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40 Cards in this Set
- Front
- Back
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What defines humans as individuals?
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Unitary Nature
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What does it mean to say unitary nature?
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From development, growth, and longetivtiy of unitary organisms are predictable and determinatie from conception on. the zygote formed formed through sexual reproduction grows into a genetically unique organism.
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Organisms may be ____ or _____?
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Unitary or Modular
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To be Modular refers to?
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the zygote develops into a unit of construction (a module) that then produces further, similar modules.
Ex: plants |
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Trees can be Modular or Unitary. True/Flase? If true, explain the differences between each of them.
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True.
Modular results from the zygote developing into a module that produces similar modules. unitary results from a tree,shrub, or plant grown from a seed with own genetic characteristics. |
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Definition of Population
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Group of individuals of the same species that inhabit a given area. A genetic unit with a specific gene pool.
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In terms of a population, what does the structure refer too?
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Density, proportion of individuals in various age classes, spacing of individuals relative to each other.
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In terms of a population, what does the dynamics refer too?
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It refers to the changes through time resulting from birth, death, and movement of individuals.
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Name 3 Examples of Modular Animals.
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1. Corals
2. Sponges 3. Bryozoans |
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What is a population's geographic range?
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The entire area in which a population occurs
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Where is the geographic range of the Sugar Maple (Acer Sacchrum)?
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North-Eastern U.S and spreads in North Central U.S
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What is Acer Sacchrum?
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Sugar Maple
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What does the Red Maple (Acer rubrum) thrive on? What is the minimum limit of its range?
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Thrives on a wider range of soil types, texture, acididty and elevation than any other forest speices in North America.
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What is the northern limit of the Red Maple (Acer rubrum)? Give an example of another geographic barrier to dispersal.
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-40 degrees minimum winter temperature in SE Canada.
The Ocean. |
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What is Acer rubrum?
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Red Maple
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What does Abundance reflect?(2)
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1. Population Density
2. Distribution |
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Population Density is the ____of ________ per unit area (crude density).
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1. Number
2. Indiviuals |
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True or False:
Density of individuals can be different in different parts of the range of the population. |
True
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Name three patterns of Spatial Distribution.
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Random
Clumped Uniform |
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What is the most common spatial distribution? What are some factors that contribute.
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Clumped:
1. Suitable resources in give area 2. Social behavior in animals 3. Asexual Reproduction |
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What is Ecological Density? This accounts for _____?
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The number of individuals per unit of available living space.
It accounts for patchiness. |
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Name the three ecological important age classes.
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1. Pre-reproduction
2. Reproductive 3. Post-Reproductive |
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What does life history representt?
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how long each individual remains in each class.
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What do age pyaminds represent?
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age structure of a population at a some period in time.
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What age-specific (note) patterns (2) make up the age structure of a population?
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mortality
reproduction |
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In plant populations, why is the age distrubition highly (often) skewed?
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The dominant overstory plants can inhibit the growth of seedlingsT
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True/False:
Sex ratios can not shift with age |
False- definietly can happen
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What is the primary sex ration at conception?
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1:1
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What is the secondary sex ratio? If not 1:1, what is it aimed at?
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Not 1:1. This is the sex ration at birth and is often weighed towards males but shifts over time b/c males often have shorter life span & shorter life expectancy
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Why do adavantages to females have in reference towards the sex ration change with age/
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1. Longer Life Expectacy
2. Longer Life Span |
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Even though females typically have the longer life expectancy and thus lower mortality....what species does not follow this trend?
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Birds- famles have high mortality and thus males ten to predominate.
Example: House sparrow ( Passer domesticus) |
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What terms are used to describe individuals moving within the population?
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Dispersal
Vagility Emigration Immigration |
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What term refers to the movement of individuals in space?
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Dispersal
(seed dispersal in plants) |
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Vaglity is? Give an example.
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refers to the ability to disperse
Spiders have great vagility. |
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DIfference between emigration and immigration is?
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Emmigration is the movement out of population
Immigration is the movement in a population |
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Term that refers to a repeated trip between two locations
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Migration
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Give an organism that is a example of a daily migration
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zooplankton in ocean
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Give an organism(s) that is an example of seasonal migration.
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Gray Whale
Ring-necked ducks |
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What do population distribution and density change in?
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Space
Time |
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What is Kuduz vine? Location of first introduced.
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An invasive species that was introduced as a ornamental vine at the Philadelphia Centennial Exposition of 1876. Then promoted as a fodder crop as means of controlling erosion.
1998- listed as Federal Noxious Weed |
