How are the male and female gametophytes of pteridophytes and gymnosperms different from each other?

Open in App

Solution

The male and female gametophytes of pteridophytes and gymnosperms different from each other are

$\begin{matrix} Male Gametophyte of Pteridophyte & Male Gametophyte of Gymnosperm A d i s t i n c t m a l e g a m e t o p h y t e m a y n o t b e & A m a l e g a m e t o p h y t e i s a l w a y s p r e s e n t . p r e s e n t . i t c o n t a i n s a n a n t h e r i d i u m . & A n a n t h e r i d i u m i s n o t f o u n d . M a l e g a m e t e s a r e f l a g e l l a t e d . & M a l e g a m e t e s m a y o r m a y n o t b e f l a g e l l a t e d . M a l e g a m e t e s r e a c h t h e f e m a l e g a m e t e & M a l e g a m e t e s r e a c h t h e f e m a l e g a m e t e b y s w i m m i n g i n a f i l m o f w a t e r . & t h r o u g h a p o l l e n t u b e . W a t e r i s n o t r e q u i r e d . \end{matrix}$

$\begin{matrix} Female Gametophyte of Pteridophyte & Female Gametophyte of Gymnosperm A d i s t i n c t f e m a l e g a m e t o p h y t e m a y o r & A d i s t i n c t g a m e t o p h y t e i s a l w a y s p r e s e n t . m a y n o t b e p r e s e n t . I t i s l a r g e l y i n d e p e n d e n t . & F e m a l e g a m e t o p h y t e d o e s n o t l e a v e t h e p a r e n t p l a n t . I t i s n o t e n c l o s e d i s a n o v u l e . & I t i s e n c l o s e d i n s i d e a n o v u l e . \end{matrix}$

Suggest Corrections

Similar questions

Q. Unlike bryophyte and pteridophyte, in gymnosperms male and female gametophytes

Q. Assertion :In gymnosperms, the male and female gametophytes do not have independent existence. Reason: They remain within the sporangia retained on the sporophyte.

Q. Consider the following statements regarding gymnosperms.

(A) In gymnosperms, the male and female gametophytes have an independent existence.
(B) The multicellular female gametophyte is retained within the megasporangium.
(C) The gymnosperms are heterosporous.

The male and female reproductive organs of several pteridophytes and gymnosperms are comparable to floral structures of angiosperms. Make an attempt to compare the various reproductive parts of pteridophytes and gymnosperms with reprodutive structures of angiosperms.

Q. Read the following five statements ( A to E ) and select the option with all correct statements.

(A) Mosses and Lichens are the first organisms to colonize bare rock.
(B) Selaginella is a homosporous pteridophyte.
(C) Coralloid roots in Cycas have VAM.
(D) The main plant body in bryophytes is gametophytic whereas in pteridophytes it is sporophytic.
(E) In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte.

Join BYJU'S Learning Program