NEET Test Series from KOTA - 10 Papers In MS WORD
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Plant kingdom
259396
If a sporangium is derived from a single cell, it is called
1 Leptosporangiate
2 Eusporangiate
3 Heterosporangiate
4 Monosporangiate
Explanation:
When sporangium is derived from a single cell it is called leptosporangiate. Such sporangia have lesser number of jacket layers and contain lesser number of spores. Example- Azolla, Salvinia
AMU-2005 / Manipal-2004
Plant kingdom
259398
In Selaginella, the adaxial outgrowth, from the base of leaf, is called :
1 ligule
2 velum
3 rhizophore
4 glossopodium
Explanation:
In Selaginella, the adaxial outgrowth, from the base of leaf, is called ligule. It is a minute structure present on the adaxial surface of the leaf. A ligule arises from the base of each leaf (ligulate) as an adaxial outgrowth. They are delicate, green with entire or serrate margin and acute apex. A. Branch B. Leaf with Ligule, C. L.S of Ligule.
BHU PMT (Mains)-2009 / AMU-2005
Plant kingdom
259400
Plant that possess characters like ramenta, archaegonia, circinate
1 Pinus
2 Dryopteris
3 Cycas
4 Funaria
Explanation:
Dryopteris:- It is commonly known as male shield fern. Rhizome represents the modified underground stem. The entire surface of rhizome is covered with persistent leaf base and numerous, thin brown membranous scales called ramenta. Leaves develops the apex of the rhizome in acropetal order. young leaves are circinately coiled (circinate vernation) Archegonia is a female reproductive part of Dryopteris.
AP EAPCET-22.05.2023
Plant kingdom
259402
Identify the pair of heterosporous pteridophytes among the following :
1 Equisetum and Salvinia
2 Lycopodium and Selaginella
3 Selaginella and salvinia
4 psilotum and salvinia
Explanation:
Some pteridophytes are produce two different types of spores such pteridophytes are known as heterosporous and the phenomenon is known as Heterospory. Ex. Selaginella, Salvinia, marsilea, isoets etc. - The development of the female gametophyte starts while the megraspore is still inside the mega sporangium. - Some is true of microspores i.e they also start germinating into male gametophyte white they are still inside microsporangium. - Female gametophyte derives its nourishment from the sporophyte i.e. female gametophyte is depend on sporophyte for its nourishment. - The dependence of female gametophyte on sporophyte for its nourishment provides better starting point for the development of new embryo than an independent green prothallus which was to manufacture its own food.
259396
If a sporangium is derived from a single cell, it is called
1 Leptosporangiate
2 Eusporangiate
3 Heterosporangiate
4 Monosporangiate
Explanation:
When sporangium is derived from a single cell it is called leptosporangiate. Such sporangia have lesser number of jacket layers and contain lesser number of spores. Example- Azolla, Salvinia
AMU-2005 / Manipal-2004
Plant kingdom
259398
In Selaginella, the adaxial outgrowth, from the base of leaf, is called :
1 ligule
2 velum
3 rhizophore
4 glossopodium
Explanation:
In Selaginella, the adaxial outgrowth, from the base of leaf, is called ligule. It is a minute structure present on the adaxial surface of the leaf. A ligule arises from the base of each leaf (ligulate) as an adaxial outgrowth. They are delicate, green with entire or serrate margin and acute apex. A. Branch B. Leaf with Ligule, C. L.S of Ligule.
BHU PMT (Mains)-2009 / AMU-2005
Plant kingdom
259400
Plant that possess characters like ramenta, archaegonia, circinate
1 Pinus
2 Dryopteris
3 Cycas
4 Funaria
Explanation:
Dryopteris:- It is commonly known as male shield fern. Rhizome represents the modified underground stem. The entire surface of rhizome is covered with persistent leaf base and numerous, thin brown membranous scales called ramenta. Leaves develops the apex of the rhizome in acropetal order. young leaves are circinately coiled (circinate vernation) Archegonia is a female reproductive part of Dryopteris.
AP EAPCET-22.05.2023
Plant kingdom
259402
Identify the pair of heterosporous pteridophytes among the following :
1 Equisetum and Salvinia
2 Lycopodium and Selaginella
3 Selaginella and salvinia
4 psilotum and salvinia
Explanation:
Some pteridophytes are produce two different types of spores such pteridophytes are known as heterosporous and the phenomenon is known as Heterospory. Ex. Selaginella, Salvinia, marsilea, isoets etc. - The development of the female gametophyte starts while the megraspore is still inside the mega sporangium. - Some is true of microspores i.e they also start germinating into male gametophyte white they are still inside microsporangium. - Female gametophyte derives its nourishment from the sporophyte i.e. female gametophyte is depend on sporophyte for its nourishment. - The dependence of female gametophyte on sporophyte for its nourishment provides better starting point for the development of new embryo than an independent green prothallus which was to manufacture its own food.
