What is the immediate result of a plant's egg and sperm combining? a. egg cell b. an zygote c. sperm cells d. spores d?

The answer would be Zygote. A zygote is the initial cell formed when two gamete cells are joined by means of sexual reproduction. In multicellular organisms, it is the earliest developmental stage of the embryo.

Hope I helped. :) 

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.