Evolutionary important character of Selaginella
Heterosporous nature
rhizophore
strobili
ligule
In a moss, the sporophyte
manufactures food for itself, as well as for the gametophyte
is partially parasitic on the gametophyte
produces gametes that give rise to the gametophyte
arises from a spore produced from the gametophyte
Spore dissemination in some liverworts is aided by
indusium
calyptra
peristome teeth
elaters.
Sexual reproduction involving fusion of two cells in chlamydomonas is
isogamy
homogamy
somatogamy
hologamy.
Ulothrix can be described as a
filamentous algae lacking flagellated reproductive stages
non-motile colonial algae lacking zoospores.
membranous algae producing zoospores
Protonema occurs in the life cycle of
Riccia
Funaria
Anthoceros
Spirogyra.
Which one of the following statements about Cycas is incorrect?
it has circinate vernation
its xylem is mainly composed of xylem vessel
its roots contain some blue-green algae
it does not have a well organized female flower.
In gymnosperms, the pollen chamber represents are formed
a cavity in the ovule in which pollen grains are stored after pollination
an opening in the megagametophyte through which the pollen tube approaches the egg
the microsporangium in which pollen grains develop
a cell in the pollen grain in which the sperms are formed
Chloroplast of Chlamydomonas is
Stellate
Cup-shaped
collar-shaped
spiral
Resin and turpentine are obtained from
Cycas
Pinus
Cedrus
Abies
