259500
The young meristematic cells of leaves and stem of gymnosperm has 16 chromosomes, the number of chromosomes in the endosperm of the same gymnosperm shall be:
1 16
2 32
3 24
4 8
Explanation:
The emergence of endosperms on haploid megaspores prior to fertilization is a characteristic features of gymnosperms. Here, the endosperm is gametophytic tissue and is haploid. A gymnospermic stem \& leaves are somatic organs which have diploid chromosome number in its cells. According to question, the no. of chromosomes in leaf is $16(2 n)$ which means the haploid chromosome number is 8 (n). The megaspores, being the product of meiosis in megaspore mother cell $(2 \mathrm{n})$ are haploid \& therefore chromosome number of its endosperm is $n=8$.
MP PMT-2013 / Manipal-2008 BVP-2007 / AIPMT-1996
Plant kingdom
259501
The longest gymnospermic plant is :
1 Sequoiadendron
2 Pinus
3 Cycas
4 Cinchona
Explanation:
Sequoiadendron gigantenum also known as the "giant sequoia" is the largest and sole living species in the genus Sequoiadendron and one of the the species of coniferous trees known as redwoods, classified in the family Cupressaceae. It is known for its massiveness size $(50-85 \mathrm{~m})$. Due to their massive size, the branches at the bottom usually die from being in shade $\&$ are also retained.
NEET-2016 Phase-I / Rajasthan PMT-1999
Plant kingdom
259502
Mycorrhiza is useful association because:
1 it fixes atmospheric nitrogen
2 it enhances absorption of nutrients from soil
3 it kills pathogens
4 it provides resistance against drought
Explanation:
Mycorrhiza are the symbiotic association between roots of higher plants \& fungi. The fungi helps in absorbing water \& nutrients from the soil. Mycorrhiza absorb mineral nutrients especially phosphorus from soil.
CMC Ludhiana-2008 /DUMET-2006]
Plant kingdom
259534
The gymnospermic endosperm differs from an angiospermic endosperm because in gymnosperms it is
1 Haploid and developed from female (a) Haploid and developed from female gametophyte
2 Diploid and developed from female gametophyte
3 Triploid and developed after fertilization
4 Triploid and developed before fertilization
Explanation:
Gymnospermic endosperm differs from angiospermic endosperm because the endosperm in gymnosperm is haploid and developed from female gametophyte but in angiosperms it is post fertilization tissue and is generally triploid in nature.
MHT CET-2015
Plant kingdom
259503
Chilgoza pinus is:
1 Pinus gerardiana
2 Pinus roxburghi
3 Pinus wallichiana
4 Pinus merkurii
Explanation:
Pinus gerardiana is commonly known as chilgoza pine. The trees are tall with usually deep, wide and open crowns with erect branches. The leaves are needle like, in groups of three and spread stiffly. They are glossy green on the outer surface with blue-green stomatal lines on the inner face. Seeds are found with a thin shell and a rudimentary wing.
259500
The young meristematic cells of leaves and stem of gymnosperm has 16 chromosomes, the number of chromosomes in the endosperm of the same gymnosperm shall be:
1 16
2 32
3 24
4 8
Explanation:
The emergence of endosperms on haploid megaspores prior to fertilization is a characteristic features of gymnosperms. Here, the endosperm is gametophytic tissue and is haploid. A gymnospermic stem \& leaves are somatic organs which have diploid chromosome number in its cells. According to question, the no. of chromosomes in leaf is $16(2 n)$ which means the haploid chromosome number is 8 (n). The megaspores, being the product of meiosis in megaspore mother cell $(2 \mathrm{n})$ are haploid \& therefore chromosome number of its endosperm is $n=8$.
MP PMT-2013 / Manipal-2008 BVP-2007 / AIPMT-1996
Plant kingdom
259501
The longest gymnospermic plant is :
1 Sequoiadendron
2 Pinus
3 Cycas
4 Cinchona
Explanation:
Sequoiadendron gigantenum also known as the "giant sequoia" is the largest and sole living species in the genus Sequoiadendron and one of the the species of coniferous trees known as redwoods, classified in the family Cupressaceae. It is known for its massiveness size $(50-85 \mathrm{~m})$. Due to their massive size, the branches at the bottom usually die from being in shade $\&$ are also retained.
NEET-2016 Phase-I / Rajasthan PMT-1999
Plant kingdom
259502
Mycorrhiza is useful association because:
1 it fixes atmospheric nitrogen
2 it enhances absorption of nutrients from soil
3 it kills pathogens
4 it provides resistance against drought
Explanation:
Mycorrhiza are the symbiotic association between roots of higher plants \& fungi. The fungi helps in absorbing water \& nutrients from the soil. Mycorrhiza absorb mineral nutrients especially phosphorus from soil.
