When competition is not intense, natural selection pressures are relieved to some degree and even poorly adapted organisms can reproduce. C. Adaptations to life on land revolve around getting free from water. We will break down the adptations into two catagories but remember, there will be over lap. Notice the zygote is free living in the aquatic environment. Be able to idenify the location of the zygote in each of the four major plant groups which we examine.
Plants use alternation of generations.
You can think your way thorugh it. We will look at the four major plant groups. We will describe them based on the following criteria. Please understand how these criteria illustrate the continuing evolution of plants from the ancestral algal state to the land adapted plants which now dominate the landscape. A.3 areas of emphasis 1.