A) population
B) community
C) ecosystem
D) biome
Correct Answer: C
Solution :
A population is a group of individual organisms of the same species in a given area. A community is a group of populations of different species in a given area. An ecosystem is a whole biotic community in a given area plus its abiotic environment and biome is a maior ecological community of organisms maintained under a particular climate zone. Coral colonies grow continuously in size by budding of polyps and often form extensive masses called coral reefs. Great barrier reef along the North- eastern Australia is an ecosystem. It is about 2000 km long and upto 150 km from shore.
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