Unit 6 Practice Exam – 12/7/17

  1. What does the blastopore become in deuterostomes?
  2. Anus
  3. Mouth
  4. Arms
  5. Legs
  1. Which of the following has the highest evolutionary fitness?
  2. A woman who dies at the age of 90 and has 1 child
  3. A woman who dies at the age of 50 and has 4 children
  4. A woman who dies at the age of 60 and has 2 children
  5. A woman that dies at 70 and has 3 children
  1. How much tall-grass prairie remains in Iowa?
  2. 10%
  3. 50%
  4. 1%
  5. 2.5%
  1. What does the theory of Island Biogeography say?
  2. Species that colonize far from the mainland on a small island will have high species diversity
  3. Species that colonize close to the mainland on a small island will have high species diversity
  4. Species that colonize far from the mainland on a large island will have high species diversity
  5. Species that colonize close to the mainland on a large island will have high species diversity
  1. Farmers in Iowa that use nitrogen containing fertilizers in their fields and on their residential lawns are contributing to what?
  2. Increased oxygen levels in the ocean
  3. The Dead Zone in the Gulf of Mexico
  4. The loss of ozone in the atmosphere
  5. The evolution of pesticide-resistant insects
  1. What is nitrification?
  2. The conversion of nitrogen gas to ammonia or ammonium
  3. When plants convert nutrients in the soil to nitrogen
  4. The removal of nitrogen from the atmosphere
  5. The decreasing rate of nitrogen in the nitrogen cycle
  1. Food chains are short because…
  2. Energy transfers very easily between trophic levels
  3. Energy does not transfer well between trophic levels
  4. Too many animals are dying and it’s shortening the food chain
  5. Plants aren’t making enough energy
  1. Which organism is crucial in the nitrogen cycle?
  2. Bacteria
  3. Plants
  4. Dogs
  5. Worms
  1. How do we have energy in the food chain?
  2. Photosynthesis
  3. Heterotrophs
  4. Primary consumers
  5. Detritivores
  1. Which of the following describes a commensalism relationship?
  2. +/0
  3. +/-
  4. -/-
  5. +/+
  1. Which is responsible for the fact that species can coexist in a community?
  2. Niche partitioning
  3. They learned to be neighbors
  4. Competition
  5. Commensalism
  1. A species that has an unusually large effect on the ecosystem compared to its size is called…
  2. A keystone species
  3. A top-down species
  4. A bottom-up species
  5. A dominant species
  1. Which of the following defines Batesian mimicry?
  2. A harmless species looking like a harmful species
  3. Two harmful species looking alike
  1. Which of the following defines Mullerian mimicry?
  2. A harmless species looking like a harmful species
  3. Two harmful species looking alike
  4. T/F: Parasites typically kill their hosts.
  5. True
  6. False
  1. What is the following an example of: a bug lives inside the mouth of a seagull. It cleans the seagull’s mouth and in turn gets to eat the bacteria out of the seagull’s mouth.
  2. Mutualism
  3. Communalism
  4. Predation
  5. Parasitism
  1. Which of the following describes predation?
  2. +/+
  3. +/-
  4. +/0
  5. -/-
  1. Which of the following describes a type I survivorship curve?
  2. High probability of living to adulthood and low probability of dying as juveniles
  3. Low probability of surviving juvenile years
  4. Steady rate of death throughout life
  1. Which of the following describes a type II survivorship curve?
  2. High probability of living to adulthood
  3. Steady rate of death throughout life
  4. Low probability of surviving juvenile years
  1. Which of the following describes a type III survivorship curve?
  2. Low probability of surviving juvenile years
  3. Steady rate of death throughout life
  4. High probability of living to adulthood and low probability of dying as juveniles
  1. What does species diversity describe?
  2. How many species there are in a community
  3. Which species is dominant compared to the others

Things to Know for the Exam:

-Theories we discussed in class about ecology

-How energy transfers in the food chain

-Which groups have high energy needs

-Basics of the Nitrogen cycle

-Definitions of species relationships such as mutualism, commensalism, etc.

-Basic community ecology regarding why species can coexist

-Both types of mimicry

-Be familiar with survivorship curves

Please do not let this review be the only thing that you study! Go over all lecture slides and do the review questions several times per section. Good luck!