"Identify the interactions among living things and non-living things in tropical
rainforest, coral reefs and mangrove swamps*
A Encircle the letter of the correct answer
1. Which among these is an example of a natural ecosystem?
a. dam
grassland c. subdivision
d. wheat grass
2. Which among these is NOT an artificial ecosystem?
a. corn field dam
c. swamp
d. 200
3. Which is an example of an abiotic factor in an ecosystem?
a. animals
b. decomposers c. plants
d. temperature
4. What is the term used for the top part of the rain forest?
a. canopy
b. sub canopy
c. floor
d understory
5. What is the main reason for the diminishing rainforest area in the Philippines?
a. climate change
c. dynamite fishing
b. deforestation
d. erosion
6. Which is NOT a type of coral reef?
a. atoil
b. barrier reef c fringing reef
d. lagoon
7. What makes up a coral reef?
a. algae b. limestone c. rocks
d. sand
8. Which of these is called the "rainforest of the sea?
a. beach b. coral reefs c. estuary
d. lagoon
9. How can mangrove plants tolerate saltwater?
a. They do not absorb salt water
b. They use salt and water to make food.
c. Their bark is made up of salt-proof material
d. They filter salt from the water using their roots.
10. Which is NOT a function of mangrove roots?
a. filter out salt
b. build up shorelines
c. absorb and store from the water
d. remove impurities and pollutants from water​