Unit 2 Bryophyta and Pteridophyta Flashcards
The simplest and most primitive green terrestrial plants are
Bryophyta
They are found in shady areas
What are the body divisions of bryophyta and their function
Rhizoid - used for water and nutrient absorption
Aerial green portion either thalloid or leafy
Bryophyta are divided into
Class hepaticae
Class anthocerotae
Class musci
The most primitive byrophyte with a flat ribbon like green thallus in which gametes and sporangium are embedded is
Class hepaticae
Which bryophyte has the simplest gametophyte
Anthocerotae
The gametophyte of class musci is
Upright or prostate
Marked advancement in plant differentiation and evolution is seen in
Class musci
Vascular systems for transport in plant was first seen in
Pteridophyta
Sporophyte is the dominant generation in
Pteridophyta
Which generation is dominant in bryophyta
Gametophyte
Pteridophyta are divided into _____
5
Class Rhyniopsida
Class psilopsida
Class lycopsida
Class sphenopsida
Class pteridopsida
Extinct Class of pteridophytes is
Class rhyniopsida
True ferns are also known as
Pteridopsida
Which class of Pteridophyta has no root and its rhizoids are always associated with a fungus
Class psilopsida
Spores of psilopsida are
Homosphorous
Which division of Pteridophyta is represented by three families with one genus each
Class lycophyta
Both homosphory and heterosphory occur in
Lycopsida
The vascular system of _____ resembles that of angiosperms
Lycophyta
Class sphenopsida are represented by a single family ____
Equisetaceae with single genus equisetum(horsetails)
Equisetum arvense grows in
Dry habitat
What are scouring rushes
Species of equisetum having silica in the epidermis of their stems formerly used to scrub pots and pans
______ has distinct nodes and internodes
Equisetum
Photosynthesis in equisetum is carried out by
Green stems
Present day species of equisetum are
Homosphorous
