262862
Which of the following process is helpful in hybrid seed production:
1 Embryo rescue
2 Apomixis
3 Polyembryony
4 Somatic hybridisation
Explanation:
Apomixis in flowering plant is defined as the formation of a seed from the maternal tissue of the ovule, avoiding the process of meiosis and fertilization, leading to embryo development. - Apomixis prevents the loss of specific characters in the hybrid. Also, it is a cost effective method for producing seeds.
AIIMS-25.05.2019 Shift-II BHU PMT (Mains)-2009
Sexual Reproduction in Flowering Plants
262870
Cleavage polyembryony occurs in
1 Pinus
2 Mini Cycas
3 Cycas
4 Ephedra
Explanation:
The process by which more than one embryo is developed from a single fertilized egg is called polyembryony. The cleavage polyembryony commonly accurs in the gymnosperms. This is possible because more than one archegonia are fertilized and more than one zygotes are formed. In case of the coniferous plants, all the four cells of the young embryo develop into four embryos. The three wither off and the one completely develops into a new plant. e.g-Pinus.
VMMC-2012 / BCECE-2010 / JIPMER-2009 UP CPMT-2008
Sexual Reproduction in Flowering Plants
262867
Parthenogamy represents the :
1 union of two vegetative nuclei
2 union of two parent hyphae
3 union of two gametes of one sex
4 union of three gametes
Explanation:
Parthenogamy represents the union of two gametes of one sex.
BHU PMT (Mains)-2005
Sexual Reproduction in Flowering Plants
262879
Formation of diploid embryosac from diploid vegetative structure, eg, nucellus or integument etc., without meiosis is called
1 Apospory
2 Apomixis
3 Diplospory
4 Adventive polyembryony
Explanation:
When vegetative cells of sporophyte form an embryo without fertilization, it is called apospore. Adventive polyembryony involve multiple embryos forming from various part of fertilized ovule, such as the nucellus or integument but the meiosis take place. The Male Reproductive System
BCECE-2007
Sexual Reproduction in Flowering Plants
262878
Apomixis is the production of a new plant through
1 Vegetative propagation
2 Apogamy
3 Diplospory
4 All of these
Explanation:
Apomixis is the production of new plant through vegetative propagation, apogany and diplospory. It is a type of asexual reproduction that mimic sexual reproduction. In this method embryo is produced without fertilization. Diplospory is formation of unreduced embryo sac directly from the megaspore mother cell.
262862
Which of the following process is helpful in hybrid seed production:
1 Embryo rescue
2 Apomixis
3 Polyembryony
4 Somatic hybridisation
Explanation:
Apomixis in flowering plant is defined as the formation of a seed from the maternal tissue of the ovule, avoiding the process of meiosis and fertilization, leading to embryo development. - Apomixis prevents the loss of specific characters in the hybrid. Also, it is a cost effective method for producing seeds.
AIIMS-25.05.2019 Shift-II BHU PMT (Mains)-2009
Sexual Reproduction in Flowering Plants
262870
Cleavage polyembryony occurs in
1 Pinus
2 Mini Cycas
3 Cycas
4 Ephedra
Explanation:
The process by which more than one embryo is developed from a single fertilized egg is called polyembryony. The cleavage polyembryony commonly accurs in the gymnosperms. This is possible because more than one archegonia are fertilized and more than one zygotes are formed. In case of the coniferous plants, all the four cells of the young embryo develop into four embryos. The three wither off and the one completely develops into a new plant. e.g-Pinus.
VMMC-2012 / BCECE-2010 / JIPMER-2009 UP CPMT-2008
Sexual Reproduction in Flowering Plants
262867
Parthenogamy represents the :
1 union of two vegetative nuclei
2 union of two parent hyphae
3 union of two gametes of one sex
4 union of three gametes
Explanation:
Parthenogamy represents the union of two gametes of one sex.
