Exam 1 Flashcards
Complete Flowers have?
Pistal, Stamen, Corolla, Calyx
The science of crop management and improvement?
Agronomy
All people at all times have access to…
sufficient, safe, and nutritious food to maintain a healthy and active life.
Food Security includes?
Monetary and Physical ability to have food
Africa is being targeted for?
A second green revolution
Poverty, drought, and disease all contribute to?
Food insecurity
A complete flower is always a perfect flower? T or F
True
An incomplete flower is always an imperfect flower? T or F
False
What helped to increase crop production in the 20th century?
Synthetic pesticides
Malthusian Theory has not yet happened because?
The rate of food production has increased faster than he predicted.
Primary purpose of a leaf is?
photosynthesis
A ligule can be found in the?
Collar region of a grass plant
The stem between the branches?
Internode
Is a cotyledon a part of an embryo?
No
Is an endosperm, plumule, or radicle part of an embryo?
Yes
Modified stems?
Rhizome, stolon, and tuber
Stamen are the what parts of the flower?
Male
An adventitious root is?
A root that develops from any tissue other than root tissue
Function of phloem in a plant?
Moving sugar throughout the plant
An advantage of GM crops is?
The results are faster than classic breeding
Plants can reproduce through?
Seeds or stem parts
Global population growth follows a?
Exponential Pattern
Monoecious plants have?
Male and Female flowers on the same plant
Root hairs are responsible for
most water and nutrient absorption by a plant
The seed coat is mad up of carbohydrates and lipids and?
Protects the embryo
5000 BC Fertile Crescent
Irrigation
Egypt 3500 BC
Hand tools (hoe, plow)
Roman Empire 200 AD
Crop Rotations
Early agronomic practices
Irrigation, Hand tools (hoe and plow), Crop Rotations
Modern agronomic practices
Mechanization Synthetic fertilizers (nitrogen) Hybrid corn Soil conservation practices Synthetic pesticides Genetic Enginerring
Synthetic fertilizers (nitrogen)
1910’s
Hybrid Corn
1920’s
Soil conservation practices
1930’s
Synthetic pesticides
1940’s
Genetic engineering
1980’s
Drastic increase in food production in developing nations
Green revolution
Monocots have how many cotyledons?
One
Monocot cotyledons are always
below the ground
Monocots have what kind of veins?
Parralel
Monocots are?
Grasses
Dicots have how many cotyledons?
Two
Dicots are?
Broadleaf plants
Dicot cotyledons can either be?
Above ground or below
Collective term fro the sepals?
Calyx
Modified leaves that protect the flower?
Calyx
Collective term for the petals?
Corolla
A modified leaf?
Corolla
The female part of the flower?
Pistil
Pist has three parts?
Ovary, Style, Stigma
The male part of the flower?
Stamen
Produces pollen?
Stamen
Stamen has three parts
Anther, Filament, Pollen Grains
Incomplete flowers are?
Missing one or more parts
Perfect flowers have both?
Stamen and pistol
Imperfect flowers have only?
Stamen or Pitols.
Have imperfect flowers and both male and female flowers on the same plant?
Monoecious
Male and female flowers on different plants?
Dioecious
Seeds consist of
Embryo, Endosperm, and Testa (seed coat)
Swollen roots that store nutrients-especially carbohydrates?
Modified roots
Adventitious roots often occur when?
Stems come in contact with soil