What substances are produced by decomposers to break down plants such as algae

I don't know which step you're asking, but eventually plants will be broken down into carbon dioxide, water, and all sorts of inorganic substances. Inorganics include nitrogen compounds, various inorganic salts (sodium chloride or whatever).

Relatively speaking, there are still relatively few algae plants that play the role of "decomposers" in the ecosystem, and most of them use light energy to assimilate carbon, and some algae can use organic matter such as glucose and glycerol under artificial conditions.

Solution: The composition of the ecosystem is shown in the figure: that is, the biological part of the ecosystem includes producers, consumers and internal decomposers; Bacteria and fungi are able to decompose organic matter in the remains, feces, and litter of animals and plants into simple inorganic substances for plants to reabsorb and utilize, so bacteria and fungi are the decomposers in the ecosystem

Therefore, b

If I'm not mistaken, it's the producer.

C. Test question analysis: Ecosystem refers to a unified whole composed of organisms and the environment in a certain area, the ecosystem includes biological components and abiotic components, biological components include producers, consumers and decomposers, producers mainly refer to green plants, which can produce organic matter through photosynthesis to provide material and energy for themselves and other organisms in the biosphere, and consumers mainly refer to various animals, which play an important role in promoting the material cycle in the biosphere. Decomposers refer to microorganisms such as bacteria and fungi that live in saprophytics, which can decompose organic matter in animal and plant residues into inorganic matter and return it to the inorganic environment, promoting the circulation of substances, so choose C.

1) The biological components of the ecosystem include producers, consumers, and decomposers Producers are able to produce organic matter through photosynthesis to provide material and energy for themselves and other organisms in the biosphere, mainly green plants; Consumers, who directly or indirectly feed on plants and play an important role in promoting the circulation of matter in the biosphere, are animals; Decomposers refer to bacteria and fungi and other saprophytic microorganisms, which can decompose the organic matter in the remains of animals and plants into inorganic matter and return it to the inorganic environment, promoting the circulation of substances Reading the map, it can be seen that the producers in the water ecosystem are algae, and the consumers are small fish, big fish, etc

2) the eat-and-be relationship between consumers and producers forms the food chain; In an ecosystem, many food chains are intertwined to form a food web, and the matter and energy in the ecosystem flow along the food chain and food web In this ecosystem, small fish and algae feed on it, and the relationship between them is eating and being eaten

3) The matter and energy in the ecosystem flow along the food chain and the food web, in the ecosystem, the matter is circulating, and the energy is decreasing step by step in the transmission process along each link of the food chain, and the research proves that one link can only transfer 10% 20% of the energy obtained to the next link

The writing of the food chain: it starts with the producer and ends with the consumer who is not eaten by other animals; The decomposer does not write; The arrow points to the direction of the flow of matter and energy, i.e. the arrow points to the predator One of the food chains in the diagram is: Algae Small Fish Big Fish

So the answer is: (1) Consumer.

2) Eat and be eaten.

3) decreasing step by step; 20%；Algae, small fish, big fish.

The first null is that the consumer is wrong and should be the decomposer.

Animals are the consumers, bacteria and fungi are the decomposers, and the answer is wrong. You're right analyzing.

Because this fungus obtains the photosynthetic products of plants and then provides inorganic salts for plants, it is considered a consumer.

The interspecific relationship is symbiosis.

A earthworm is a decomposer and decomposes organic matter in the soil as inorganic.

Decomposers are not counted in the food chain.

The food chain is the food cycle of the organic world.

While decomposition is the conversion of organic matter into inorganic matter (such as decomposing corpses), sunlight is the form of ability, not organic matter, so it is not counted as a food chain (the food chain is divided into predatory food chain, corrosive food chain, and parasitic food chain).

Food chain can be 2 pcs.

Algae is the first trophic level and man is the highest trophic level.

But generally there are more than 3 and less than 6.

Such food chains are clearest.

Only animals and plants appear in the food chain, and both start with plants. (For junior high school, remember these two points, and then pay attention to the arrow not to be reversed).

Algae are plants. The "algae man" can be counted as a food chain.

It must be at least 3 links: producers--- consumers --- decomposers.

That doesn't count...