Oct 7 and Oct 8

Objective:
Students will discuss food chains and trophic levels in order to explain the flow of energy in an ecosystem.


Warm Up:

Use the following diagram to answer questions 1 and 2.


1. A pond community is represented in the diagram above. Which term defines the interactions between the organisms of this community and the physical factors of their environment?
F. Population
G. Ecosystem
H. Biotic
J. Competition

2.This pond ecosystem will be self-sustaining if
A. the organisms labeled A outnumber the organisms labeled B
B. the type of organisms represented by B are eliminated
C. the organisms labeled A are equal in number to the organisms labeled B
D. materials cycle between the organisms labeled A and the organisms labeled B

3. Which is a biotic factor that affects the size of a population in a specific ecosystem?
F. average temperature of the ecosystem
G. type of soil in the ecosystem
H. number and kinds of predators in the ecosystem
J. concentration of oxygen in the ecosystem

4. Which of the following is not true about matter in the biosphere?
A. Matter is recycled in the biosphere.
B. Biogeochemical cycles transform and reuse molecules.
C. The total amount of matter decreases over time.
D. Water and nutrients pass between organisms and the environment.

5. A student measured different variables affecting the interactions in an aquarium in a biology laboratory. Which of the following represents one of the abiotic factors the student most likely recorded as data?
F. the weight and color of each type of scavenger
G. the temperature and oxygen content of the water
H. the size and number of each species of fish
J. the number of each type of green plant and each type of snail

Vocabulary:
1. Chemosynthesis
2. Heterotroph
3. Consumer
4. Herbivore
5. Carnivore

Classwork
1. Warm Up and Vocabulary
2. Go over warm up and vocab
3. Partners- Ecology worksheet


Homework Due:
Read and Outline 3-3


Tonight's Homework:
None