259401
Match List-I with List - II. {llll} | List-I | | List-II | |---|---|---| |(A) | Pteropsida | (i) | Psilotum | |(B) | Lycopsida | (ii) | Equisetum | |(C) | Psilopsida | (iii) | Adiantum | |(D) | Sphenopsida | (iv) | Selaginella Choose the correct answer from the options given below:
1 (A)-(ii), (B)-(iii), (C)-(iv), (D)-(i)
2 (A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)
3 (A)-(ii), (B)-(iii), (C)-(i), (D)-(iv)
4 (A)-(iii), (B)-(i), (C)-(iv), (D)-(ii)
Explanation:
Psilopsida (Subdivision) includes living as well as fossil plants, roots are absent, Aerial portion is sparingly or profusely branched. The branching is usually dichotomous type. Ex- Rhynia, Psilotum - Lycopsida includes both fossil and living pteridophytes. The plant body is sporophytic and can be differentiated into root, stem and leaves, Ex-Lycopodium, Selaginella - Sphenopsida, stem in majority of the forms is long jointed or articulated and is ribbed i.e. having ridges and grooves. Ex - Equisetum. - Pteropsida sub-division includes the plants which are commonly known as 'ferns' Ex- Adiantum.
RE-NEET (UG)-06.06.2023 (Manipur)
Plant kingdom
259410
Assertion : Psilotum is living fossil. Reason: Equisetum in heterosporous ptridophyte. The correct answer is
1 Both (A) and (R) are true and (R) is the correct explanation of $(\mathrm{A})$
2 Both (A) and (R) are true and (R) is not the correct explanation of $(\mathrm{A})$
3 (A) is true, but (R) is false
4 (A) is false, but (R) is true.
Explanation:
The whisk fern of the Psilotum species is a living fossil (primitive pteridophyte). Equisetum is a homosporous pteridophyte. Hence, $\mathrm{A}$ is true but $\mathrm{R}$ is false.
AIIMS-26.05.2018 Shift-I
Plant kingdom
259406
Assertion (A) : In evolution the distribution of Bryophytes and Pteridophytes, was limited Reason (R): The need of water for the transportation of male gametes and fertilization limited their distribution The correct option among the following is
1 (A) is true, (R) is true and (R) is the correct explanation for $(\mathrm{A})$
2 (A) is true (R) is true but (R) is not the correct explanation for $(\mathrm{A})$
3 (A) is true but (R) is false
4 (A) is false but (R) is true
Explanation:
Bryophytes and Pteridophytes are limited in distribution and restricted to narrow geographical regions because they need water for the transportation of male gametes and fertilization. They grow in cool, damp and shady places.
TS EAMCET-10.08.2021 Shift-I
Plant kingdom
259416
Ectophloic siphonostele is found in
1 Osmunda and Equisetum
2 Marsilea and Botrychium
3 Adiantum and Cucurbitaceae
4 Dicksonia and Maidenhair fern
Explanation:
Siphonostele are the principle types of steler orgnization in vascular plants. Ectophloic siphonostele a monostele type of siphonostele in which a ring of xylem occurs around the pitch and a ring of pholem outside the xylem. - Siphnosteales are found in the stems of many ferns. - For example- Osmunda and Equisetum. Amphiphloic siphonostele : - In this type of stele xylem is surrounded by phloem.
AIIMS-2008 / AIPMT-2005
Plant kingdom
259422
Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because
1 Embryo develops in female gametophyte which is retained on parent sporophyte
2 Female gametophyte is free and gets dispersed like seeds
3 Female gametophyte lacks archegonia
4 Megaspore possess endosperm and embryo surrounded by seed coat
Explanation:
The most successful method of sexual reproduction is the seed habit found in vascular plants. Selaginella and Salvinia are heterosporous meaning they produce two type of spores- (a) Microspores (small):- Give rise to the male gametophyte. (b) Megaspores (Big):- Give rise to the female gametophyte. Heterospory is essential for seed habit. The female spore germinate within the sporophyte body and thus the germinated female gametophyte derives food and nutrition from the parent sporophyte. This retention of gametophyte inside the sporophyte is a precursor for seed habit. So, Selaginella and Salvinia are an important evolutionary link between pteridophytes and seedproducing plants.
