Question

Which of the following communities is more vulnerable to invasion by outside animals and plants?
(a) Tropical evergreen forests
(b) Oceanic island communities
(c) Mangroves
(d) Temperate forests

Answer 1

The communities which are more vulnerable to invasion by outside animals and plants include the properties like firstly they always appear green as all the trees do not shed their leaves at the same time or in the same season. Secondly, these communities are dense and the trees are more than 60 m in height.

Complete answer:
The Natural vegetation in India consists of Tropical Evergreen forests as its dominant part. They are mostly tall and hardwood plants containing forests. These forests are dense and multi-layered.
There are a few different plants and animals that exist in harmony with one another for the continual survival of the species in these forests. The co- existing system of plants and animals results in the existence of a biome. A biome is the assortment of all untamed life and plants that coincide in a specific climate characterized by certain topographical limits.

So from the above examples, we can see that the tropical forests have a very rich fauna both in density as well as in varieties. The presence of this high diversity and variety of flora and fauna is due to the suitable conditions in these forests available for them.
They are found in the tropical quarter of the world and they flourish in the areas having more than 200 cm of rainfall and a temperature range of 15 to 30 degrees Celsius. The trees present in the forests are evergreen as there is no period of drought.
The tropical evergreen woodlands are basic in advancing greenery on the planet, yet they are additionally valuable in the nonstop endurance of creatures and plants in the backwoods environment.
Animal Species in Tropical Evergreen Forests: Elephants, Monkeys, Lemur, Deer, One- Horned Rhino (Assam, West Bengal), Birds, etc.
Plant Species in Tropical Evergreen Forest: Ebony, Mahogany, Rosewood, Rubber, Cinchona, etc.
So the correct answer is ‘Tropical evergreen forests’.

Note:
- About 7% of the earth’s surface is occupied by them. In India, the western slopes of the Western Ghats are the regions where evergreen forests are found mostly within the states like Kerala and Karnataka. They're also found in the hills of Jaintia and Khasi.
- An invasive species is often any quiet living organism—an amphibian (like the cane toad) , plant, and animals that are not native to an ecosystem and cause harm.
- It can harm the environment, biodiversity, or even human health. Those species that grow rapidly and spread vigorously and cause harm to other species are called invasive species.