1. Review
Ch. 15 Sec. 3
1. List and briefly describe the 6 major biomes
2. Why are polar ice caps and mountains not considered biomes?
Ch. 1 Sec 3
3. You want to test a new drug that supposedly prevents sneezing in people allergic to grass. What is the independent variable? A. Sneezing B. Grass C. Drug
Ch. 14 Sec 3
4. Define population dispersion. Then draw the 3 types of population dispersion and explain a possible reason why leopards are found in a uniform dispersion.

2. Targets
1. Identify the 4 major ocean zones and organisms unique to each zone.
2. Describe the unique habitats of coastal waters

3. KEY CONCEPT Marine ecosystems are global.

4. The ocean can be divided into zones.
Ocean zones can be determined by their distance from shoreline and water depths.
intertidal zone—between low and high tide
neritic zone—from intertidal zone to continental shelf
bathyal zone—from neritic zone to base of continental shelf
abyssal zone –lies below 2000 m
intertidal zone
neritic zone
bathyal zone
abyssal zone

5. The neritic zone harbors more biomass than any other zone.
Plankton make up most of the biomass.
zooplankton
phytoplankton

6. Coastal waters contain unique habitats.
Coral reefs are found in warm waters.
tropical climate zone
great amount of biomass

7. Kelp forests are found in cold, nutrient-rich waters.
large communities of seaweed
great amount of biomass

8. Review Questions
Ch. 15 Sec. 3
1. List and briefly describe the 6 major biomes
2. Why are polar ice caps and mountains not considered biomes?
Ch. 1 Sec 3
3. You want to test a new drug that supposedly prevents sneezing in people allergic to grass. What is the independent variable? A. Sneezing B. Grass C. Drug
Ch. 14 Sec 3
4. Define population dispersion. Then draw the 3 types of population dispersion and explain a possible reason why leopards are found in a uniform dispersion.

9. Directions for Animation
Go to
Our book is biology 2010
Click on animated biology
On the left side of the screen click on Unit 5: Ecology
Click on Ch. 15 Where do they live?
Follow the directions in the animation and click on each organism for hints as to which zone they belong in
Once you have all the organisms correctly placed. Fill in the worksheet.

10. Marine biome- saltwater environment that includes the oceans and their shorelines. Covers 70% of the earth’s surface. Varied physical conditions with depth.
Marine Zones: classified by water depth, presence of light & distance from shore
1. Intertidal Zone- band of water at the water’s edge alternately covered by and exposed by water, organisms must be able to adapt to a variety of both temp & salinity
2. Neritic Zone- a relatively shallow zone lying above the continental shelf, it is rich in nutrients and light penetrates the bottom allowing for growth of phytoplankton and the animals that depend upon it for food
3. Bathyal Zone- extends from edge of the neritic zone to the base of the continental shelf between 200 and 2000 meters
4. Abyssal Zone- below 2000 meters, no photosynthesis only chemosynthesis
Benthic Zone- environment on the ocean floor, there are no plants and most animals are scavengers
Photic Zone- depth of about 200m, this is as far as light can penetrate. Algae produced here supply food for all heterorophs (animals that can’t make their own food)
Aphotic Zone- Light does not penetrate, organisms depend upon the photic zone for nutrients. Organisms live w/o light; some produce their own light (bioluminescent)
Oceanic (Pelagic) Zone- beyond the continental shelf is this vast and deep zone; populations of organisms are far less dense than in the shallower areas nearer to shore
Estuaries- shallow areas where fresh water and salt water mix (brackish) both freshwater and marine animals live here. Estuaries make up 10% of the marine biome but hold 90% of marine life. Main nesting areas for migratory birds and spawning ground for marine animals