Question

Which communities are more vulnerable to invasion by outside plants & animals.

• A. Tropical evergreen forests
• B. Temperate forests
• C. Mangroves
• D. Oceanic Island communities

Answer 1

The correct option is D Oceanic Island communities

Oceanic island communities are more vulnerable to invasion by outside plants & animals. Oceanic islands arise due to volcanic activity or reef growth and usually subside overtime due to erosion and changing sea levels.When islands emerge they undergo the process of ecological succession as species colonize the island. New species arrive via air or water.
Tropical evergreen forest, temperate forest and mangroves are established biomes and hence the invasion by outside plants and animals is rare unless it is through human activity.