Lab #8 - Plant Hormones & Experimental Analysis

These flashcards cover the key concepts of plant hormones, their roles, production sites, effects, and experimental analysis methods as described in the lecture notes.

The five major plant hormones include Auxin (IAA), __, Gibberellin (GA), Abscisic Acid (ABA), and Ethylene.

Cytokinin

Auxin (IAA) is produced in the __.

shoot tips (apical meristems)

Cytokinin primarily promotes __.

cell division (mitosis)

Gibberellin (GA) promotes __ and helps seeds break dormancy.

internode elongation (stem height)

Abscisic Acid (ABA) prepares plants for __ by slowing growth and promoting dormancy.

environmental stress (e.g., winter)

Ethylene is known for its role in __.

ripening and senescence (aging)

High levels of __ inhibit lateral bud growth and promote apical dominance.

auxin (IAA)

Gibberellin (GA) vs. Abscisic Acid (ABA): High GA triggers __ while high ABA maintains dormancy.

spring growth (bolting, flowering)

The experimental prediction for Group C (intact tip + synthetic IAA) is that it will be the __.

tallest

The statistical analysis technique used to compare means of 3 or more groups is called __.

ANOVA (Analysis of Variance)

The formula for standard deviation involves finding the mean, subtracting it from each value, squaring the deviations, and then __.

dividing by the number of values to find variance

If the calculated F value is greater than the critical F value, we __ the null hypothesis (H₀).

reject

The expected outcome of applying Gibberellin (GA) to dwarf plants is that they will grow __ than those without it.

taller

To determine standard deviation (SD), you need to take the square root of __.

variance

Auxin helps in cell elongation and __.

inhibiting lateral bud growth (apical dominance)

Cytokinins are primarily produced in the __ of the plant.

root tips

The effect of Ethylene includes promoting __ and leaf drop.

fruit ripening

In an experiment, removing an apical tip reduces auxin and results in __ growth of lateral buds.

increased

Statistical significance in ANOVA is indicated if F is greater than __.

the critical F value

Group B in the experiment had no apical tip and no __ treatment.

IAA