CMC Ludhiana-2008 /DUMET-2006]
Plant kingdom
259534
The gymnospermic endosperm differs from an angiospermic endosperm because in gymnosperms it is
1 Haploid and developed from female (a) Haploid and developed from female gametophyte
2 Diploid and developed from female gametophyte
3 Triploid and developed after fertilization
4 Triploid and developed before fertilization
Explanation:
Gymnospermic endosperm differs from angiospermic endosperm because the endosperm in gymnosperm is haploid and developed from female gametophyte but in angiosperms it is post fertilization tissue and is generally triploid in nature.
MHT CET-2015
Plant kingdom
259503
Chilgoza pinus is:
1 Pinus gerardiana
2 Pinus roxburghi
3 Pinus wallichiana
4 Pinus merkurii
Explanation:
Pinus gerardiana is commonly known as chilgoza pine. The trees are tall with usually deep, wide and open crowns with erect branches. The leaves are needle like, in groups of three and spread stiffly. They are glossy green on the outer surface with blue-green stomatal lines on the inner face. Seeds are found with a thin shell and a rudimentary wing.
259500
The young meristematic cells of leaves and stem of gymnosperm has 16 chromosomes, the number of chromosomes in the endosperm of the same gymnosperm shall be:
1 16
2 32
3 24
4 8
Explanation:
The emergence of endosperms on haploid megaspores prior to fertilization is a characteristic features of gymnosperms. Here, the endosperm is gametophytic tissue and is haploid. A gymnospermic stem \& leaves are somatic organs which have diploid chromosome number in its cells. According to question, the no. of chromosomes in leaf is $16(2 n)$ which means the haploid chromosome number is 8 (n). The megaspores, being the product of meiosis in megaspore mother cell $(2 \mathrm{n})$ are haploid \& therefore chromosome number of its endosperm is $n=8$.
MP PMT-2013 / Manipal-2008 BVP-2007 / AIPMT-1996
Plant kingdom
259501
The longest gymnospermic plant is :
1 Sequoiadendron
2 Pinus
3 Cycas
4 Cinchona
Explanation:
Sequoiadendron gigantenum also known as the "giant sequoia" is the largest and sole living species in the genus Sequoiadendron and one of the the species of coniferous trees known as redwoods, classified in the family Cupressaceae. It is known for its massiveness size $(50-85 \mathrm{~m})$. Due to their massive size, the branches at the bottom usually die from being in shade $\&$ are also retained.
NEET-2016 Phase-I / Rajasthan PMT-1999
Plant kingdom
259502
Mycorrhiza is useful association because:
1 it fixes atmospheric nitrogen
2 it enhances absorption of nutrients from soil
3 it kills pathogens
4 it provides resistance against drought
Explanation:
Mycorrhiza are the symbiotic association between roots of higher plants \& fungi. The fungi helps in absorbing water \& nutrients from the soil. Mycorrhiza absorb mineral nutrients especially phosphorus from soil.
CMC Ludhiana-2008 /DUMET-2006]
Plant kingdom
259534
The gymnospermic endosperm differs from an angiospermic endosperm because in gymnosperms it is
1 Haploid and developed from female (a) Haploid and developed from female gametophyte
2 Diploid and developed from female gametophyte
3 Triploid and developed after fertilization
4 Triploid and developed before fertilization
Explanation:
Gymnospermic endosperm differs from angiospermic endosperm because the endosperm in gymnosperm is haploid and developed from female gametophyte but in angiosperms it is post fertilization tissue and is generally triploid in nature.
MHT CET-2015
Plant kingdom
259503
Chilgoza pinus is:
1 Pinus gerardiana
2 Pinus roxburghi
3 Pinus wallichiana
4 Pinus merkurii
Explanation:
Pinus gerardiana is commonly known as chilgoza pine. The trees are tall with usually deep, wide and open crowns with erect branches. The leaves are needle like, in groups of three and spread stiffly. They are glossy green on the outer surface with blue-green stomatal lines on the inner face. Seeds are found with a thin shell and a rudimentary wing.
259500
The young meristematic cells of leaves and stem of gymnosperm has 16 chromosomes, the number of chromosomes in the endosperm of the same gymnosperm shall be:
1 16
2 32
3 24
4 8
Explanation:
The emergence of endosperms on haploid megaspores prior to fertilization is a characteristic features of gymnosperms. Here, the endosperm is gametophytic tissue and is haploid. A gymnospermic stem \& leaves are somatic organs which have diploid chromosome number in its cells. According to question, the no. of chromosomes in leaf is $16(2 n)$ which means the haploid chromosome number is 8 (n). The megaspores, being the product of meiosis in megaspore mother cell $(2 \mathrm{n})$ are haploid \& therefore chromosome number of its endosperm is $n=8$.
