259437
Dispersal of spores in fern takes place through
1 annulus
2 stomium
3 (a) and (b)
4 indusium
Explanation:
Dispersal of spores in fern takes place through both annulus and stomium. In ferns, sporangium consist of stalk and capsule, later is filled with sporocytes which undergo meiosis to produce haploid spores. The one layered wall of the capsule is thin and has a strip of cells called annulus. The cells of annulus have thickenings on the inner and radial walls or region of dehiscence of a fern sporangium. These regions are called stomium.
AFMC-2005
Plant kingdom
259423
In eusporangiate ferns, sporangium is produced from
1 a single, superficial sporangial initial
2 a group of sporangial initial cells
3 vegetative shoots
4 root mass
Explanation:
In Eusporangiate plants there is an enormous sporangium created from a few beginning cells delivering numerous spores. They divide into two component. The outer cells give rise to the cell wall whereas the sporogenous tissues arise from the inner cell wall. Ex. Lycopodium, Selaginella, Equisetum etc.
AP EAMCET-2011
Plant kingdom
259424
Pteridophytes are called vascular cryptogams, because they are non-seeded plants containing:
1 Xylem and Phloem
2 Only Xylem
3 Only Phloem
4 Neither Xylem nor Phloem
Explanation:
Pteridophytes are vascular plants dispersing spores. They are sometimes referred to as cryptogams as they neither produce seeds nor flowers. Their mode of reproduction is cancelled or hidden. They are containing xylem and phloem. These tissues are together known as vascular bundles.
Karnataka CET-2012
Plant kingdom
259425
Dryopteris differs from Funaria in having:
1 an independent gametophyte
2 an independent sporophyte
3 swimming antherozoids
4 archegonia
Explanation:
Dryopteris differs from Funaria in having an independent sporophyte. Dryopteris is a fern which belongs to pteridophyte and has spore bearing leaves while Funaria is a moss and they lack vascular system.
259437
Dispersal of spores in fern takes place through
1 annulus
2 stomium
3 (a) and (b)
4 indusium
Explanation:
Dispersal of spores in fern takes place through both annulus and stomium. In ferns, sporangium consist of stalk and capsule, later is filled with sporocytes which undergo meiosis to produce haploid spores. The one layered wall of the capsule is thin and has a strip of cells called annulus. The cells of annulus have thickenings on the inner and radial walls or region of dehiscence of a fern sporangium. These regions are called stomium.
AFMC-2005
Plant kingdom
259423
In eusporangiate ferns, sporangium is produced from
1 a single, superficial sporangial initial
2 a group of sporangial initial cells
3 vegetative shoots
4 root mass
Explanation:
In Eusporangiate plants there is an enormous sporangium created from a few beginning cells delivering numerous spores. They divide into two component. The outer cells give rise to the cell wall whereas the sporogenous tissues arise from the inner cell wall. Ex. Lycopodium, Selaginella, Equisetum etc.
AP EAMCET-2011
Plant kingdom
259424
Pteridophytes are called vascular cryptogams, because they are non-seeded plants containing:
1 Xylem and Phloem
2 Only Xylem
3 Only Phloem
4 Neither Xylem nor Phloem
Explanation:
Pteridophytes are vascular plants dispersing spores. They are sometimes referred to as cryptogams as they neither produce seeds nor flowers. Their mode of reproduction is cancelled or hidden. They are containing xylem and phloem. These tissues are together known as vascular bundles.
Karnataka CET-2012
Plant kingdom
259425
Dryopteris differs from Funaria in having:
1 an independent gametophyte
2 an independent sporophyte
3 swimming antherozoids
4 archegonia
Explanation:
Dryopteris differs from Funaria in having an independent sporophyte. Dryopteris is a fern which belongs to pteridophyte and has spore bearing leaves while Funaria is a moss and they lack vascular system.
259437
Dispersal of spores in fern takes place through
1 annulus
2 stomium
3 (a) and (b)
4 indusium
Explanation:
Dispersal of spores in fern takes place through both annulus and stomium. In ferns, sporangium consist of stalk and capsule, later is filled with sporocytes which undergo meiosis to produce haploid spores. The one layered wall of the capsule is thin and has a strip of cells called annulus. The cells of annulus have thickenings on the inner and radial walls or region of dehiscence of a fern sporangium. These regions are called stomium.
AFMC-2005
Plant kingdom
259423
In eusporangiate ferns, sporangium is produced from
1 a single, superficial sporangial initial
2 a group of sporangial initial cells
3 vegetative shoots
4 root mass
Explanation:
In Eusporangiate plants there is an enormous sporangium created from a few beginning cells delivering numerous spores. They divide into two component. The outer cells give rise to the cell wall whereas the sporogenous tissues arise from the inner cell wall. Ex. Lycopodium, Selaginella, Equisetum etc.
AP EAMCET-2011
Plant kingdom
259424
Pteridophytes are called vascular cryptogams, because they are non-seeded plants containing:
1 Xylem and Phloem
2 Only Xylem
3 Only Phloem
4 Neither Xylem nor Phloem
Explanation:
Pteridophytes are vascular plants dispersing spores. They are sometimes referred to as cryptogams as they neither produce seeds nor flowers. Their mode of reproduction is cancelled or hidden. They are containing xylem and phloem. These tissues are together known as vascular bundles.
Karnataka CET-2012
Plant kingdom
259425
Dryopteris differs from Funaria in having:
1 an independent gametophyte
2 an independent sporophyte
3 swimming antherozoids
4 archegonia
Explanation:
Dryopteris differs from Funaria in having an independent sporophyte. Dryopteris is a fern which belongs to pteridophyte and has spore bearing leaves while Funaria is a moss and they lack vascular system.
259437
Dispersal of spores in fern takes place through
1 annulus
2 stomium
3 (a) and (b)
4 indusium
Explanation:
Dispersal of spores in fern takes place through both annulus and stomium. In ferns, sporangium consist of stalk and capsule, later is filled with sporocytes which undergo meiosis to produce haploid spores. The one layered wall of the capsule is thin and has a strip of cells called annulus. The cells of annulus have thickenings on the inner and radial walls or region of dehiscence of a fern sporangium. These regions are called stomium.
AFMC-2005
Plant kingdom
259423
In eusporangiate ferns, sporangium is produced from
1 a single, superficial sporangial initial
2 a group of sporangial initial cells
3 vegetative shoots
4 root mass
Explanation:
In Eusporangiate plants there is an enormous sporangium created from a few beginning cells delivering numerous spores. They divide into two component. The outer cells give rise to the cell wall whereas the sporogenous tissues arise from the inner cell wall. Ex. Lycopodium, Selaginella, Equisetum etc.
AP EAMCET-2011
Plant kingdom
259424
Pteridophytes are called vascular cryptogams, because they are non-seeded plants containing:
1 Xylem and Phloem
2 Only Xylem
3 Only Phloem
4 Neither Xylem nor Phloem
Explanation:
Pteridophytes are vascular plants dispersing spores. They are sometimes referred to as cryptogams as they neither produce seeds nor flowers. Their mode of reproduction is cancelled or hidden. They are containing xylem and phloem. These tissues are together known as vascular bundles.
Karnataka CET-2012
Plant kingdom
259425
Dryopteris differs from Funaria in having:
1 an independent gametophyte
2 an independent sporophyte
3 swimming antherozoids
4 archegonia
Explanation:
Dryopteris differs from Funaria in having an independent sporophyte. Dryopteris is a fern which belongs to pteridophyte and has spore bearing leaves while Funaria is a moss and they lack vascular system.
