It would be the respiratory system
I believe it is either B or A, personally i'm leaning towards B, but at the same time, i don't think that we would be obtaining materials via pollination, so it then causes A to make more sense.
B. Pine trees, this is the answer that was right after I took the test XD
<span>A gamete needs only half the number of chromosomes because two gametes join together hope his helps you
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