Types of microspore

Types of microspore :-

i) Tetrad antherii) Isobilateral antheriii) Linear tetrad antheriv ) T-shaped antherv) Decussate anthervi) Compound anther :-

Found In asdepiadacae Family , Microspore of an ather lobe remain united with each other & form sac like structure pollirium

@ Microsporangium Structure :-

They are haploid , Minute , Uninucleated, Brown Structure found in many number inside microsporangium formation after meiosis of spore mother Cell
- Outer most layer Called Sporoderm Consist Exine & Intine

- Exine :-

it is outermost layer composed by Sporopollenin ( Organic Chemical polymer which is resistant from oxidation leaching ) Ubish Body

- Intine :-

These Intine consist Pectocellulose
- In Angisperm Exine form From tapetum during Sporogenesis
- In angiosperms Intine form from development of male gametophyte

@ Exine Part :-

i) Sexine
i.i) Endoexine
i.ii) Tactum
ii) Nexine
ii.i) Endexine
ii.ii) Foot layer

@ Palynology :-

Shape, Size Of microspore & Pollen grain. Exine mIcrosculpturing & Number position Character Of aperture Are great taxonomic importance , These are study under separate Branch Called Polynology
- Exine Surface Of Pollen Grain Having Various Pattern of Microsculpturing & Ornamentation Or Discontinues One or more Placed Exine Is Thin Called aperture or Intactate Area through . which pollen tube emerge out at time of germination on stigma