Holt CH. 18 Test Study Guide
The test will have 50 questions.
It will consist of :
completion (with word banks)
and a concept map (with word bank).
Please review the:
Holt on-line book for Chapter 18 Interaction of Living Things
the e-Activities tab containing the three section concept reviews
and the three tearouts from your green workbook.
Section 1 Everything is Connected p. 291 - 294
Section 2 Living Things Need Energy p. 295 - 300
Section 3 Types of Interactions p. 301 - 308
You should know the following:
Biotic : describes living things
Community is more than one population interacting
Population is the members of one species in an area
The five levels of organization
Abiotic: something that is not living
Producers: organisms that make the food using sunight's energy
Know what a food chain shows. It links the producer to the various levels of consumers. It shows just one organism connected by an arrow to another. Whereas the food web shows all the possible connections of the various organisms depicted.
Understand what the arrow in a food chain or food web represents.
It shows the direction of the flow of energy and points to the consumer
Understand Carrying Capacity.
It is the largest population an environment can support due to the limiting factors.
Understand that limiting factors determine an area's carrying capacity because animals need resources to survive.
Know predator and prey. If given a situation understand which one is predator and which is the prey.
Know "Competition" and if given a description be able to determine if it is an example of competition.
Know "Mutualism" and that it is a type of symbiosis in which both organisms are helped.
Know "Herbivore", "Carnivore", and "Omnivore" and that they are all consumers.
Know "Parasitism" and that the parasite invades or uses the "Host."
Be able to read and interpret a food web. (See your two handouts along with the book.)
Know the following terms:
Energy Pyramid (Remember it is a triangle-shaped diagram that shows how energy is lost.)
Know that Energy from the sun is made into food by Producers such as plants and algae, which are then eaten by Herbivores (animals that eat plants) and Omnivores (animals that eat plants and animals) which may be eaten by Carnivores (animals that eat only animals).