259396
If a sporangium is derived from a single cell, it is called
1 Leptosporangiate
2 Eusporangiate
3 Heterosporangiate
4 Monosporangiate
Explanation:
When sporangium is derived from a single cell it is called leptosporangiate. Such sporangia have lesser number of jacket layers and contain lesser number of spores. Example- Azolla, Salvinia
AMU-2005 / Manipal-2004
Plant kingdom
259398
In Selaginella, the adaxial outgrowth, from the base of leaf, is called :
1 ligule
2 velum
3 rhizophore
4 glossopodium
Explanation:
In Selaginella, the adaxial outgrowth, from the base of leaf, is called ligule. It is a minute structure present on the adaxial surface of the leaf. A ligule arises from the base of each leaf (ligulate) as an adaxial outgrowth. They are delicate, green with entire or serrate margin and acute apex. A. Branch B. Leaf with Ligule, C. L.S of Ligule.
BHU PMT (Mains)-2009 / AMU-2005
Plant kingdom
259400
Plant that possess characters like ramenta, archaegonia, circinate
1 Pinus
2 Dryopteris
3 Cycas
4 Funaria
Explanation:
Dryopteris:- It is commonly known as male shield fern. Rhizome represents the modified underground stem. The entire surface of rhizome is covered with persistent leaf base and numerous, thin brown membranous scales called ramenta. Leaves develops the apex of the rhizome in acropetal order. young leaves are circinately coiled (circinate vernation) Archegonia is a female reproductive part of Dryopteris.
AP EAPCET-22.05.2023
Plant kingdom
259402
Identify the pair of heterosporous pteridophytes among the following :
1 Equisetum and Salvinia
2 Lycopodium and Selaginella
3 Selaginella and salvinia
4 psilotum and salvinia
Explanation:
Some pteridophytes are produce two different types of spores such pteridophytes are known as heterosporous and the phenomenon is known as Heterospory. Ex. Selaginella, Salvinia, marsilea, isoets etc. - The development of the female gametophyte starts while the megraspore is still inside the mega sporangium. - Some is true of microspores i.e they also start germinating into male gametophyte white they are still inside microsporangium. - Female gametophyte derives its nourishment from the sporophyte i.e. female gametophyte is depend on sporophyte for its nourishment. - The dependence of female gametophyte on sporophyte for its nourishment provides better starting point for the development of new embryo than an independent green prothallus which was to manufacture its own food.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Plant kingdom
259396
If a sporangium is derived from a single cell, it is called
1 Leptosporangiate
2 Eusporangiate
3 Heterosporangiate
4 Monosporangiate
Explanation:
When sporangium is derived from a single cell it is called leptosporangiate. Such sporangia have lesser number of jacket layers and contain lesser number of spores. Example- Azolla, Salvinia
AMU-2005 / Manipal-2004
Plant kingdom
259398
In Selaginella, the adaxial outgrowth, from the base of leaf, is called :
1 ligule
2 velum
3 rhizophore
4 glossopodium
Explanation:
In Selaginella, the adaxial outgrowth, from the base of leaf, is called ligule. It is a minute structure present on the adaxial surface of the leaf. A ligule arises from the base of each leaf (ligulate) as an adaxial outgrowth. They are delicate, green with entire or serrate margin and acute apex. A. Branch B. Leaf with Ligule, C. L.S of Ligule.
BHU PMT (Mains)-2009 / AMU-2005
Plant kingdom
259400
Plant that possess characters like ramenta, archaegonia, circinate
1 Pinus
2 Dryopteris
3 Cycas
4 Funaria
Explanation:
Dryopteris:- It is commonly known as male shield fern. Rhizome represents the modified underground stem. The entire surface of rhizome is covered with persistent leaf base and numerous, thin brown membranous scales called ramenta. Leaves develops the apex of the rhizome in acropetal order. young leaves are circinately coiled (circinate vernation) Archegonia is a female reproductive part of Dryopteris.
AP EAPCET-22.05.2023
Plant kingdom
259402
Identify the pair of heterosporous pteridophytes among the following :
1 Equisetum and Salvinia
2 Lycopodium and Selaginella
3 Selaginella and salvinia
4 psilotum and salvinia
Explanation:
Some pteridophytes are produce two different types of spores such pteridophytes are known as heterosporous and the phenomenon is known as Heterospory. Ex. Selaginella, Salvinia, marsilea, isoets etc. - The development of the female gametophyte starts while the megraspore is still inside the mega sporangium. - Some is true of microspores i.e they also start germinating into male gametophyte white they are still inside microsporangium. - Female gametophyte derives its nourishment from the sporophyte i.e. female gametophyte is depend on sporophyte for its nourishment. - The dependence of female gametophyte on sporophyte for its nourishment provides better starting point for the development of new embryo than an independent green prothallus which was to manufacture its own food.
