A natural or synthetic filament that may be spun into
100
What are the general uses of plants by people?
Food, Fibre, Medicine, Construction, Fuel
100
What are the two types of plant roots?
Taproot, and fibrous root
100
What are the most common crops in Alberta?
Wheat, canola, barely, oats
100
What are the roles of soil?
Gives plants a place to sink their roots and anchor themselves, provides air, water, and nutrient for plants and decompose, and habitat for many species
200
What does osmosis mean?
Diffusion of water through a differentially permeable membrane
200
What are the seven major crops of the world?
Wheat, Rice, Maize (corn), Potatoes, Barley, Cassava and Sorghum.
200
What are the similarities and differences between osmosis and diffusion?
Both diffusion and osmosis is about about movement of materials from high concentration to low but osmosis is specifically about movement of water
200
What growing conditions can be controlled in a green house?
Weather, climate, and soil types
200
What is the typical composition of a healthy soil?
Bacteria, fungi ,microscopic actinomycetes , and earthworms
300
What does monoculture mean?
The use of land for growing only one type of crop
300
What are the roles of plants?
Produce oxygen, Basis of most food webs, Filters and store water, Holds soil in place
300
What are the different types of stems?
Runner, corms, and rhizome
300
What are the two main ways of harvesting trees?
Clear cutting, and selective cutting
300
What nutrients are included in fertilizers?
Nitrogen, phosphorus, and potassium
400
What does irrigate mean?
To supply land with water by artificial means
400
What are the three major types of plant fibers?
Cotton, hemp, flax
400
Describe the process of respiration
Respiration is a process where the plant release carbon dioxide and let oxygen into their cells. Oxygen and leaves are required
400
What is the outcome of soil erosion?
Soil become hard and useless, agricultural chemical in the water system cause serious pollution ,can bring salt into the land, killing all the plants
400
What do each of the nutrients contained in a fertilizer do?
Nitrogen: Makes leaves green
Phosphorus: Newly planted seeds and stems need for the best growing conditions
Potassium: Flowers and seeds need potassium
500
What does biological control mean?
Using pest’s natural enemies to control it
500
What are the examples of medicines from plants?
Opium poppies, Cinchona trees are source of medicines such as Morphine and Quinin
500
Describe the process of photosynthesis
Chlorophyll absorbs the sunlight and the plant absorbs carbon dioxide in the air. They combine these two to to make sugar. As a byproduct, oxygen is produced. Chlorophyll, carbon dioxide, and sunlight is required
500
What are the typical succession process after cutting?
Seeds are left behind. Then plants that need a lot of light rapidly grow. Then trees provide shade; more shade tolerant plants grow
500
What are the problems in maintaining a healthy soil?
salinization from irrigation and loss of organic matter and erosion