Plant Hormones and Tropism Quiz

Which plant hormone is produced in rapidly growing plant tissues like roots, flowers, and ripening fruit?

• Auxin

• Cytokinin

• Ethylene

• Gibberellic Acid

What is the function of ethylene in plants?

• Activates bud growth

• Induces fruit ripening and leaf abscission

• Regulates cell elongation

• Promotes root and fruit growth

Where is auxin found in plants?

• Root hairs

• Shoot apical meristem

• Bud activation

• Stomatal closure

What does cytokinin prevent in plants?

• Bud activation

• Cell division

• Fruit development

• Leaf senescence

Which plant hormone converts some juveniles into adult condition and vice versa?

• Auxin

• Gibberellic Acid

• Abscisic Acid

• Ethylene

What is the function of gibberellic acid in plants?

• Initiates dormancy

• Activates bud growth

• Stimulates pollen tube growth

• Converts starch into simple sugar

What does abscisic acid promote in plants?

• Resistance to stress condition

• Fruit and embryo development

• Stomatal closure

• Cell division

What are tropisms in plants influenced by?

• Hormones

• Genes

• Nutrients

• Temperature

Which plant tropism is influenced by gravity?

• Phototropism

• Hydrotropism

• Geotropism

• Thigmotropism

What controls circadian rhythms responses to daylight lengths in plants?

• Ethylene

• Auxin

• Cytokinin

• Phytochrome pigment