About This Chapter
ASVAB: Ecology - Chapter Summary
This chapter's content aims to get you familiar with a variety of potential ASVAB ecology questions, including anything dealing with food chains, trophic levels and energy flow in an ecosystem. You'll also encounter these other topics across the chapter's lessons:
- Ecological succession
- Carrying capacity, migration and dispersion
- Different symbiotic relationships
- Population density, life history and survivorship
- The nitrogen cycle
- Fossil fuels and acid rain
- Biogeochemical cycling and the phosphorus cycle
- The carbon cycle
- Long-term carbon storage
- Predator/prey interactions and ecological niches
The main themes of each lesson are indicated by bold print so that you can readily identify them as you're studying. Your grasp of some of these key terms can be assessed with the chapter's practice quizzes.
Objectives of the ASVAB: Ecology Chapter
The score you receive on the ASVAB represents your suitability for military enlistment and may also help determine a proper job for you within the military. The General Science (GS) subtest's questions, presented in multiple-choice form, look at physical as well as biological sciences, including ecology. All the questions that make up the GS subtest amount to about 11% of the ASVAB content overall.
1. The Environment, Levels of Ecology and Ecosystems
Do you know the difference between an environment and an ecosystem? In this lesson, you'll find out what makes an environment, and what makes an ecosystem. You'll also learn what ecology is and some of the ways that scientists study ecology using organisms, populations, communities, ecosystems and even the entire biosphere.
2. Ecosystems, Habitats and Ecological Niches
Check out this video lesson to understand the many complex aspects of an ecosystem. See how animals live in habitats and survive amongst their surroundings.
3. Food Chains, Trophic Levels and Energy Flow in an Ecosystem
In this lesson, you'll learn about food chains, food webs, and the different roles that organisms play in an ecosystem. You'll also learn about how energy flows through an ecosystem.
4. Interspecific Competition, Competitive Exclusion & Niche Differentiation
What happens when two similar species that consume the same resources occupy the same space? Interspecific competition, that's what! Watch our video lesson to learn about the outcomes of this ecological battle.
5. Predator/Prey Interactions, Camouflage, Mimicry & Warning Coloration
You probably know that skunks can be quite stinky, bees sting and monarch butterflies are pretty, but do you know why? This lesson will introduce you to the reasons why some animals look or act the way they do and how these things relate to the predator/prey relationship.
6. Symbiotic Relationships: Mutualism, Commensalism & Parasitism
If your cat or dog has ever had fleas, you've witnessed symbiosis in action. In this lesson, learn the many types of symbiosis in biology, and how these relationships can have a positive, negative, or neutral effect on the individual species.
7. Populations: Density, Survivorship and Life Histories
Have you ever wondered how biologists determine the populations of animals in a particular geographic area? Watch this video lesson to find out, and discover how scientists look at the survivorship and life histories of many different species.
8. Carrying Capacity, Migration & Dispersion
Have you ever wondered why some types of birds fly south in the winter or why some animals form territories? Watch this video to learn about a species' maximum growth capabilities, the way its members group themselves and why they might migrate to new locations every year.
9. Ecological Succession: From Pioneer to Climax Communities
Just as people grow and change so, too, do ecosystems. Watch this lesson to learn about ecological succession from the beginning stages of development to a community's ultimate destination, or climax.
10. Biogeochemical Cycling and the Phosphorus Cycle
In this video lesson, we'll take a look at how elements large and small use other elements to grow. This is achieved through cycles. We'll look at macronutrients, trace elements and the biogeochemical and phosphorous cycles.
11. The Nitrogen Cycle, Acid Rain and Fossil Fuels
Do you know the difference between nitrite and nitrate? Do you have any clue how all the nitrogen in the atmosphere becomes usable? If you can't answer these questions, then you need to watch this lesson on the nitrogen cycle.
12. The Carbon Cycle and Long-Term Carbon Storage
All living organisms have a role in the carbon cycle. Do you know you understand how humans, animals and plants use carbon? This lesson will introduce you to the carbon cycle and explain how it functions on a global scale.
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Other chapters within the ASVAB Armed Services Vocational Aptitude Battery: Practice & Study Guide course
- ASVAB: Cell Biology
- ASVAB: Respiration & Photosynthesis
- ASVAB: Cell Division
- ASVAB: Genetics
- ASVAB: Evolution
- ASVAB: Classification
- ASVAB: Plant Biology
- ASVAB: Animal Biology
- ASVAB: Nutrition
- ASVAB: The Human Digestive System
- ASVAB: The Human Respiratory & Circulatory Systems
- ASVAB: The Human Excretory System
- ASVAB: The Human Endocrine System
- ASVAB: The Human Nervous System
- ASVAB: Human Reproduction
- ASVAB: Matter & Atomic Structure
- ASVAB: The Periodic Table
- ASVAB: Chemical Reactions & Bonding
- ASVAB: Measurement
- ASVAB: Nuclear Chemistry
- ASVAB: Motion
- ASVAB: Force
- ASVAB: Energy & Work
- ASVAB: Fluids
- ASVAB: Waves & Sound
- ASVAB: Geology
- ASVAB: Meteorology
- ASVAB: Oceanography
- ASVAB: Astronomy
- ASVAB: Understanding Words & Context
- ASVAB: Paragraph Comprehension
- ASVAB: Numbers
- ASVAB: Mathematical Operations
- ASVAB: Math Word Problems
- ASVAB: Numbers & Operations
- ASVAB: Fractions
- ASVAB: Basic Expressions
- ASVAB: Solving Equations
- ASVAB: Exponents
- ASVAB: Polynomials
- ASVAB: Geometry & Algebra
- ASVAB: Electric Force & Charge
- ASVAB: Magnetism
- ASVAB: Electric Circuits
- ASVAB: Power, Devices & Computers
- ASVAB: Mechanical Comprehension
- ASVAB: Assembling Objects
- ASVAB Armed Services Vocational Aptitude Battery Flashcards