259804
Which one of the following event takes place after double fertilization?
1 The pollen grain germinates on the stigma
2 The pollen tubes enter the embryosac
3 Two male gametes are discharged into the embryosac
4 The PEN (Primary Endosperm Nucleus) develops into endosperm
5 The male gamete fuses with egg to form a zygote
Explanation:
After double fertilization, the zygot develops into on embryo (with one or two cotyledons) and the PEN develops in to endosperm which provides nourishment to the developing emberyo. The synergids and antipodal degenerate after fertilisation during these events the ovules develop in to seed and the ovaries develop in to fruit.
Kerala PMT-2012
Plant kingdom
259805
A taxon is observed Himgiri variety which is resistant to hill bunt disease belongs to this taxon. In this taxon, pollen grains lose viability within 30 minutes of their release from anthers. The taxon belongs to the order
1 Poales
2 Sapindales
3 Polemoniales
4 Rosales
Explanation:
Wheat variety Resistant to hill bunt disease is 'HImgiri'. Himgiri is a wheat hybrid that was developed by hybridization and selection for disease resistance and leaf and stripe rust pathogens. It is a disease resistance variety to stripe rust or yellow rust and also hill blunt. Wheat belongs to order 'Poales'.
AP EAMCET-2014
Plant kingdom
259806
Which of the following pairs in angiosperms are diploid and triploid respectively?
1 Secondary nucleus and endosperm
2 Microspore mother cell and egg cell
3 Polar nucleus and secondary nucleus
4 Endosperm and antipodal cells
Explanation:
In an angiosperm the embryo sac is haploid, zygote is diploid and endosperm is triploid (3n) whereas, Nucellus, secondary nucleus and megaspore mother cell (MMC) are diploid (2n).
JCECE-2010
Plant kingdom
259807
Triple fusion in angiosperms is the fusion of second sperm with
1 antipodal cell and one synergid cell
2 two antipodal cells
3 two synergid cells
4 two polar nuclei
Explanation:
Triple fusion in angiosperms is the fusion of second sperm with two polar nuclei. Fusion of second sperm cell with two polar nuclei results in the formation of a diploid zygote.
NEET Test Series from KOTA - 10 Papers In MS WORD
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Plant kingdom
259804
Which one of the following event takes place after double fertilization?
1 The pollen grain germinates on the stigma
2 The pollen tubes enter the embryosac
3 Two male gametes are discharged into the embryosac
4 The PEN (Primary Endosperm Nucleus) develops into endosperm
5 The male gamete fuses with egg to form a zygote
Explanation:
After double fertilization, the zygot develops into on embryo (with one or two cotyledons) and the PEN develops in to endosperm which provides nourishment to the developing emberyo. The synergids and antipodal degenerate after fertilisation during these events the ovules develop in to seed and the ovaries develop in to fruit.
Kerala PMT-2012
Plant kingdom
259805
A taxon is observed Himgiri variety which is resistant to hill bunt disease belongs to this taxon. In this taxon, pollen grains lose viability within 30 minutes of their release from anthers. The taxon belongs to the order
1 Poales
2 Sapindales
3 Polemoniales
4 Rosales
Explanation:
Wheat variety Resistant to hill bunt disease is 'HImgiri'. Himgiri is a wheat hybrid that was developed by hybridization and selection for disease resistance and leaf and stripe rust pathogens. It is a disease resistance variety to stripe rust or yellow rust and also hill blunt. Wheat belongs to order 'Poales'.
AP EAMCET-2014
Plant kingdom
259806
Which of the following pairs in angiosperms are diploid and triploid respectively?
1 Secondary nucleus and endosperm
2 Microspore mother cell and egg cell
3 Polar nucleus and secondary nucleus
4 Endosperm and antipodal cells
Explanation:
In an angiosperm the embryo sac is haploid, zygote is diploid and endosperm is triploid (3n) whereas, Nucellus, secondary nucleus and megaspore mother cell (MMC) are diploid (2n).
JCECE-2010
Plant kingdom
259807
Triple fusion in angiosperms is the fusion of second sperm with
1 antipodal cell and one synergid cell
2 two antipodal cells
3 two synergid cells
4 two polar nuclei
Explanation:
Triple fusion in angiosperms is the fusion of second sperm with two polar nuclei. Fusion of second sperm cell with two polar nuclei results in the formation of a diploid zygote.
