Learning Task 3: In both estuary and intertidal zone, organisms have different roles to perform. In this task, identify the organisms that perform the given roles. Choose the word/ group of words in the box.
Salt marsh grasses
algae
sea urchins
green crabs
mollusk sand fleas
anemone
lichens cyanobacteria
marine snail small crab fiddlers
tube worms
detritus feeders
fish
diatoms fungi
shellfish bacteria
seaweeds
Role
Description
Organism
Producers
phytoplankton
They are organisms that produce food from sunlight and inorganic substances.
Consumers
They are organisms that eat other organisms.
Scavengers
They are organisms that eat food scraps and left-overs.
Decomposers
They are organisms that
breakdown into simpler materials the remains of dead organisms.
A
Learning Task 4. Make a model of ecological (energy) pyramid showing the arrangement of producers, consumers, scavengers and decomposers. You may include the organisms that you answer in Learning Task 3. You may use scrap materials in making the 3D model of ecological pyramid. The figure below gives you the idea of the content of the pyramid. You may ask your teacher for the rubric of the activity.
