Which Environmental Factor Influences Whether a Population Has Mostly Light Skinned Or

Chapters 21-24
13.3
Supplemental Instruction
IowaStateUniversity / Leader: / Shelly
Course: / BIOL 101
Instructor: / Dr. Valenzuela
Date: / 4/29/15

1. Which environmental factor influences whether a population has mostly light skinned or dark skinned individuals?

1. Annual temperature
2. Annual rainfall
3. Levels of UV light
4. Vitamin D in diet
5. Mitochondrial DNA inheritance

1. Which of the following describe a population?

1. Interacting of different species
2. Interaction between all organisms in a specific environment
3. A group of the same species interacting
4. A wolf eating a moose

1. True/False: Wolves travel alone as individuals.
2. Exponential growth:

1. Is limited by environmental factors
2. Stops growing once it reaches the carrying capacity
3. Grows at a constant rate
4. The population never dies

1. Which of the following is an abiotic factor?

1. Predators
2. Fire
3. Food
4. They are density-dependent

1. Which would cause a population to grow?

1. Identical increases in the birth rate and death rate
2. Decrease in birth rate, increase in death rate
3. Increase in birth rate, decrease in death rate
4. Increase in birth rate, larger increase in death rate
5. Identical decrease in both birth rate and death rate

1. Which is a density dependent factor?

1. Elevated temperature
2. Prolonged winters
3. Viral disease
4. Forest fie
5. All of the above

1. What is a keystone species?

1. Group of interacting populations of different species living together
2. Species on which other species depend
3. Linked chain of feeding relations
4. Bees are not an example of this

1. What is the function of the stamen?

1. The female reproductive part of the flower
2. The male reproductive part of the flower
3. The sticky landing pad for pollen on the pistil
4. The structure that connects the stigma to the ovary

1. Producers:

1. Autotrophs that form the base of the food chain
2. Heterotrophs that eat other organisms
3. Interactions between organisms in the food chain
4. Predation on plants

1. Which is a parasitism relationship?

1. Bees pollinating flowers
2. Natural flora (bacteria) living in your intestines
3. Bees living in tree bark
4. Tapeworms in your intestines

1. How do butterflies pollinate?

1. Are attracted to red flowers
2. Are attracted to yellow, blue, and purple flowers
3. Look for tubular flowers
4. Prefer strong fragrances

1. Bees transfer pollen from the ______to the ______.

1. Anther, stigma
2. Stigma, style
3. Filament, ovary
4. Anther, ovary
5. Stigma, anther

1. A bear that eats blueberries and fish is a:

1. Omnivore
2. Heterotroph
3. Consumer
4. Producer
5. All of the above

1. What describes the temperate forest biome?

1. Warm temperatures with much rainfall
2. Low vegetation with permafrost
3. Evergreens
4. Moderate winters and rainfall

1. What is the reaction of the carbon cycle?

1. Look at pages 500-501 of the nitrogen and phosphorus cycles!

1. When identifying a biome, which would be most important to have data on?

1. Monthly rainfall
2. Temperatures throughout the year
3. Plant life
4. Animal life
5. Size of human population in area

1. Which organism reduces atmospheric CO2 levels?

1. Maple trees
2. Most algae
3. Polar bears
4. Pearthrips

1. Atmospheric nitrogen is in the form of:

1. N2
2. Proteins
3. Ammonium
4. Nitrates
5. Any of the above

1. True/False: Water is a renewable resource.
2. Which is associated with fossil fuels?

1. Water
2. Carbon dioxide
3. Nitrogen dioxide
4. All of the above

1. Determine which are renewable or nonrenewable:

Freshwater

Coal

Codfish in North Atlantic

Wind

Sunlight