Choose the One Most Appropriate Answer for Each

question 10

Multiple Choice

Choose the one most appropriate answer for each. Each letter will be used once.
-salicylic acid

• A)growth response that orients parts of a plant in a direction influenced by light
• B)burst of hydrogen peroxide and nitric oxide that causes infected cells to commit suicide
• C)an organism's response to changes in length of day relative to night
• D)organelle involved in sensing gravity
• E)light-sensitive pigment that helps set plant circadian rhythm based on length of night
• F)flowering after a long season of cold temperatures
• G)closes stomata in times of stress
• H)initiates fruit ripening in nearby fruits
• I)flowers only when hours of darkness fall below a critical value
• J)flavonoid in cocoa responsible for the unusual absence of heart disease in the Kuna
• K)occurring on a 24-hour cycle
• L)flowers only when hours of darkness are greater than some critical value
• M)activates systemic acquired resistance
• N)inhibits the growth of lateral roots
• O)mobilizes food reserves in germinating seeds

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Definitions:

Gametes

Sexual reproduction cells that unite during fertilization to form a new organism, with sperm being the male gamete and eggs the female gamete.

Genotype

The set of genes in our DNA which is responsible for a particular trait, as opposed to the physical expression of those genes which is known as the phenotype.

Phenotype

The collection of traits that can be seen in a person, which emerge from how their genetic makeup interacts with their surroundings.

Pleiotropy

The phenomenon where a single gene influences multiple phenotypic traits in an organism, demonstrating the complex nature of gene expression.