Agronomy Flashcards

Fall 2023 (Highland Community College)

1
Q

psychoactive compound in opium poppy

A

morphine, codeine

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2
Q

psychoactive effect of opium poppy

A

depressant

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3
Q

species

A

Each unique group of organisms is a different species. Individual members of a species share a similar genotype, phenotype, and environmental function.

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4
Q

psychoactive effect of coco

A

stimulant

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5
Q

psychoactive compound in tobacco

A

nicotine

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6
Q

ozone layer

A

layer in the atmosphere that absorbs the ultraviolet light that is extremely harmful to humans and plants

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7
Q

parasitic flowering plant

A

an obligate parasite that lacks a root system and instead uses a naustoria to absorb water and nutrients from its host.

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8
Q

parenchyma

A

type of tissue where plant cells containing chlorophyll are sites of photosynthesis and energy storage

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9
Q

parent materials

A

the weathered rock from which soils are formed

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10
Q

pasture

A

An area of land, usually fenced in, where plants are grown for grazing animals. Unfenced grazing areas are called range.

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11
Q

pathogen

A

an organism capable of causing disease

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12
Q

peanut

A

Legume grown for its edible, underground seed. Peanuts are consumed whole as a snack food, as peanut butter and in candy

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13
Q

pedigree selection

A

A method of selection that is economically used after hybridization. Plants are selected over multiple generations to produce a uniform product

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14
Q

pathogen

A

an organism capable of causing disease

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15
Q

peg

A

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.

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16
Q

perennial

A

plants that live for three or more years

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17
Q

perfect flower

A

flower that has both a stamen (male) and pistil (female) component

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18
Q

permanent wilting point

A

soil moisture at which a plant wilts because the water in the soil is unavailable to the plant

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19
Q

petal

A

the showy, modified leaf of a flower important for attracting pollinators

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20
Q

soil

A

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

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21
Q

soil fetility

A

ability of a soil to supply important checmial nutrients and essential elements to a plant

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22
Q

soil organism

A

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

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23
Q

biofuel crop

A

Plant material used as a fuel source. Some examples are corn for production of ethanol, hybrid willow or switchgrass for combustible pellets.

24
Q

secondary consumers

A

consumers that eat the primary consumers

25
Q

tilth

A

beneficial qualities of soil relating to crop plant growth

26
Q

tall fescue

A

perennial forage grass native to Europe

27
Q

Vitamin D

A

can be synthesized by humans upon exposure to sunlight

28
Q

dietary sources of Vitamin A

A

meats
dairy
green vegetables
carrots
tomatoes
squash

29
Q

rickets

A

= softening of the bones

30
Q

pyridoxine

A

= vitamin B6

31
Q

riboflavin

A

= vitamin B12

32
Q

dietary sources of niacin

A

turnip greens
peanut
meats

33
Q

niacin deficiency

A

= pellagra

34
Q

riboflavin deficiency symptoms

A

dermatitis
anemia

35
Q

dietary sources of pyridoxine

A

peas
meat
milk
beans

36
Q

dietary sources of folic acid

A

legumes
green leafy vegetables
whole grain

37
Q

folic acid deficiency symptoms

A

anemia
fatigue

38
Q

cyanocobalmin

A

= vitamin B12

39
Q

dietary sources of vitamin B12

A

meat
dairy

40
Q

vitamin B12 deficiecny symptoms

A

pernicioius anemia

41
Q

attaches the blade to the stem

A

petiole

42
Q

parts of a complete flower

A

petals
pistils
stamens
sepals

43
Q

pistil

A

female portion of a flower that contains the ovary, style and stigma

44
Q

showy, modified leaf of a flower important for attracting pollinators

A

petals

45
Q

male component of a flower

A

stamen

46
Q

produces the pollen - contain the sperm

A

anther

47
Q

indeterminate

A

plants that have contnual stem elongation and vegetative growht after flowering and throughout the growing season

48
Q

rhizobia

A

nitrogen fixing soil bacteria that forms symbiotic relationships with legumes

49
Q

tumor like growth on the roots of legumes causes by symbiotic bacteria called rhizobia

A

nodule

50
Q

day neutral plants

A

plants that flower with any duration of day length

51
Q

vernalization

A

plant response to winter conditions of cold tempetures and reduced daylight; important for triggering flowering in the spring

52
Q

dry matter

A

= weight of all the components of a plant minus the water

53
Q

General developmental stages of plants

A

seed
seedling
flowering
fruit
see
senescence

54
Q

growing degree days

A

unit measurement of heat accumulation for plants

55
Q

Layers of Earth’s atmosphere

A

Troposphere
Stratosphere
Mesosphere
Thermosphere

56
Q

How far into space does the atmosphere extend?

A

70 miles

57
Q

Governmental legislation involving agriculture and food supply

A

Farm Bill