BHU PMT (Mains)-2005
Sexual Reproduction in Flowering Plants
262879
Formation of diploid embryosac from diploid vegetative structure, eg, nucellus or integument etc., without meiosis is called
1 Apospory
2 Apomixis
3 Diplospory
4 Adventive polyembryony
Explanation:
When vegetative cells of sporophyte form an embryo without fertilization, it is called apospore. Adventive polyembryony involve multiple embryos forming from various part of fertilized ovule, such as the nucellus or integument but the meiosis take place. The Male Reproductive System
BCECE-2007
Sexual Reproduction in Flowering Plants
262878
Apomixis is the production of a new plant through
1 Vegetative propagation
2 Apogamy
3 Diplospory
4 All of these
Explanation:
Apomixis is the production of new plant through vegetative propagation, apogany and diplospory. It is a type of asexual reproduction that mimic sexual reproduction. In this method embryo is produced without fertilization. Diplospory is formation of unreduced embryo sac directly from the megaspore mother cell.
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Sexual Reproduction in Flowering Plants
262862
Which of the following process is helpful in hybrid seed production:
1 Embryo rescue
2 Apomixis
3 Polyembryony
4 Somatic hybridisation
Explanation:
Apomixis in flowering plant is defined as the formation of a seed from the maternal tissue of the ovule, avoiding the process of meiosis and fertilization, leading to embryo development. - Apomixis prevents the loss of specific characters in the hybrid. Also, it is a cost effective method for producing seeds.
AIIMS-25.05.2019 Shift-II BHU PMT (Mains)-2009
Sexual Reproduction in Flowering Plants
262870
Cleavage polyembryony occurs in
1 Pinus
2 Mini Cycas
3 Cycas
4 Ephedra
Explanation:
The process by which more than one embryo is developed from a single fertilized egg is called polyembryony. The cleavage polyembryony commonly accurs in the gymnosperms. This is possible because more than one archegonia are fertilized and more than one zygotes are formed. In case of the coniferous plants, all the four cells of the young embryo develop into four embryos. The three wither off and the one completely develops into a new plant. e.g-Pinus.
VMMC-2012 / BCECE-2010 / JIPMER-2009 UP CPMT-2008
Sexual Reproduction in Flowering Plants
262867
Parthenogamy represents the :
1 union of two vegetative nuclei
2 union of two parent hyphae
3 union of two gametes of one sex
4 union of three gametes
Explanation:
Parthenogamy represents the union of two gametes of one sex.
BHU PMT (Mains)-2005
Sexual Reproduction in Flowering Plants
262879
Formation of diploid embryosac from diploid vegetative structure, eg, nucellus or integument etc., without meiosis is called
1 Apospory
2 Apomixis
3 Diplospory
4 Adventive polyembryony
Explanation:
When vegetative cells of sporophyte form an embryo without fertilization, it is called apospore. Adventive polyembryony involve multiple embryos forming from various part of fertilized ovule, such as the nucellus or integument but the meiosis take place. The Male Reproductive System
BCECE-2007
Sexual Reproduction in Flowering Plants
262878
Apomixis is the production of a new plant through
1 Vegetative propagation
2 Apogamy
3 Diplospory
4 All of these
Explanation:
Apomixis is the production of new plant through vegetative propagation, apogany and diplospory. It is a type of asexual reproduction that mimic sexual reproduction. In this method embryo is produced without fertilization. Diplospory is formation of unreduced embryo sac directly from the megaspore mother cell.
262862
Which of the following process is helpful in hybrid seed production:
1 Embryo rescue
2 Apomixis
3 Polyembryony
4 Somatic hybridisation
Explanation:
Apomixis in flowering plant is defined as the formation of a seed from the maternal tissue of the ovule, avoiding the process of meiosis and fertilization, leading to embryo development. - Apomixis prevents the loss of specific characters in the hybrid. Also, it is a cost effective method for producing seeds.
AIIMS-25.05.2019 Shift-II BHU PMT (Mains)-2009
Sexual Reproduction in Flowering Plants
262870
Cleavage polyembryony occurs in
1 Pinus
2 Mini Cycas
3 Cycas
4 Ephedra
Explanation:
The process by which more than one embryo is developed from a single fertilized egg is called polyembryony. The cleavage polyembryony commonly accurs in the gymnosperms. This is possible because more than one archegonia are fertilized and more than one zygotes are formed. In case of the coniferous plants, all the four cells of the young embryo develop into four embryos. The three wither off and the one completely develops into a new plant. e.g-Pinus.
