It is already in passive it looks like. Passive is past, and the word “caught” it passive because active would be “catch or catching”
The correct answer here is "cell membrane". Generally it makes sure that nothing enters or leaves the cell, except by its highly guarded "gates", such as ion channels, that let some particles through - but they're very picky about whom to let in!
The single-celled zygote divides by mitosis to produce a multicellular, somatic individual.
Answer: "alga" / "algae" ;
(or, in some cases, "cyanobacterium" / "cyanobacteria").
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<u>Note</u>: This applies to marine lichens—as well as lichens on land.
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