Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
33 Cards in this Set
- Front
- Back
|
A healthy diet requires an energy source such as ___ |
Carbohydrates or fat, protein, linoleic acid, and various vitamins, minerals, and water |
|
|
Plants are essentially the only terrestrial organisms that convert ____, to organic forms through photosynthesis |
Inorganic carbon, oxygen, hydrogen nitrogen, and sulfur |
|
|
What are autotrophs? |
“Self feeders” |
|
|
___ “other feeders” because they feed off autotrophs or other heterotrophs |
Heterotrophs |
|
|
Cultivated plants are grouped into 6 categories. List those 6 categories |
Cereal crops Roots & tubers Oil crops Sugar Fruit crops Vegetable crops |
|
|
What are examples of cereal crops? |
Wheat, corn, rice, barley, oats, sorghum, rye, millet |
|
|
What are examples of roots & tubers? |
Potatoes, sweet potatoes, cassavas |
|
|
What are examples of oil crops? |
Soybeans, corn, peanuts, palm, coconut, sunflower, olive, safflower |
|
|
What are examples of sugar? |
Sugar cane and sugar beets |
|
|
What are examples of fruit crops? |
Bananas, oranges, apples, pears, and many others |
|
|
What are examples of vegetable crops? |
Tomatoes, lettuce, carrots, melons, asparagus |
|
|
Only about 2.5 percent of cropland is devoted to ___, both in the United States and worldwide |
Fiber crops |
|
|
What is the most important and best-known plant fiber crop? |
Cotton |
|
|
___ is the processing of plants to produce biodiesel and ethanol for use mainly in internal combustion engines |
Biofuel |
|
|
Oil from ___ and other oil crops such as ___ is extracted and processed to be used as ___ |
Soybeans Sunflower and canola Biodiesel fuel |
|
|
The ___ in corn and switchgrass are ___ |
Starches and sugars Fermented to produce ethanol |
|
|
What is the advantage of biofuels over fossil fuels? |
They are renewable and hey sequester C02 during their growing cycle thereby reducing the carbon footprint |
|
|
The oil seed meal from crops processed from ___ and the ___ from ethanol production can be used as ___ |
Biodiesel Fermentation residue Animal feed |
|
|
Because the crops used are often food crops, using them for fuels ___ the ___. Even is they are not food crops, they may ___ |
Negatively affect The food supply for humans and animals Occupy many that was formally used for food crops |
|
|
Apart from fiber and biofuel, the major nonfood use of crops is for ___ |
Oil-based industrial products |
|
|
Tropical oil crops, such as ___ are the main sources of oils used on ___ |
Coconut and oil palm Soaps and detergents |
|
|
Temperate oil crops, such as ___ are used in the manufacturing of ___ |
Canola and soybean Lubricants and plastics |
|
|
Plants are the source of many ___ |
Drugs and medicines |
|
|
From the earliest history of modern humans m, the shaman and wise elders of a tribe used ____ and ____ |
Herbs to treat diseases Disorders among tribal members |
|
|
___, the study of plant usage by indigenous cultures and the preservation of that knowledge about plants has become an important branch of plant science |
Ethanobotany |
|
|
About ___ of pharmaceuticals are ___ and the rest are produced ___ |
25% Based on plant products Synthetically |
|
|
One of the newest plants to be recognized for its medicinal benefits is a ___, a chemical shows promise in the treatment of ___ |
Yew that produces taxol Cancer |
|
|
____ (EPA) data imply that more pesticides, mostly herbicides, are applied to lawns than to agronomic crops |
Environmental protection agency |
|
|
___ provide the plants for the urban environment |
Nurseries, greenhouses, and sod farms |
|
|
These crops with purely ___ are produced in about 6,800 hectares of ___ and 280,000 hectares of ___ which corresponds to about ___ |
Aesthetic value Greenhouses Open area 0.15 percent of the US crop area or about 1 percent of the area used for corn |
|
|
The combined value of the ornamental crops is about ___ of the value of corn |
50% |
|
|
Ornamental crops are much more ___ accounting for nearly ___ |
Labor intensive than are other crops 20% of US agricultural labor costs |
|
|
These enterprises provide ___ |
Jobs for many people, from day laborers to corporate executives |
