Unit 1
What is an annual plant?
Completes its lifecycle in one growing season
What is the "brain of the cell"
The Nucleus
What % of soil composition is air?
25%
What are the basic structural unit of all living things including plants?
Cells
What is the center of origin?
Geographic region where a crop was domesticated
What is the correct order for binomial nomenclature?
Genus, Species
Which vegetative structure is known as the food factory of the plant
Leaves
Which soil texture out of the main 3 is the hardest to drain?
Clay
What is agronomy?
The science of crop management & improvement
What is organic matter otherwise known as?
Humus
What 2 countries really flourished from the green revolution?
Mexico & India
What does the pistil consist of?
Stigma, Style & Ovary
What is topography?
surface features of a region including hills, valleys, rives, lakes and mountains which impacts soil formation
What is the epidermis?
The outermost layer that protects the entire plant and may be found on the leaves
What does the stamen consist of?
Anther & Filament
Where was corn believed to be developed?
Central Mexico over 5,000 years ago
Where does primary growth occur?
In the apical meristem
What the the soil horizons in correct order?
What are lipids?
relatively large, carbon-based molecules that repels water and is important for cell membranes and energy storage
What is the Malthusian Theory?
A prediction in 1798 that human population will grow faster than food production can increase
What is a vascular plant?
plants that have tube-like cells in their roots, stems and leaves that carry water and nutrients throughout the plant
Chlorophyll must be present for plants to produce what?
Food
Which soil structure is grouped into flat, tubular aggregates with a thin vertical axis and a long horizontal axis?
Platy
What is subspecies defined as?
A group of plants within a species that are typically found in a specific geographic area and have a unique characteristic
What are the 4 stages of plant growth?
Seedling, Active, Reproduction & Maturation