Activity 3. Multiple Choice
Encircle the letter of the correct answer.
1. Mangroves are important for these scenarios except
A. slowing coastal erosion
B. making coastal erosion worse
C. sheltering many coastal animals
D. protecting coastal from storm surges
2. Which among the following is considered a predator?
A. Oyster
B. Mudskipper
C. mangrove trees
D. mangrove lizard
3. Which among the following situations show an interaction that exists between a
living and a non-living things in mangrove ecosystem?
A. mutualism between the mangrove trees and the air and water
B. commensalism between barnacles and trunks of mangrove trees
C. predation of some fishes and birds which eat the smaller organisms.
D. commensalism between two different species benefits one without harming the
other.
4. How are swamps being saturated and what are the benefits that it gets?
A. swamps are being saturated through flood, red soil.
B. swamps are being saturated through flood, dark soil.
C. swamps are being saturated through flood, brown soil.
D. swamps are being saturated through flood, unfertilized soil.
5. Which among the situations exhibits commensalism?
A. a mistletoe growing on a mangrove tree.
B. a mangrove which stops residues washed from the land.
C. a competition between Egret and the Buff-banded rail (Tikling).
D. An oysters and barnacles attached to trunks and lower branches of the
mangroves.​