VMMC-2012 / BCECE-2010 / JIPMER-2009 UP CPMT-2008
Sexual Reproduction in Flowering Plants
262867
Parthenogamy represents the :
1 union of two vegetative nuclei
2 union of two parent hyphae
3 union of two gametes of one sex
4 union of three gametes
Explanation:
Parthenogamy represents the union of two gametes of one sex.
BHU PMT (Mains)-2005
Sexual Reproduction in Flowering Plants
262879
Formation of diploid embryosac from diploid vegetative structure, eg, nucellus or integument etc., without meiosis is called
1 Apospory
2 Apomixis
3 Diplospory
4 Adventive polyembryony
Explanation:
When vegetative cells of sporophyte form an embryo without fertilization, it is called apospore. Adventive polyembryony involve multiple embryos forming from various part of fertilized ovule, such as the nucellus or integument but the meiosis take place. The Male Reproductive System
BCECE-2007
Sexual Reproduction in Flowering Plants
262878
Apomixis is the production of a new plant through
1 Vegetative propagation
2 Apogamy
3 Diplospory
4 All of these
Explanation:
Apomixis is the production of new plant through vegetative propagation, apogany and diplospory. It is a type of asexual reproduction that mimic sexual reproduction. In this method embryo is produced without fertilization. Diplospory is formation of unreduced embryo sac directly from the megaspore mother cell.
262862
Which of the following process is helpful in hybrid seed production:
1 Embryo rescue
2 Apomixis
3 Polyembryony
4 Somatic hybridisation
Explanation:
Apomixis in flowering plant is defined as the formation of a seed from the maternal tissue of the ovule, avoiding the process of meiosis and fertilization, leading to embryo development. - Apomixis prevents the loss of specific characters in the hybrid. Also, it is a cost effective method for producing seeds.
AIIMS-25.05.2019 Shift-II BHU PMT (Mains)-2009
Sexual Reproduction in Flowering Plants
262870
Cleavage polyembryony occurs in
1 Pinus
2 Mini Cycas
3 Cycas
4 Ephedra
Explanation:
The process by which more than one embryo is developed from a single fertilized egg is called polyembryony. The cleavage polyembryony commonly accurs in the gymnosperms. This is possible because more than one archegonia are fertilized and more than one zygotes are formed. In case of the coniferous plants, all the four cells of the young embryo develop into four embryos. The three wither off and the one completely develops into a new plant. e.g-Pinus.
VMMC-2012 / BCECE-2010 / JIPMER-2009 UP CPMT-2008
Sexual Reproduction in Flowering Plants
262867
Parthenogamy represents the :
1 union of two vegetative nuclei
2 union of two parent hyphae
3 union of two gametes of one sex
4 union of three gametes
Explanation:
Parthenogamy represents the union of two gametes of one sex.
BHU PMT (Mains)-2005
Sexual Reproduction in Flowering Plants
262879
Formation of diploid embryosac from diploid vegetative structure, eg, nucellus or integument etc., without meiosis is called
1 Apospory
2 Apomixis
3 Diplospory
4 Adventive polyembryony
Explanation:
When vegetative cells of sporophyte form an embryo without fertilization, it is called apospore. Adventive polyembryony involve multiple embryos forming from various part of fertilized ovule, such as the nucellus or integument but the meiosis take place. The Male Reproductive System
BCECE-2007
Sexual Reproduction in Flowering Plants
262878
Apomixis is the production of a new plant through
1 Vegetative propagation
2 Apogamy
3 Diplospory
4 All of these
Explanation:
Apomixis is the production of new plant through vegetative propagation, apogany and diplospory. It is a type of asexual reproduction that mimic sexual reproduction. In this method embryo is produced without fertilization. Diplospory is formation of unreduced embryo sac directly from the megaspore mother cell.