What is the distinctive feature of brown , green and red algae?

2- method of fungi classification

3- Phloem sieve elements are a live while xylem cells ( eg. tracheid) are dead at maturity why?

4- Why do you think that phloem and xylem always run together ( near each other) in plant
5_Draw the 4 phyla of fungi ( Chytridiomycota, Zygomycota, Ascomycota, and Basidiomycota) with its key reproductive feature .

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