Polyp OR Hydranth

Polyp OR Hydranth-
                                        Polyp or hydronth is the nutritive zoid.
                 it is yellowish in colour and has the form of a radially symmetrical hollow soc resembling a  miniature hydra.
                             
                       



so we have to see that the lots of polyp or hydranth....................

             its narrow proximal end is continuous with soenosarks  of hydro kakulas and its digital end is production produced  into the mano-breeium or HYPOSTOM 

which hypostom is surrounded by criclet 

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coelenerata-obelia

obelia                     

          aj hm ap ko coelenerata kai animal obelia kai colony kai baare mai btayege   

             the term zooid is used for an individual form a coelenterate  colony hydroid colony of obelia is dimorphic exhibiting two type of zoids 1 polyp or hydranths or feeding 300 idand 2  gonangium 

                     these two type of zooid differ both form morpholgically as well as physiologically  

                          zooids gr zoon=animal  oid=form 

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PTERIDOPHYTA

aj hm apko botany kingdom kai bare mai btane wali hun aur aj ka topic he- "general account of ptridophyta and classification        

                              pteridophyta   

  pteridophyta jish  mai vascular cryptogams bhhi kaihte hai embryophyta ka main class hai 

                 size and form pteridophyta class ke 

sadsyo me apne size and form me kabphi bhinyta hoti he is class ke kux pothe small size,annuans hote he tatha dusre kux pothe large and perennians hote he is class ke pothe prayah cool,damp shady asdano per ugte hai pteridophyta class ke pothe 2 prkar ke ho skte he 1 to vo jinme stamp small and size aur leave bigger in size hoti he jese parfm me in potho ko mega fellus type khte he dusre ve pothe jinme stamp bigger in size and leave small in size hoti he jese senaginella,equisteum e.t.c ese pothe ko micro fellus pteridophyta class ka purn viksit potha sporophttis hota he tatha yha nischit stamp,leaf and root me bhinn hota he...

STAMP-IN POTHO KA TANA PRAYAH AERIAL KBHI KBHI UNDER GROUND HOTA HE STAMP PPRAYAH HERBACEOUS HOTA HE internal structre sclerenchmatous hypodermis,parenchymetus cortex and middle me stele hoti he.

                                STELE                                     

stele se xyle,phloem hota he protostelic se po ly stelyc conditeions tab ho sakti he..

                                                              LEAF AND ROOT

1LEAF-.INME PATTIYA YA TO SIMPLE ATHWA PINNATELY COMPOUND HOTI HE

2.ROOT-  IS CLASS KE POTHO KI ROOT PRAYAH ADVANTATIUOS HOTI HE  

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