Both the 3’ carbon and 5’ carbon act in forming the phosphodiester linkages.
Vegetative reproduction is a type of asexual reproduction in which an individual is reproduced from vegetative parts such as leaf, stem etc. while seed contain inactive embryo which is formed from zygote.
The greenhouse effect traps heat near the surface and raises the temperature, just like a blanket. :)
You should ask your teacher to be sure, but I think that you teacher meant like the mode of transmission.... Like genetically inherited and such.