botany practical Flashcards
(19 cards)
relative water content definition
reflects the balance between water supply to the leaf tissue and transpiration rate
transpiration rate definition
the process of water movement through a plant and its evaporation from aerial parts
aerial parts of plants
leaves, stems + flowers
ANOVA definition
analysis of variance results → that indicate whether there’s a statistically significant difference between the means of two or more
tukey’s HSD definition
honestly significant difference test that calculates a critical difference based on the mean squared error from the ANOVA and the number of groups being compared → if the difference between two group means is greater than the HSD, it’s considered statistically significant
turgid definition
fully hydrated
null hypothesis definition
no effect or difference
ANOVA equation
f-statistic + p-value
relative water content equation
RWC% = (wf/wt) x 100
wf definition
fresh weight
wt definition
turgid weight
purpose of calculating relative water content percentage
gives a normalised value between 0-100%
p-value results
if p-value is less than or equal to 0.05, the results are statistically significant → the likelihood of the observed data occurring by random chance is less than 5%
hydrophyte
plants that thrive and dominate watery habitats → can be emergent, submerged or floating
mesophyte
plants that grow under medium conditions of water
xerophyte
plants that have adapted to life in a dry of physiologically dry habitat → have mechanisms to prevent water loss or store available water
Kalanchoë daigremontiana
a succulent xerophyte from arid regions in madagascar
Iris pseudacorus
freshwater hydrophyte found in ditches and pools
Vicia faba
mesophyte crop species (broad bean) with no special drought adaptions