259401
Match List-I with List - II. {llll} | List-I | | List-II | |---|---|---| |(A) | Pteropsida | (i) | Psilotum | |(B) | Lycopsida | (ii) | Equisetum | |(C) | Psilopsida | (iii) | Adiantum | |(D) | Sphenopsida | (iv) | Selaginella Choose the correct answer from the options given below:
1 (A)-(ii), (B)-(iii), (C)-(iv), (D)-(i)
2 (A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)
3 (A)-(ii), (B)-(iii), (C)-(i), (D)-(iv)
4 (A)-(iii), (B)-(i), (C)-(iv), (D)-(ii)
Explanation:
Psilopsida (Subdivision) includes living as well as fossil plants, roots are absent, Aerial portion is sparingly or profusely branched. The branching is usually dichotomous type. Ex- Rhynia, Psilotum - Lycopsida includes both fossil and living pteridophytes. The plant body is sporophytic and can be differentiated into root, stem and leaves, Ex-Lycopodium, Selaginella - Sphenopsida, stem in majority of the forms is long jointed or articulated and is ribbed i.e. having ridges and grooves. Ex - Equisetum. - Pteropsida sub-division includes the plants which are commonly known as 'ferns' Ex- Adiantum.
RE-NEET (UG)-06.06.2023 (Manipur)
Plant kingdom
259410
Assertion : Psilotum is living fossil. Reason: Equisetum in heterosporous ptridophyte. The correct answer is
1 Both (A) and (R) are true and (R) is the correct explanation of $(\mathrm{A})$
2 Both (A) and (R) are true and (R) is not the correct explanation of $(\mathrm{A})$
3 (A) is true, but (R) is false
4 (A) is false, but (R) is true.
Explanation:
The whisk fern of the Psilotum species is a living fossil (primitive pteridophyte). Equisetum is a homosporous pteridophyte. Hence, $\mathrm{A}$ is true but $\mathrm{R}$ is false.
AIIMS-26.05.2018 Shift-I
Plant kingdom
259406
Assertion (A) : In evolution the distribution of Bryophytes and Pteridophytes, was limited Reason (R): The need of water for the transportation of male gametes and fertilization limited their distribution The correct option among the following is
1 (A) is true, (R) is true and (R) is the correct explanation for $(\mathrm{A})$
2 (A) is true (R) is true but (R) is not the correct explanation for $(\mathrm{A})$
3 (A) is true but (R) is false
4 (A) is false but (R) is true
Explanation:
Bryophytes and Pteridophytes are limited in distribution and restricted to narrow geographical regions because they need water for the transportation of male gametes and fertilization. They grow in cool, damp and shady places.
TS EAMCET-10.08.2021 Shift-I
Plant kingdom
259416
Ectophloic siphonostele is found in
1 Osmunda and Equisetum
2 Marsilea and Botrychium
3 Adiantum and Cucurbitaceae
4 Dicksonia and Maidenhair fern
Explanation:
Siphonostele are the principle types of steler orgnization in vascular plants. Ectophloic siphonostele a monostele type of siphonostele in which a ring of xylem occurs around the pitch and a ring of pholem outside the xylem. - Siphnosteales are found in the stems of many ferns. - For example- Osmunda and Equisetum. Amphiphloic siphonostele : - In this type of stele xylem is surrounded by phloem.
AIIMS-2008 / AIPMT-2005
Plant kingdom
259422
Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because
1 Embryo develops in female gametophyte which is retained on parent sporophyte
2 Female gametophyte is free and gets dispersed like seeds
3 Female gametophyte lacks archegonia
4 Megaspore possess endosperm and embryo surrounded by seed coat
Explanation:
The most successful method of sexual reproduction is the seed habit found in vascular plants. Selaginella and Salvinia are heterosporous meaning they produce two type of spores- (a) Microspores (small):- Give rise to the male gametophyte. (b) Megaspores (Big):- Give rise to the female gametophyte. Heterospory is essential for seed habit. The female spore germinate within the sporophyte body and thus the germinated female gametophyte derives food and nutrition from the parent sporophyte. This retention of gametophyte inside the sporophyte is a precursor for seed habit. So, Selaginella and Salvinia are an important evolutionary link between pteridophytes and seedproducing plants.
