprotectants
What is among the major deterrents to growth under drought stress?
Injury caused by reactive oxygen species
What helps reduce the transpirational loss in plants under drought stress?
Stomatal closure
What acts as antioxidants and reduces the adverse effects of water deficit?
Polyamines and several enzymes
Test your knowledge about the effects, mechanisms, and management of plant drought stress with this quiz based on a review article from Agronomy Journal. Explore the key concepts and strategies for dealing with drought stress in plants.
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