The development of the suspensor in Selaginella is attributed to which part of the embryo?
Epibasal tier
Hypobasal tier
Both epibasal and hypobasal tiers
The megaspore itself
Related Questions
Dispersal of spores in fern takes place through
Annulus
Stomium
Both (a) and (b)
Indusium
Fern gametophyte shows …… nature.
Homothallic
Fragmentation
Heterothallic
None of these
Rhizoids are absent in
Pteridophytes
Bryophytes
Funeria
Liverworts
From evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in
Liverworts
Mosses
Pteridophytes
Gymnosperms
Two very distinst generations are found in the life cycle of
Bacteria
Spirogyra
Volvox
Ferns
The leaves in pteridophytes are small as in
Volvox
Marsilia
Selaginella
Azolla
In which pteridophyte does the stem have a distinct 'siphonostele' with a central pith surrounded by vascular tissue?
Psilotum
Selaginella
Equisetum
Lycopodium
Choose the wrong combination
Gymnosperms - Siphonogamous Oogamy
Angiosperms- Siphonogamous Oogamy
Pteridophytes - Zooidogamous Oogamy
Bryophyte - Siphonogamous Oogamy
In pteridophytes, phloem is without
Sieve cells
Blast cells
Companion cells
Bast fibres
Read carefully the following statements about pteridophytes
I. They are called vascular cryptogams
II. They produce spores rather than seeds
IIII. They are used for medicinal purposes
IV. They are used as soil binders
V. They are frequently grown as ornaments
Which of the statements given above are correct?
I, II and V
II, IV and V
II, III, IV and V
I, II, III, IV and V