259401
Match List-I with List - II. {llll} | List-I | | List-II | |---|---|---| |(A) | Pteropsida | (i) | Psilotum | |(B) | Lycopsida | (ii) | Equisetum | |(C) | Psilopsida | (iii) | Adiantum | |(D) | Sphenopsida | (iv) | Selaginella Choose the correct answer from the options given below:
1 (A)-(ii), (B)-(iii), (C)-(iv), (D)-(i)
2 (A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)
3 (A)-(ii), (B)-(iii), (C)-(i), (D)-(iv)
4 (A)-(iii), (B)-(i), (C)-(iv), (D)-(ii)
Explanation:
Psilopsida (Subdivision) includes living as well as fossil plants, roots are absent, Aerial portion is sparingly or profusely branched. The branching is usually dichotomous type. Ex- Rhynia, Psilotum - Lycopsida includes both fossil and living pteridophytes. The plant body is sporophytic and can be differentiated into root, stem and leaves, Ex-Lycopodium, Selaginella - Sphenopsida, stem in majority of the forms is long jointed or articulated and is ribbed i.e. having ridges and grooves. Ex - Equisetum. - Pteropsida sub-division includes the plants which are commonly known as 'ferns' Ex- Adiantum.
RE-NEET (UG)-06.06.2023 (Manipur)
Plant kingdom
259410
Assertion : Psilotum is living fossil. Reason: Equisetum in heterosporous ptridophyte. The correct answer is
1 Both (A) and (R) are true and (R) is the correct explanation of $(\mathrm{A})$
2 Both (A) and (R) are true and (R) is not the correct explanation of $(\mathrm{A})$
3 (A) is true, but (R) is false
4 (A) is false, but (R) is true.
Explanation:
The whisk fern of the Psilotum species is a living fossil (primitive pteridophyte). Equisetum is a homosporous pteridophyte. Hence, $\mathrm{A}$ is true but $\mathrm{R}$ is false.
AIIMS-26.05.2018 Shift-I
Plant kingdom
259406
Assertion (A) : In evolution the distribution of Bryophytes and Pteridophytes, was limited Reason (R): The need of water for the transportation of male gametes and fertilization limited their distribution The correct option among the following is
1 (A) is true, (R) is true and (R) is the correct explanation for $(\mathrm{A})$
2 (A) is true (R) is true but (R) is not the correct explanation for $(\mathrm{A})$
3 (A) is true but (R) is false
4 (A) is false but (R) is true
Explanation:
Bryophytes and Pteridophytes are limited in distribution and restricted to narrow geographical regions because they need water for the transportation of male gametes and fertilization. They grow in cool, damp and shady places.
TS EAMCET-10.08.2021 Shift-I
Plant kingdom
259416
Ectophloic siphonostele is found in
1 Osmunda and Equisetum
2 Marsilea and Botrychium
3 Adiantum and Cucurbitaceae
4 Dicksonia and Maidenhair fern
Explanation:
Siphonostele are the principle types of steler orgnization in vascular plants. Ectophloic siphonostele a monostele type of siphonostele in which a ring of xylem occurs around the pitch and a ring of pholem outside the xylem. - Siphnosteales are found in the stems of many ferns. - For example- Osmunda and Equisetum. Amphiphloic siphonostele : - In this type of stele xylem is surrounded by phloem.
AIIMS-2008 / AIPMT-2005
Plant kingdom
259422
Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because
1 Embryo develops in female gametophyte which is retained on parent sporophyte
2 Female gametophyte is free and gets dispersed like seeds
3 Female gametophyte lacks archegonia
4 Megaspore possess endosperm and embryo surrounded by seed coat
Explanation:
The most successful method of sexual reproduction is the seed habit found in vascular plants. Selaginella and Salvinia are heterosporous meaning they produce two type of spores- (a) Microspores (small):- Give rise to the male gametophyte. (b) Megaspores (Big):- Give rise to the female gametophyte. Heterospory is essential for seed habit. The female spore germinate within the sporophyte body and thus the germinated female gametophyte derives food and nutrition from the parent sporophyte. This retention of gametophyte inside the sporophyte is a precursor for seed habit. So, Selaginella and Salvinia are an important evolutionary link between pteridophytes and seedproducing plants.
