What process produces the 2n sporophyte in the moss life cycle

What is the difference between a scientific hypotheses and a scientific theory?

Parthenogenesis is a type of reproduction that does not require a mate. it’s rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.

Me.henley said, “in the rat race we call life, only the strong will survive.” he may have been referring to