-
Microspores are land
plant spores that
develop into male gametophytes,
whereas megaspores develop into
female gametophytes. The male
gametophyte gives...
- A
microsporangium (pl. microsporangia) is a
sporangium that
produces microspores that give rise to male
gametophytes when they germinate. Microsporangia...
- and ****es by the
sporophytes of land plants. The
smaller of these, the
microspore, is male and the
larger megaspore is female.
Heterospory evolved during...
- from
diploid (two sets of chromosomes)
sporophytes and are
divided into
microspores and megaspores; the
precursors to
pollen and
embryo sacs (the gametophyes)...
-
heterosporous plants.
These plants have two
spore types,
megaspores and
microspores.
Generally speaking, the megaspore, or
large spore,
germinates into a...
-
which are heterosporous,
microspores and
megaspores are dis****d from
sporangia either p****ively or by
active ejection.
Microspores produce microgametophytes...
-
diploid microspore mother cells.
These microspore mother cells, also
called microsporocytes, then
undergo meiosis and
become four
microspore haploid cells...
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inner side of the anther, and
synthesis of
callase enzyme to
separate microspore tetrads. Two main
tapetum types are recognised,
secretory (glandular)...
-
produced internally, and the
megaspores (formed
within the ovules) and the
microspores are
involved in the
formation of more
complex structures that form the...
-
extension on the
dorsal side of the anther. A
pollen grain develops from a
microspore in the
microsporangium and
contains the male gametophyte. The size of...