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Plant kingdom
259401
Match List-I with List - II. {llll} | List-I | | List-II | |---|---|---| |(A) | Pteropsida | (i) | Psilotum | |(B) | Lycopsida | (ii) | Equisetum | |(C) | Psilopsida | (iii) | Adiantum | |(D) | Sphenopsida | (iv) | Selaginella Choose the correct answer from the options given below:
1 (A)-(ii), (B)-(iii), (C)-(iv), (D)-(i)
2 (A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)
3 (A)-(ii), (B)-(iii), (C)-(i), (D)-(iv)
4 (A)-(iii), (B)-(i), (C)-(iv), (D)-(ii)
Explanation:
Psilopsida (Subdivision) includes living as well as fossil plants, roots are absent, Aerial portion is sparingly or profusely branched. The branching is usually dichotomous type. Ex- Rhynia, Psilotum - Lycopsida includes both fossil and living pteridophytes. The plant body is sporophytic and can be differentiated into root, stem and leaves, Ex-Lycopodium, Selaginella - Sphenopsida, stem in majority of the forms is long jointed or articulated and is ribbed i.e. having ridges and grooves. Ex - Equisetum. - Pteropsida sub-division includes the plants which are commonly known as 'ferns' Ex- Adiantum.
RE-NEET (UG)-06.06.2023 (Manipur)
Plant kingdom
259410
Assertion : Psilotum is living fossil. Reason: Equisetum in heterosporous ptridophyte. The correct answer is
1 Both (A) and (R) are true and (R) is the correct explanation of $(\mathrm{A})$
2 Both (A) and (R) are true and (R) is not the correct explanation of $(\mathrm{A})$
3 (A) is true, but (R) is false
4 (A) is false, but (R) is true.
Explanation:
The whisk fern of the Psilotum species is a living fossil (primitive pteridophyte). Equisetum is a homosporous pteridophyte. Hence, $\mathrm{A}$ is true but $\mathrm{R}$ is false.
AIIMS-26.05.2018 Shift-I
Plant kingdom
259406
Assertion (A) : In evolution the distribution of Bryophytes and Pteridophytes, was limited Reason (R): The need of water for the transportation of male gametes and fertilization limited their distribution The correct option among the following is
1 (A) is true, (R) is true and (R) is the correct explanation for $(\mathrm{A})$
2 (A) is true (R) is true but (R) is not the correct explanation for $(\mathrm{A})$
3 (A) is true but (R) is false
4 (A) is false but (R) is true
Explanation:
Bryophytes and Pteridophytes are limited in distribution and restricted to narrow geographical regions because they need water for the transportation of male gametes and fertilization. They grow in cool, damp and shady places.
TS EAMCET-10.08.2021 Shift-I
Plant kingdom
259416
Ectophloic siphonostele is found in
1 Osmunda and Equisetum
2 Marsilea and Botrychium
3 Adiantum and Cucurbitaceae
4 Dicksonia and Maidenhair fern
Explanation:
Siphonostele are the principle types of steler orgnization in vascular plants. Ectophloic siphonostele a monostele type of siphonostele in which a ring of xylem occurs around the pitch and a ring of pholem outside the xylem. - Siphnosteales are found in the stems of many ferns. - For example- Osmunda and Equisetum. Amphiphloic siphonostele : - In this type of stele xylem is surrounded by phloem.
AIIMS-2008 / AIPMT-2005
Plant kingdom
259422
Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because
1 Embryo develops in female gametophyte which is retained on parent sporophyte
2 Female gametophyte is free and gets dispersed like seeds
3 Female gametophyte lacks archegonia
4 Megaspore possess endosperm and embryo surrounded by seed coat
Explanation:
The most successful method of sexual reproduction is the seed habit found in vascular plants. Selaginella and Salvinia are heterosporous meaning they produce two type of spores- (a) Microspores (small):- Give rise to the male gametophyte. (b) Megaspores (Big):- Give rise to the female gametophyte. Heterospory is essential for seed habit. The female spore germinate within the sporophyte body and thus the germinated female gametophyte derives food and nutrition from the parent sporophyte. This retention of gametophyte inside the sporophyte is a precursor for seed habit. So, Selaginella and Salvinia are an important evolutionary link between pteridophytes and seedproducing plants.
