Question

the thallus is closely adhered to the substratum (rock substratum and provides a crust like appearance . what does it mean? what does specifically mean by substratum?


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Answer 1

Answer:

thallus is closely adhere to subtratum.the substratum is where the thallus grow ,it's is a rock .Thallus in example

bryophytes is flat and associated closely with rock ..this is its meaning

Explanation:

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