30 Questions
True or false: Gibberellins are released after water imbibition to signal the embryo to break seed dormancy.
True
True or false: Cytokinins promote cell division and cell differentiation.
True
True or false: Coconut milk is rich in cytokinins.
True
True or false: ABA (abscisic acid) influences most aspects of plant growth and development.
True
True or false: ABA accumulation in leaves causes stomata to close rapidly and reduces transpiration.
True
True or false: Ethylene is the only plant growth regulator that exists as a gas.
True
True or false: The period during which certain fruits ripen is called the climacteric.
True
Plant growth is defined as an increase in fresh or dry weight, volume, length, height, or surface area.
True
Development refers to the advancement in stages of maturation from earlier to later life stages.
True
Seed germination and growth of vegetative organs is a stage of plant development.
True
Fertilization, seed development, and maturation is a stage of plant growth.
False
Phytohormones are naturally occurring compounds that regulate growth and development in plants.
True
Auxin and cytokinin are types of phytohormones.
True
Gibberellic acid and ethylene are types of phytohormones.
True
True or false: Auxin is transported in the PHLOEM and is unidirectional (apex to base)?
True
True or false: Positive phototropism results from the growth of cells on the opposite side of the light source?
True
True or false: Auxin was later determined to be the signal responsible for phototropism?
True
True or false: Negative phototropism occurs in primary roots?
False
True or false: Differentiation is the term used to describe the process of cells developing different forms adapted to specific functions?
True
True or false: Dedifferentiation is the term used to describe the phenomenon of living differentiated cells regaining the capacity to divide?
True
True or false: Adventitious root formation is the primary regenerative process required in most cutting propagation?
True
The first line of defense in plants against herbivores and pathogens includes the cuticle, epidermis, and periderm.
True
Mechanical wounding by herbivores can create openings in plant tissue that allow for pathogen invasion.
True
Chemical lines of defense in plants include the release of toxins that kill or inhibit the growth of invading bacteria or fungi.
True
Plants have two types of responses to defend against herbivores and pathogens: PAMP-triggered defense and effector-triggered defense.
True
Physical defenses against herbivore attack in plants can include thorns, trichomes, spines, and prickles.
True
Toxins produced by plants can interfere with cell division in the pathogen or insect body.
True
Mind-altering plant products, such as hallucinogens or psychedelics, can deter animals from feeding on the plant again.
True
Plants can release volatiles in response to herbivory as warning signals to other plants, inducing defense mechanisms.
True
PAMP-triggered defense in plants is dependent on the plant's ability to recognize pathogen-associated molecular patterns (PAMPs).
True
Test your knowledge on gibberellins and cytokinins with this quiz! Learn about their roles in breaking seed dormancy, promoting cell division, and their presence in coconut milk.
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