Plant Stress Responses Quiz

Which of the following is a common osmoprotectant in plants?

• Glucose

• Glycine betaine

• Cellulose

• Starch

What is the primary function of antioxidant enzymes during abiotic stress?

• Promote protein synthesis

• Transport ions

• Scavenge reactive oxygen species

• Generate ATP

Which hormone is mainly associated with drought stress signaling?

• Ethylene

• Cytokinin

• Abscisic acid

• Auxin

Salinity stress causes toxicity primarily due to an excess of:

• Calcium and potassium

• Sodium and chloride

• Magnesium and sulfate

• Phosphorus and nitrate

Which of the following is a function of heat shock proteins (HSPs)?

• Promote chlorophyll degradation

• Assist in protein folding

• Inhibit enzyme activity

• Lower leaf temperature

The MAPK cascade is involved in:

• DNA replication

• Signal transduction under stress

• Cell wall synthesis

• Nutrient absorption

Which transcription factor family is linked to drought response?

• MYC

• DREB

• ARF

• WRKY

One of the key roles of PGPRs under stress is:

• Inducing seed dormancy

• Enhancing nutrient uptake

• Reducing transpiration

• Promoting flowering

Low-temperature stress results in:

• Increased cell division

• Increased membrane fluidity

• Membrane rigidification

• Enhanced photosynthesis

Marker-assisted selection helps in:

• Enhancing photosynthesis

• Identifying stress-tolerant traits

• Reducing pesticide use

• Modifying soil pH