Ecology Study Guide

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Name ____Tamara Diaz Velasquez__________ Date_____12/24/2012_______ Period_____7th________

Study Guide for Green Lab Book Exam

This study guide does not cover all of the material on your test. This review is meant to be a starting point to help you remember the major ideas that we covered in class. Be sure to also review the information in your notebook, lab book, and returned quizzes and tests.

1. What is ecology?
The scientific study of how living things interact with each other and their environment. 2. What are the ABCs of Ecology?
Abiotic, Biotic, and Cycles
3. What are the characteristics and needs of living things? Needs: Water, food, sunlight, shelter
Characteristics: movement, respiration, nutrition, irritability, growth, excretion, reproduction, death 4. Arrange the following from smallest to largest: population, biome, organism, community, ecosystem. Organism, population, community, ecosystem, and biome.

Ecosystems:
1. Define the following:
a. niche- the role of an organism in an ecosystem.
b. decomposer- an organism that feeds on and breaks down dead plant or animal matter.
c. producer- an organism that captures energy from sunlight and transforms it into chemical energy cccccccc cthat’s stored in energy-rich carbon compounds. Producers are a source of food for other organisms.

d. consumer- a living thing that gets its energy by eating other living things in a food chain.
e. limiting factor- a factor or condition that prevents the continuing growth of a pop. in an ecosystem 2. What do the arrows in food chains or webs mean?
Eaten by, gives energy to
3. The level of the energy pyramid with the most energy contains what type of organisms? How much energy is transferred each time you move up a level? The level that has most energy are the producers which are plants. 10% of the energy is transferred each time NJyou move up a level. 4. What is . . . a qualitative observation, a quantitative observation, and an inference? Qualitative- describing the appearance of something using words. Quality/look Quantitative- using numbers and words to describe something. Quantity/number Inference- a logical conclusion drawn from the available evidence and prior knowledge or observations. 5. Symbiosis – Define each term and give an example

a) mutualism- an interaction between two species in which both benefit. (Flowers and bees) b) parasitism- a relationship between two species in which one species is harmed while the other benefits. Xxxxx(Tapeworms and host) c) commensalism- an interaction between two species in which one species benefits without harming the dffffffother. (Moss and trees) 6. Describe the process of succession.

Primary:
1. Retreating glaciers expose bare rock where nothing lives. 2. Lichens appear and when they die, particles break down the rock and soil is made. 3. After a lot of years, there is a lot of soil. Other organisms appear like moss and insects. 4. When more soil is made, there are ferns, flowers, shrubs, and small trees 5. After many years there is enough soil to support a forest. Secondary:

1. A disturbance occurs in an area and the organisms no longer live there. Soon though, crabgrass grows. 2. Then more weeds begin to grow.
3. After about ten years, pine trees grow and after 100 years, a forest may form. 4. Pines may be replaces by hardwoods.

Photosynthesis and Respiration:
1. What is photosynthesis? Where does it happen? In what type of organisms? When does it happen? Photosynthesis is the process by which green plants and other producers use simple compounds and energy ddfrom light to make sugar, and energy-rich compound in the leaf of the plant. It happens during the day. 2. What is the formula for photosynthesis? Underline the reactants and circle the products. 6CO2 + 6H2O + SUN ENERGY C6H12O6 + 6O2

3. How do they...
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