MP PMT-2013 / Manipal-2008 BVP-2007 / AIPMT-1996
Plant kingdom
259501
The longest gymnospermic plant is :
1 Sequoiadendron
2 Pinus
3 Cycas
4 Cinchona
Explanation:
Sequoiadendron gigantenum also known as the "giant sequoia" is the largest and sole living species in the genus Sequoiadendron and one of the the species of coniferous trees known as redwoods, classified in the family Cupressaceae. It is known for its massiveness size $(50-85 \mathrm{~m})$. Due to their massive size, the branches at the bottom usually die from being in shade $\&$ are also retained.
NEET-2016 Phase-I / Rajasthan PMT-1999
Plant kingdom
259502
Mycorrhiza is useful association because:
1 it fixes atmospheric nitrogen
2 it enhances absorption of nutrients from soil
3 it kills pathogens
4 it provides resistance against drought
Explanation:
Mycorrhiza are the symbiotic association between roots of higher plants \& fungi. The fungi helps in absorbing water \& nutrients from the soil. Mycorrhiza absorb mineral nutrients especially phosphorus from soil.
CMC Ludhiana-2008 /DUMET-2006]
Plant kingdom
259534
The gymnospermic endosperm differs from an angiospermic endosperm because in gymnosperms it is
1 Haploid and developed from female (a) Haploid and developed from female gametophyte
2 Diploid and developed from female gametophyte
3 Triploid and developed after fertilization
4 Triploid and developed before fertilization
Explanation:
Gymnospermic endosperm differs from angiospermic endosperm because the endosperm in gymnosperm is haploid and developed from female gametophyte but in angiosperms it is post fertilization tissue and is generally triploid in nature.
MHT CET-2015
Plant kingdom
259503
Chilgoza pinus is:
1 Pinus gerardiana
2 Pinus roxburghi
3 Pinus wallichiana
4 Pinus merkurii
Explanation:
Pinus gerardiana is commonly known as chilgoza pine. The trees are tall with usually deep, wide and open crowns with erect branches. The leaves are needle like, in groups of three and spread stiffly. They are glossy green on the outer surface with blue-green stomatal lines on the inner face. Seeds are found with a thin shell and a rudimentary wing.
259500
The young meristematic cells of leaves and stem of gymnosperm has 16 chromosomes, the number of chromosomes in the endosperm of the same gymnosperm shall be:
1 16
2 32
3 24
4 8
Explanation:
The emergence of endosperms on haploid megaspores prior to fertilization is a characteristic features of gymnosperms. Here, the endosperm is gametophytic tissue and is haploid. A gymnospermic stem \& leaves are somatic organs which have diploid chromosome number in its cells. According to question, the no. of chromosomes in leaf is $16(2 n)$ which means the haploid chromosome number is 8 (n). The megaspores, being the product of meiosis in megaspore mother cell $(2 \mathrm{n})$ are haploid \& therefore chromosome number of its endosperm is $n=8$.
MP PMT-2013 / Manipal-2008 BVP-2007 / AIPMT-1996
Plant kingdom
259501
The longest gymnospermic plant is :
1 Sequoiadendron
2 Pinus
3 Cycas
4 Cinchona
Explanation:
Sequoiadendron gigantenum also known as the "giant sequoia" is the largest and sole living species in the genus Sequoiadendron and one of the the species of coniferous trees known as redwoods, classified in the family Cupressaceae. It is known for its massiveness size $(50-85 \mathrm{~m})$. Due to their massive size, the branches at the bottom usually die from being in shade $\&$ are also retained.
NEET-2016 Phase-I / Rajasthan PMT-1999
Plant kingdom
259502
Mycorrhiza is useful association because:
1 it fixes atmospheric nitrogen
2 it enhances absorption of nutrients from soil
3 it kills pathogens
4 it provides resistance against drought
Explanation:
Mycorrhiza are the symbiotic association between roots of higher plants \& fungi. The fungi helps in absorbing water \& nutrients from the soil. Mycorrhiza absorb mineral nutrients especially phosphorus from soil.
CMC Ludhiana-2008 /DUMET-2006]
Plant kingdom
259534
The gymnospermic endosperm differs from an angiospermic endosperm because in gymnosperms it is
1 Haploid and developed from female (a) Haploid and developed from female gametophyte
2 Diploid and developed from female gametophyte
3 Triploid and developed after fertilization
4 Triploid and developed before fertilization
Explanation:
Gymnospermic endosperm differs from angiospermic endosperm because the endosperm in gymnosperm is haploid and developed from female gametophyte but in angiosperms it is post fertilization tissue and is generally triploid in nature.
MHT CET-2015
Plant kingdom
259503
Chilgoza pinus is:
1 Pinus gerardiana
2 Pinus roxburghi
3 Pinus wallichiana
4 Pinus merkurii
Explanation:
Pinus gerardiana is commonly known as chilgoza pine. The trees are tall with usually deep, wide and open crowns with erect branches. The leaves are needle like, in groups of three and spread stiffly. They are glossy green on the outer surface with blue-green stomatal lines on the inner face. Seeds are found with a thin shell and a rudimentary wing.
