Chapter 25: Seedless Plants

Question 1

Four Major Adaptions that allow plants to live on terrestrial land:

Answer 1

1.) The first adaptation is that the life cycle in all land plants exhibits the alternation of generations, a sporophyte in which the spores are formed and a gametophyte that produces gametes
2.) Second is an apical meristem tissue in roots and shoots
3.) Third is the evolution of a waxy cuticle to resist desiccation (absent from some mosses).
4.) Fourth is lignin in the cell walls to help support structures off the ground

Question 2

Are algae single cellular or multicellular

Answer 2

single cell

Question 3

location of cell division in roots

Answer 3

Apical meristem and root cap

Question 4

location of maturation in roots

Answer 4

root hair, small projection for more surface for more absorption.

Question 5

What is lignin?

Answer 5

Structural support, allows upward growth and increase height of plants overcoming force of gravity. Obtains more sunlight because of growth and increase dispersal distances for spores because of height.

Question 6

two stages of the alternation