Agronomy Flashcards
Fall 2023 (Highland Community College)
psychoactive compound in opium poppy
morphine, codeine
psychoactive effect of opium poppy
depressant
species
Each unique group of organisms is a different species. Individual members of a species share a similar genotype, phenotype, and environmental function.
psychoactive effect of coco
stimulant
psychoactive compound in tobacco
nicotine
ozone layer
layer in the atmosphere that absorbs the ultraviolet light that is extremely harmful to humans and plants
parasitic flowering plant
an obligate parasite that lacks a root system and instead uses a naustoria to absorb water and nutrients from its host.
parenchyma
type of tissue where plant cells containing chlorophyll are sites of photosynthesis and energy storage
parent materials
the weathered rock from which soils are formed
pasture
An area of land, usually fenced in, where plants are grown for grazing animals. Unfenced grazing areas are called range.
pathogen
an organism capable of causing disease
peanut
Legume grown for its edible, underground seed. Peanuts are consumed whole as a snack food, as peanut butter and in candy
pedigree selection
A method of selection that is economically used after hybridization. Plants are selected over multiple generations to produce a uniform product
pathogen
an organism capable of causing disease
peg
Elongated ovary of the peanut plant which buries itself in the soil after pollination to form the peanut. Peanuts are harvested by digging up the crop.
perennial
plants that live for three or more years
perfect flower
flower that has both a stamen (male) and pistil (female) component
permanent wilting point
soil moisture at which a plant wilts because the water in the soil is unavailable to the plant
petal
the showy, modified leaf of a flower important for attracting pollinators
soil
biochemically weathered, uppermost layer of the earths crust. It is a unique ecosystem and an essential resource for the production and growth of plants and crops
soil fetility
ability of a soil to supply important checmial nutrients and essential elements to a plant
soil organism
Biotic (living) entity that lives in the soil and is essential for nutrient cycling and overall soil functions. These include fungi, bacteria, earthworms, insects, rodents, snakes