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
Related Questions
In pteridophytes, phloem is without
Sieve cells
Blast cells
Companion cells
Bast fibres
Antherozoids of Dryopteris are
Multiciliated and coiled
Multiciliated and sickle-shaped
Biciliated and coiled
Biciliated and sickle-shaped
Which of the following has multiflagellate sperms?
Equisetum
Riccia
Lycopodium
Anthoceros
If a sporangium is derived from a single cell, it is called
Leptosporangiate
Eusporangiate
Heterosporangiate
Monosporangiate
Which of the given genera is homosporous ?
Cycas
Pinus
Selaginella
Lycopodium
The leaves in pteridophytes are small as in
Volvox
Marsilia
Selaginella
Azolla
The 13-celled male gametophyte in Selaginella is
12 cells of antheridium + 1 prothallial cell
10 cells of antheridium + 3 prothallial cells
8 cells of antheridium + 2 prothallial cells
None of the above
From an evolutionary perspective, the retention of the female gametophyte with a developing young embryo on the parent sporophyte offers what primary advantage?
Enhanced embryo protection and nutrition
Increased spore dispersal efficiency
Improved gamete fusion rates
Reduced dependence on water for fertilization
In which pteridophyte does the stem have a distinct 'siphonostele' with a central pith surrounded by vascular tissue?
Psilotum
Selaginella
Equisetum
Lycopodium
Horse tails and ferns are belongs to
Gymnosperms
Bryophytes
Mosses
Pteridophytes
