True or False: According to the above phylogeny, Chondrichthyes (sharks, rays, chimaeras) were the first to evolve lungs or lung derivatives.

Which of the following sex and generation combinations directly produces the pollen tube of angiosperms? a) male gametophyteb) female gametophytec) male sporophyted) female sporophyte

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

Adrought killed all the plants in an agricultural farmland. gradually, due to wind and some birds for. nearby areas, new plants started sprouting l. what stage of succession was taking place in the farmland? a) competition b) nudation c) ecesis d) reaction e) migration