What Are the Roles of Abscisic Acid (ABA)and Gibberellins in Seed

question 133

Multiple Choice

What are the roles of abscisic acid (ABA) and gibberellins in seed germination? Select the TWO answers that are correct.

• A) When the amount of abscisic acid decreases,a seed begins to come out of dormancy.
• B) Levels of both gibberellin and abscisic acid must be high to initiate seed germination.
• C) Increasing gibberellin levels signal that conditions are favorable for seeds to germinate.
• D) Seeds germinate when gibberellin levels decline as days shorten and temperatures drop.
• E) Rising levels of abscisic acid make the seed coat split so the young plant can emerge.

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Definitions:

Market Price

The existing rate at which a service or asset is available for purchase or sale in the market.

Marginal Cost

The financial charge for creating one additional unit of a product or service.

Average Variable Cost

The total variable cost divided by the quantity of output produced, representing the cost of producing one more unit.

Market Price

The contemporary pricing at which a good or service is available for trading in a market context.