Pteridophytes Flashcards
pteridophytes include
horsetails
ferns
three economical uses of pteridophytes
soil binders
used for medicinal purpose
ornamentals
habitat of pteridophytes
cool, damp, shady places
(some may flourish in sandy-soil conditions)
dominant phase of pteridophytes
sporophyte
small leaves are called
microphylls
microphyll is seen in
selaginella
large leaves are called
macrophylls
macrophylls are seen in
ferns
strobili / cones are seen in
selaginella
equisetum
spores produced by the sporophyte germinate to produce
protallus (gametophyte)
are majority of pteridophytes homosporous or heterosporous
homosporous
which genera are heterosporous
selaginella
salvinia
which event in life of pteridophytes is a precursor to seed habit seen in evolution
development of zygote to embryo takes place within the female gametophyte
four classes of pteridophytes
psilopsida
lycopsida
sphenopsida
pteropsida
example of psilopsida
psilotum
