Why is pollen needed in plant reproduction?

A. fertilization takes place in the pollen
B. pollen contains the egg cell
C. pollen contains the sperm cell
D. egg cells stick to pollen

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

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cell/ tissue/ organ/ organ system/ body

answerthe above question is correct(true) hope this ;