Fungi (chapter 14)
!once considered as primitive or degenerate plants without chloroplasts
!molecular evidence suggests fungi are more closely related to animals
!over 70,000 species have been identified
!about 1700 new s
Phylum: Chlorophyta: Green algae (Chapter 15 contd.)!
About 17000 species, very diverse in structure and life history traits.!
Mostly aquatic, but some in snow (Chlamydomonas, Chloromonas), soil
and tree trunks (Trentepohlia).!
Some symbiotic with lichens
Bryophytes: Liverworts, Hornworts and Mosses!
Typical Moss Habitat!
A dryland moss (Tortula obtusissma) on limestone in central Mexico !
Daily Temp -10 to -30C!
Temp may reach 30oC
due to volcanic
Campylopus sp. Moss in Antar
The process of Evolution!
-!The derivation of progressively more complex
forms of life from simple ancestors!
-!A gradual change in phenotypic frequencies that
result in a population of individuals better adapted to
Prokaryotes (chapter 13)!
-! Total weight of prokaryotes in the world is estimated to exceed that of all other
living organisms combined!
-!In the sea: estimated 90% or more of the total weight
!One of the most dramatic innovations in the evolution of
!Principle factor responsible for the dominance of seed
!Seed has great survival value!
!Protection to embr
Cladogram of embryophytes
The bryophytes are grouped into
1- Marchantiophyta (liverworts),
2- Bryophyta (the mosses),
3- Anthocerotophyta (hornworts).
A recent study, involving analyses
of three datasets
Brown Algae: Class Phaeophyceae
almost entirely marine group - dominate rocky shores throughout the
cooler regions of the world
In clear water, brown algae flourish from low- tide level to a d
INTRODUCTION TO PROTISTS
Make their own organic matter by photosynthesis (possess chlorophyll)
Once light energy is trapped into chemical form by photosynthesizers, it becomes
available as an energy source to all other organisms, including the
THIS IS A WORKING LIST
It is estimted therefore, that at present,
the # of identified plant species is:
Non-vascular plants: Mosses, liverworts, hornworts
13,000 Pteridophytes Seedless vascular
I just wanted to begin by introducing you to the plant list website. This is a working list of all
known plant species. It is a collaborative effort by the Royal Botanic Gardens, the Kew and
Missouri Botanical Gardens. This is version 1.1 which supersed