Thomas Orf
Geography 1
10/ 6/ 2013
Chapter 11
Key Terms
Q1: Contrast and explain the concepts of ecosystem and biome.
A: An ecosystem is a natural unit consisting of all plants, animals and micro-organisms in an area functioning together with all the non-living physical factors of the environment.
Among terrestrial ecosystems, the type that provides the most appropriate scale for understanding world distribution pattern is called a biome.
Q2: What is an ecotone?
A: A region of transition between two biological communities.
Q3: What is the difference between a perennial and an annual plant?
A: Plants that endure seasonal climatic fluctuations from year to year are called perennials, whereas those that perish during rimes of climatic stress but leave behind a reservoir seeds to germinate during the next favorable period are called annuals.
Q4: Explain the difference between a gymnosperm and an angiosperm. Name trees that are examples of each.
A: The gymnosperm, carry their seeds in cones, and when the cones open,the seeds fall out. Gymnosperms are cone-bearing trees such as pines.
Angiosperms are the flowering plants. Their seeds are encased in some sort of protective body, such as fruit, nut, or pod. Trees, shrubs, grasses, crops, weeds, and garden flowers are angiosperms.
Q5: Explain the difference between a deciduous tree and an evergreen tree. Name trees that are examples of each.
A: An evergreen tree is one that sheds its leaves on a sporadic or successive basis but always appears to be fully leaved. Example: Pine
A deciduous trees is one that experiences an annual period in which all leaves die and usually fall from the tree, due to either a cold season or a dry season. Example: Oak
Q6: Explain the difference between a broadleaf tree and a needleleaf tree. Name trees that are examples of each.
A: Broadleaf trees have leaves that are flat and expansive in shape, whereas needleleaf trees are adorned