Soil Texture and Structure
Soils with a lot of this particle have little plasticity and do not retain water.
Sand.
A soil structure characterized by vertically oriented aggregates or pillars with flat tops.
Prismatic.
Kaolinite.
What gas do trees us in the process of respiration?
Oxygen.
Plant species that have male and female flowers on different plants are called this.
Dioecious species.
The term for the impact of people on a forest ecosystem.
Anthropogenic factors.
Soils with a lot of this particle are hard for plant rootlets to penetrate.
Clay.
Structure that is easy to see and separates cleanly when the soil is disturbed has this grade.
Why is soil with high shrink-swell potential hazardous?
It can buckle roads, crack dams and foundations, and damage plant roots.
What are three important processes that take place in the crown of a tree?
Photosynthesis, respiration, and transpiration.
What are the four main ways seeds travel?
Animals, wind, water, and gravity.
What is an example of a tertiary consumer.(E.g., "a THIS that eats THIS that eats THAT")
A snake that eats a raccoon that eats a shellfish.
(Other answers are acceptable.)
If soil forms a ball but does not form a ribbon, what is its texture?
Loamy sand.
What are the three main features related to soil consistence?
Rupture resistance, stickiness, and plasticity.
The weight of soils per unit volume of soil.
Bulk density.
In what layer of a leaf does most photosynthesis occur?
Right answer: the palisade layer.
Okay answer: the mesophyll.
What is the benefit of seeds' traveling a greater distance from the parent tree?
Less competition for resources such as sunlight, water, and nutrients.
The interaction of trees with mycorrhizal fungi is what kind of symbiotic relationship?
Mutualism (or a mutualistic relationship)
Soil structure can be degraded by compaction from farm equipment and by the impact of this.
Rain or raindrops.
In a test of stickiness, if soil adheres to both fingers but shows little stretch, what is its rating?
Slightly sticky.
True or false: Moist or wet soil is more resistant to compaction than dry soil.
False.
What part of a gymnosperm produces pollen grains?
A male cone.
What kind of trees often reproduce by sprouts from a stump after cutting?
Broadleaf (hardwood, deciduous) trees.
The process where similar species use limited resources in an area without one species driving the other to extinction.
Resource partitioning
This kind of structure has a minimum of pore spaces because of closely packed aggregates.
Poor or weak structure.
You form a roll of soil that is 4 cm (1-1/2 inches) long to evaluate this feature.
Plasticity.
To reduce soil compaction, under what conditions should landowners harvest timber?
When the soil is frozen or covered with snow.
What is contained inside a seed?
A tiny plant embryo and a food supply of starch for its development and growth.
After a seed germinates, what are the four main stages in the life of the tree?
Seedling, sapling, mature tree, snag (or dead tree)
What is a main benefit of a more biodiverse forest ecosystem?
Resistance to disease, pests, storms, fire, or other hazards.