Q)
(chatquestion)...Why do you think
function of germ po
The exilIU
(c)
Transverse section of a young anther; (b) Enlarged view of one microsporangium called the intine. I
owing wall layers: (c) A mature dehisced anther
cellulose and pec
surrounded by a p
ature it contains
As each cell
microspore te ad. Each one is a potential pollen or microspore mother
cell. The proces of formation of microspores from enollon mother cell (PMC
through meiosis is Cancu osporogenesis. The microspores, as they
yte = follan
ule sorogenous tissue is capable of giving rise to a
cei Figure 2.5b).
reserve and
are formed, are arranged in a cluster of four cells-the microspore tetrad vegetative cell. I
dissociate from each other and develop into pollen grains (Figure 2.3 b). are shed at this
generative con
cell
(Figure 2.3 a). As the anthers mature and dehydrate, the microspores a nucleus. mo
Inside each microsporangium several thousands of microspores or pollen generative co
grains are formed that are released with the dehiscence of anther gametes belore
(Figure 2.3 c).
Pollen grain: The pollen grains represent the male gametophytes. If you
touch the opened anthers of Hibiscus or any other flower you would find
deposition of yellowish powdery pollen graf
Pollen grai
afflictions in
disorders-as
or
...
