Quiz on Cold Stress in Plants

What is cold stress primarily caused by?

• Nutrient deficiency

• Low temperatures

• High temperatures

• Drought conditions

Which of the following is a type of cold stress?

• Drought stress

• Chilling stress

• Desiccation stress

• Heat stress

What is the role of C-repeat binding factors (CBFs) during cold acclimation?

• Increase photosynthesis

• Activate cold-responsive genes

• Regulate nutrient uptake

• Promote flowering

What happens to cell membranes during chilling stress?

• They expand

• They dissolve

• They become more rigid

• They become more fluid

What is the primary consequence of freezing stress in plants?

• Enhanced nutrient absorption

• Ice formation within cells

• Increased photosynthesis

• Improved growth rates

Which molecule is involved in cold stress signaling?

• Trehalose

• Sucrose

• Calcium ion

• Abscisic acid

What is the effect of low temperatures on sucrose synthesis?

• Increases synthesis

• Decreases synthesis

• No effect

• Increases photosynthesis

What is the role of Anti-Freezing Proteins (AFPs) in plants?

• Promote ice crystallization

• Inhibit ice crystallization

• Enhance nutrient uptake

• Increase photosynthesis

What physiological change occurs due to cold stress?

• Improved nutrient absorption

• Enhanced growth rates

• Decreased antioxidant enzyme activities

• Increased chlorophyll content

What is the primary function of trehalose in cold stress tolerance?

• Energy storage

• Stress protection

• Photosynthesis enhancement

• Cell division