Directions:Read carefully and write the letter of your
answer
1. Most of the food for the aquatic ecosystem is
produced by
A worm B. phytoplankton C. fish D. shellfish
2. What kind of system formed by the interaction of a
community of organisms with their environment
A ecosystem B. intertidal zone
Cestoanes D. marine animals
3. What type of consumer feeds directly on a producer
A carnivore
B. second-order consumer
C first-order consumer D. Third-order consumer
4. The primary difference between a food chain and a
food web is that
4. a food web shows how energy is used
8. Food web is a complex system of food chain
c. a food chain shows how energy is stored
D. a food chain is a complex system of food chains
5. It is an ecosystem where the ocean floor is covered
and uncovered as the tide goes in and out.
A terrestrial 200 B. habitat
C. estuaries D. intertidal zone​