Title: Bryophytes structure and reproduction
Headings: 
Sections --"A" Subsection "1"
Sections --"A" Subsections --"2"
Sections --"A" Subsection "3"
Sections --"B" Subsection ---"1"
Section " B" Subsection---"2"
Section "C" Subsection---"1"
Section "C" Subsection---"2"
Section "D" Subsection---"1"
Section "D" Subsection---"2"
16.1. Introduction
Section " A" Subsection---"1"
16.3. Classification of Bryophytes:-
Section " A" Subsection---"2"
16.4. General Characteristics of Bryophyta (Liverworts, Hornworts and Mosses)
16.5. General life cycle of Bryophyta (Liverworts, Hornworts and Mosses:-
Section " A" Subsection---"3"
16.6. Distinguishing Characters of Division- Bryophyta (Mosses) , Division- Marchantiophyta or Hepatophyta (Liverworts) and Division - Anthocerotophyta (Hornworts)
Section " B" Subsection----"1"
Division - Bryophyta (Mosses)
16.8. Gametophyte Characters :-
16.10. Shoot Morphology and Habit :-
Section " B" Subsection---"2"
16.11. Sexual reproduction of Moss :-
Section "C" Subsection---"1"
Division - Hepatophyta (Liverworts)
16.15. General Characteristics of Liverworts :-
16.16. Difference between the gametophytes of thallose and leafy liverworts
Section "C" Subsection---"2"
Section "D" Hornworts (Anthocerophyta) Subsection---"1"
16.21. The hornwort gametophyte :-
Section "D" Subsection---"2"
16.23. Life Cycle:-
Mature Sporophyte :-

Content: Life Cycle of Hornworts (Anthocerophyta)
16.1. Introduction
Section " A" Subsection---"1"
Bryophytes (nonvascular Plants) are the only embryophytes (plants that produce an embryo) whose life history includes a dominant gametophyte  (haploid) stage. They are an ancient and diverse group of non-vascular plants. They comprise three main taxonomic groups: mosses  (Bryophyta), liverworts (Marchantiophyta or Hepatophyta) and hornworts (Anthocerotophyta) which have evolved quite separately. They are not considered to have given rise to the vascular plants but they probably were the earliest land plants (Qui & Palmer, 1999). Like the rest of the land plants, they evolved from green algal ancestors, closely related to the Charophytes. Most bryophytes have erect or creeping stems and tiny leaves, but hornworts and some liverworts have only a flat thallus and no leaves. Worldwide there are possibly 10,000 species of mosses, 7000 liverworts and 200 hornworts. 16.2.