A ncert line is (most fungi are heterotrophic) but when I googled an example for the example of fungi which is not heterotrophic it didn't showed me results. So why here most is written it should be all?

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Hetertrphic mode is of three type holozoic, saprophytic and parasitic but fungi also live in mutualship as lichens and mycorrhiza thus it should be most

in mutualrelatioship it is not feed over algae it is just sharing work

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Heterotrophic Fungi
Fungi are a diverse group of organisms that have unique characteristics. One of the defining features of fungi is their mode of nutrition. Most fungi are heterotrophic, which means they obtain their nutrients by breaking down organic matter in their environment. This includes dead plants, animals, and other organic materials.

Heterotrophic vs. Autotrophic
There are two main categories of nutrition in organisms: heterotrophic and autotrophic. Heterotrophic organisms cannot produce their own food and rely on external sources for nutrients. Autotrophic organisms, on the other hand, are capable of synthesizing their own food through processes like photosynthesis.

Fungi as Heterotrophs
Fungi are classified as heterotrophs because they lack the ability to produce their own food through photosynthesis. Instead, they obtain nutrients by secreting enzymes that break down complex organic compounds into simpler molecules. These molecules are then absorbed by the fungi, providing them with energy and essential nutrients.

Exceptions to the Rule
While it is true that most fungi are heterotrophic, there are some exceptions to this generalization. These exceptions can be categorized into three groups:

1. Mutualistic Fungi: Some fungi form mutualistic relationships with other organisms, such as plants or algae. In these relationships, the fungi provide essential nutrients to their partners in exchange for carbohydrates or other compounds. This mutualistic association allows the fungi to obtain some of their nutrients from an autotrophic source.

2. Mixotrophic Fungi: Mixotrophic fungi have the ability to switch between heterotrophic and autotrophic modes of nutrition. They can use photosynthesis to produce their own food when light is available, but they also have the capability to obtain nutrients from organic matter when needed.

3. Lichens: Lichens are composite organisms formed by the symbiotic association between fungi and algae or cyanobacteria. The fungi in lichens provide a protective environment for the photosynthetic partners, allowing them to carry out photosynthesis and produce nutrients. In return, the fungi receive organic matter from the photosynthetic partners.

Conclusion
In conclusion, while it is generally true that most fungi are heterotrophic, there are exceptions to this rule. Some fungi have evolved mutualistic relationships or have the ability to switch between heterotrophic and autotrophic modes of nutrition. Lichens, which are composite organisms, also challenge the notion that all fungi are heterotrophic. These exceptions highlight the complexity and diversity of the fungal kingdom.

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