Some hyphae are divided into individual cells by cross walls with pores in them. what are these cross walls called? what purpose do the pores serve?

The cross walls are called septa, the pores allow for the movement of ribosomes, mitochondria and even nuclei across the septa.

An autotrophic protist - they can perform photosynthesis and mainly consist of unicellular algae. they can be divided into number of systematic group according to the shape of their cell and the type of photosynthetic pigments they use.

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