II.
Read the following sentences. Encircle the letter of the correct answer.
1. It refers to the movement of surface of the water.
Amount of water b. PH level of water c. temperature d. waves
2. Areas in estuaries which part of the subtidal zone where biodiversity is rich. It provides shelter to
thousands of fish.
Coral reefs
b. mangrove forest
c. rocky shores d. salt marshes
3. Areas in estuary that are filled with mangroves trees.
Coral reefs
b. mangroves forests C. mud flats
d. salt marshes
4. Mud flats are areas in estuaries where
is deposited from the seas or rivers.
a. Mangroves
b. mud
c. plants
d. salt
5. Some animals found in
are starfish, mollusks, shrimp, hermit crab, and prawns.
a. High tide
b. low tide
C. rocky shore
d. salinity
6. An ecosystem is made up of
and
factors in an area.
Abiotic/biotic h hiotic/living c. limiting/carrying d with/without
7. A living organism in an ecosystem is a
a. Abiotic factor b. biotic factor c. community d. population
8. A non-living element in an ecosystem is an
a Abiotic factor b. animal
c. biotic factor d. organism
9. Which of the following is not an abiotic factor?
a. Seaweed
b. sunlight
c. temperature
d. type of soil
10. Which of the following is not a biotic factor?
a. Algae
b. mangrove
c. sea grass
d. waves
a​