259401
Match List-I with List - II. {llll} | List-I | | List-II | |---|---|---| |(A) | Pteropsida | (i) | Psilotum | |(B) | Lycopsida | (ii) | Equisetum | |(C) | Psilopsida | (iii) | Adiantum | |(D) | Sphenopsida | (iv) | Selaginella Choose the correct answer from the options given below:
1 (A)-(ii), (B)-(iii), (C)-(iv), (D)-(i)
2 (A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)
3 (A)-(ii), (B)-(iii), (C)-(i), (D)-(iv)
4 (A)-(iii), (B)-(i), (C)-(iv), (D)-(ii)
Explanation:
Psilopsida (Subdivision) includes living as well as fossil plants, roots are absent, Aerial portion is sparingly or profusely branched. The branching is usually dichotomous type. Ex- Rhynia, Psilotum - Lycopsida includes both fossil and living pteridophytes. The plant body is sporophytic and can be differentiated into root, stem and leaves, Ex-Lycopodium, Selaginella - Sphenopsida, stem in majority of the forms is long jointed or articulated and is ribbed i.e. having ridges and grooves. Ex - Equisetum. - Pteropsida sub-division includes the plants which are commonly known as 'ferns' Ex- Adiantum.
RE-NEET (UG)-06.06.2023 (Manipur)
Plant kingdom
259410
Assertion : Psilotum is living fossil. Reason: Equisetum in heterosporous ptridophyte. The correct answer is
1 Both (A) and (R) are true and (R) is the correct explanation of $(\mathrm{A})$
2 Both (A) and (R) are true and (R) is not the correct explanation of $(\mathrm{A})$
3 (A) is true, but (R) is false
4 (A) is false, but (R) is true.
Explanation:
The whisk fern of the Psilotum species is a living fossil (primitive pteridophyte). Equisetum is a homosporous pteridophyte. Hence, $\mathrm{A}$ is true but $\mathrm{R}$ is false.
AIIMS-26.05.2018 Shift-I
Plant kingdom
259406
Assertion (A) : In evolution the distribution of Bryophytes and Pteridophytes, was limited Reason (R): The need of water for the transportation of male gametes and fertilization limited their distribution The correct option among the following is
1 (A) is true, (R) is true and (R) is the correct explanation for $(\mathrm{A})$
2 (A) is true (R) is true but (R) is not the correct explanation for $(\mathrm{A})$
3 (A) is true but (R) is false
4 (A) is false but (R) is true
Explanation:
Bryophytes and Pteridophytes are limited in distribution and restricted to narrow geographical regions because they need water for the transportation of male gametes and fertilization. They grow in cool, damp and shady places.
TS EAMCET-10.08.2021 Shift-I
Plant kingdom
259416
Ectophloic siphonostele is found in
1 Osmunda and Equisetum
2 Marsilea and Botrychium
3 Adiantum and Cucurbitaceae
4 Dicksonia and Maidenhair fern
Explanation:
Siphonostele are the principle types of steler orgnization in vascular plants. Ectophloic siphonostele a monostele type of siphonostele in which a ring of xylem occurs around the pitch and a ring of pholem outside the xylem. - Siphnosteales are found in the stems of many ferns. - For example- Osmunda and Equisetum. Amphiphloic siphonostele : - In this type of stele xylem is surrounded by phloem.
AIIMS-2008 / AIPMT-2005
Plant kingdom
259422
Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because
1 Embryo develops in female gametophyte which is retained on parent sporophyte
2 Female gametophyte is free and gets dispersed like seeds
3 Female gametophyte lacks archegonia
4 Megaspore possess endosperm and embryo surrounded by seed coat
Explanation:
The most successful method of sexual reproduction is the seed habit found in vascular plants. Selaginella and Salvinia are heterosporous meaning they produce two type of spores- (a) Microspores (small):- Give rise to the male gametophyte. (b) Megaspores (Big):- Give rise to the female gametophyte. Heterospory is essential for seed habit. The female spore germinate within the sporophyte body and thus the germinated female gametophyte derives food and nutrition from the parent sporophyte. This retention of gametophyte inside the sporophyte is a precursor for seed habit. So, Selaginella and Salvinia are an important evolutionary link between pteridophytes and seedproducing plants.
