Question

In a forest ecosystem green plants are
A. Primary producers
B. Consumers
C. Primary consumers
D. Decomposers

Answer 1

Hint: Forest eco system is the functional unit or system. It comprises birds, animals, plants and man. Forest ecosystems have the following type of components. They are productivity, decomposition, energy flow, and nutrient cycling. Forest ecosystem also consists of abiotic and biotic components. The ecosystem is classified into three types. They are temperate, tropical, and boreal. Forest communities have three types. They are producers, decomposers and consumers.

Complete answer:
Option A: Primary producers are also called autotrophs. They get their energy from sunlight and materials from non living materials. Some of the primary producers are green plants, algae, lichens and bacteria. These are performing photosynthesis and getting energy from the sun light. So these are called the primary producers. Option A is correct.
Option B: Consumer is the living species which get energy from different food chains. It can't produce food so it gets food from other sources or makes other species as a food. It has three types. They are herbivores, omnivores and carnivores. Herbivorous plants are an example for consumers. Because consumer types of species are eating vegetables and green plants. Option B is incorrect.
Option C: Primary consumers are called as the organism that eats the producers. Its size is small and it is available in large amounts. Primary consumers are herbivores. Because they eat producers called green plants. Option C is not correct.
Option D: Decomposers are defined by the organism which decomposes both dead animals and plants. Microscopic organisms are the main decomposers in ecosystems like bacteria and protozoa. Examples for the decomposers are fungi, snails, and insects. Option D is incorrect.

Therefore, Option A is the correct answer.

Note:
Producers use the inorganic material for preparing the food. Consumers get the food by eating the primary producers or other living things. Decomposers get the energy by breaking down the dead animal or waste. By this process inorganic material is sent to the environment. So decomposers get the energy through the respiration process. These three classifications come based on the nutrition they get. Decomposers are also called the garbage men of the animal system.