What is the dominant phase in the life cycle of a Pterophyte? Is it haploid or diploid? dentify the structure pictured below.

One of the genera of Lycophytes is Selaginella. Like other Lycophytes, Selaginellids bear their spores in a strobilus but they have an unusual strobilus which sets them apart from their relatives. Which answer below best describes this distinction? their spores are always diploid O they are gametophyte-dominant their spores are heterosporous their strobilus is dependnent upon the female gametophyte like mosses

Compare and contrast the following terms: A. Pterophyte and pteridophyte B. Thallophyte and tracheophyte C. Cryptogram and phanerogam

Is the protonema part of the gametophyte or sporophyte generation?

In general where is thesporophyte positioned inrelation to the gametophyte inbryophytes? How does thesporophyte obtain nutrients?

How is annual ring form

How does being a haploid affect the alteration of generations? I do not know if that question makes sense but I am trying to figure out how to explain a fern being a haploid affects the alteration of generations.

In which organisms gametophytic and sporophytic phases are independent?

Match the following clades with the characteristics that they share   Clades: Bryophytes and Tracheophyta                                                                          Embryophyta and Charophycea                                                                    Chlorophyta and Streptophyta                                                                    Bryophytes and Tracheophyta   Characteristics: -Chlorophylls a and b are autotrophic -Alternation of generations -Rosettes in the plasma membrane  -Sporangia with walled spores

A mature sporophyte is: O unicellular O multicellular