259804
Which one of the following event takes place after double fertilization?
1 The pollen grain germinates on the stigma
2 The pollen tubes enter the embryosac
3 Two male gametes are discharged into the embryosac
4 The PEN (Primary Endosperm Nucleus) develops into endosperm
5 The male gamete fuses with egg to form a zygote
Explanation:
After double fertilization, the zygot develops into on embryo (with one or two cotyledons) and the PEN develops in to endosperm which provides nourishment to the developing emberyo. The synergids and antipodal degenerate after fertilisation during these events the ovules develop in to seed and the ovaries develop in to fruit.
Kerala PMT-2012
Plant kingdom
259805
A taxon is observed Himgiri variety which is resistant to hill bunt disease belongs to this taxon. In this taxon, pollen grains lose viability within 30 minutes of their release from anthers. The taxon belongs to the order
1 Poales
2 Sapindales
3 Polemoniales
4 Rosales
Explanation:
Wheat variety Resistant to hill bunt disease is 'HImgiri'. Himgiri is a wheat hybrid that was developed by hybridization and selection for disease resistance and leaf and stripe rust pathogens. It is a disease resistance variety to stripe rust or yellow rust and also hill blunt. Wheat belongs to order 'Poales'.
AP EAMCET-2014
Plant kingdom
259806
Which of the following pairs in angiosperms are diploid and triploid respectively?
1 Secondary nucleus and endosperm
2 Microspore mother cell and egg cell
3 Polar nucleus and secondary nucleus
4 Endosperm and antipodal cells
Explanation:
In an angiosperm the embryo sac is haploid, zygote is diploid and endosperm is triploid (3n) whereas, Nucellus, secondary nucleus and megaspore mother cell (MMC) are diploid (2n).
JCECE-2010
Plant kingdom
259807
Triple fusion in angiosperms is the fusion of second sperm with
1 antipodal cell and one synergid cell
2 two antipodal cells
3 two synergid cells
4 two polar nuclei
Explanation:
Triple fusion in angiosperms is the fusion of second sperm with two polar nuclei. Fusion of second sperm cell with two polar nuclei results in the formation of a diploid zygote.
259804
Which one of the following event takes place after double fertilization?
1 The pollen grain germinates on the stigma
2 The pollen tubes enter the embryosac
3 Two male gametes are discharged into the embryosac
4 The PEN (Primary Endosperm Nucleus) develops into endosperm
5 The male gamete fuses with egg to form a zygote
Explanation:
After double fertilization, the zygot develops into on embryo (with one or two cotyledons) and the PEN develops in to endosperm which provides nourishment to the developing emberyo. The synergids and antipodal degenerate after fertilisation during these events the ovules develop in to seed and the ovaries develop in to fruit.
Kerala PMT-2012
Plant kingdom
259805
A taxon is observed Himgiri variety which is resistant to hill bunt disease belongs to this taxon. In this taxon, pollen grains lose viability within 30 minutes of their release from anthers. The taxon belongs to the order
1 Poales
2 Sapindales
3 Polemoniales
4 Rosales
Explanation:
Wheat variety Resistant to hill bunt disease is 'HImgiri'. Himgiri is a wheat hybrid that was developed by hybridization and selection for disease resistance and leaf and stripe rust pathogens. It is a disease resistance variety to stripe rust or yellow rust and also hill blunt. Wheat belongs to order 'Poales'.
AP EAMCET-2014
Plant kingdom
259806
Which of the following pairs in angiosperms are diploid and triploid respectively?
1 Secondary nucleus and endosperm
2 Microspore mother cell and egg cell
3 Polar nucleus and secondary nucleus
4 Endosperm and antipodal cells
Explanation:
In an angiosperm the embryo sac is haploid, zygote is diploid and endosperm is triploid (3n) whereas, Nucellus, secondary nucleus and megaspore mother cell (MMC) are diploid (2n).
JCECE-2010
Plant kingdom
259807
Triple fusion in angiosperms is the fusion of second sperm with
1 antipodal cell and one synergid cell
2 two antipodal cells
3 two synergid cells
4 two polar nuclei
Explanation:
Triple fusion in angiosperms is the fusion of second sperm with two polar nuclei. Fusion of second sperm cell with two polar nuclei results in the formation of a diploid zygote.