36 public questions tagged with this topic.
The gametophyte in pteridophytes is a small, free-living structure called prothallus.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Angiosperms and Plant Life Cycles - Alternation of Generations
In pteridophytes, the spore germinates to form the gametophyte (prothallus).
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Angiosperms and Plant Life Cycles - Alternation of Generations
The prothallus, a gametophyte structure in pteridophytes, produces antheridia (male) and archegonia (female).
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Angiosperms and Plant Life Cycles - Alternation of Generations
The prothallus is the inconspicuous, multicellular gametophyte in pteridophytes that bears sex organs.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Angiosperms and Plant Life Cycles - Alternation of Generations
The sporophytes in pteridophytes bear sporangia on leaf-like sporophylls, which produce spores.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Angiosperms and Plant Life Cycles - Alternation of Generations
Heterospory in pteridophytes is a precursor to the seed habit, but seeds are not formed; this occurs in gymnosperms and angiosperms.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Gymnosperms - Characteristics and Life Cycle
Pteridophytes do not produce seeds; seed formation occurs in gymnosperms and angiosperms.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Gymnosperms - Characteristics and Life Cycle
Not all pteridophytes have macrophylls; some, like Selaginella, have small microphylls.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Pteridophytes - Structure and Life Cycle
In pteridophytes, sporangia are borne on leaf-like appendages called sporophylls.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Pteridophytes - Structure and Life Cycle
Pteridophytes require water for the transfer of male gametes (antherozoids) to the female gametophyte (archegonium).
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Pteridophytes - Structure and Life Cycle
The sporophyte in pteridophytes is diploid and dominant, not haploid.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Pteridophytes - Structure and Life Cycle
Psilotum, known as a "living fossil," has a primitive vascular system and is one of the simplest vascular plants.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Pteridophytes - Structure and Life Cycle
