Answer: The correct answer is-
- Producer- trees, and algae.
- Consumer- giraffes, whales, and birds.
- Decomposer- mushrooms, earthworms, and bacteria.
Producer, consumer, and decomposer occupy the different trophic levels of a food chain within an ecosystem.
1) Producers are those organisms that synthesize their own food ( autotrophic) by a process called photosynthesis.
Example- Green plants and algae.
2) Consumers are the heterotrophic organisms ( can not synthesize their own food) as they consume other organisms for getting energy.
Example- giraffes, whales, and birds.
3) Decomposers are those organism that obtain energy ( in the form of simple chemical nutrients) by breaking down the dead organic matter of plants and animals.
Example- Earthworm, fungi like mushroom, and bacteria.