262865
Embryo development from nucellus and integument is known as
1 Apospory
2 Apogamy
3 Apomixis
4 Adventive embryony
Explanation:
Embryo development from nucellus and integument is known as adventives embryony. It is a type of apomixis. In this method nucellus divides and grows into the embryo sac to produce numerous diploid embryos. Apospory is the formation of gametophyte from sporophyte without spore formation or without meiosis. Apogamy is the formation of sporophyte from gametophyte without gamete formation. Apogamy results into the formation of seeds without fertilization.
Manipal-2012 / Uttarakhand-2005
Sexual Reproduction in Flowering Plants
262866
Apogamy is :
1 reproduction of virus
2 failure of fusion of gametes
3 development of bacteria
4 loss of function of reproduction
Explanation:
Apogamy is the formation of sporophyte from gametophyte without gamete formation. Sporophyte usually have the same chromosome number as the gametophyte i.e. haploid. It is common phenomenon in ferns. Ex- Dryopteris, pteris etc.
AMU-2005 / Manipal-2004
Sexual Reproduction in Flowering Plants
262868
The fusion of male and female pronuclear of the gametes is called
1 Fertilization
2 Conjugation
3 Amphimixis
4 Panmixis
Explanation:
Amphimixis is the fusion of pronuclei of sperm and ovum. It is also known as karyogamy. When mature ovum and sperm meet for fusion, then sperm tail and second polar body degenerate. The male and female pronuclei move close to each other for fusion. The nuclear membrane of the pronuclei are broken down and their contents mix up into one mass. Fusion of sperms with egg is known as fertilization which is a part of sexual reproduction.
J and K CET-2009
Sexual Reproduction in Flowering Plants
262869
Absence of sexual union and failure of meiosis is known as:
1 anisospory
2 apomixis
3 amphimixis
4 anisogamety
Explanation:
Absence of sexual union and failure of meiosis is known as apomixis. It is a type of asexual reproduction. In this method, fertilization of egg takes place without fusion of gametes. Amphimixis is the fusion of pronucleus of sperm and egg. It is a type of sexual reproduction. Anisogamy is a type of sexual reproduction in which both male and female gametes are of different shape and sizes. Anisospory is commonally seen in bryophytes.
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Sexual Reproduction in Flowering Plants
262865
Embryo development from nucellus and integument is known as
1 Apospory
2 Apogamy
3 Apomixis
4 Adventive embryony
Explanation:
Embryo development from nucellus and integument is known as adventives embryony. It is a type of apomixis. In this method nucellus divides and grows into the embryo sac to produce numerous diploid embryos. Apospory is the formation of gametophyte from sporophyte without spore formation or without meiosis. Apogamy is the formation of sporophyte from gametophyte without gamete formation. Apogamy results into the formation of seeds without fertilization.
Manipal-2012 / Uttarakhand-2005
Sexual Reproduction in Flowering Plants
262866
Apogamy is :
1 reproduction of virus
2 failure of fusion of gametes
3 development of bacteria
4 loss of function of reproduction
Explanation:
Apogamy is the formation of sporophyte from gametophyte without gamete formation. Sporophyte usually have the same chromosome number as the gametophyte i.e. haploid. It is common phenomenon in ferns. Ex- Dryopteris, pteris etc.
AMU-2005 / Manipal-2004
Sexual Reproduction in Flowering Plants
262868
The fusion of male and female pronuclear of the gametes is called
1 Fertilization
2 Conjugation
3 Amphimixis
4 Panmixis
Explanation:
Amphimixis is the fusion of pronuclei of sperm and ovum. It is also known as karyogamy. When mature ovum and sperm meet for fusion, then sperm tail and second polar body degenerate. The male and female pronuclei move close to each other for fusion. The nuclear membrane of the pronuclei are broken down and their contents mix up into one mass. Fusion of sperms with egg is known as fertilization which is a part of sexual reproduction.
J and K CET-2009
Sexual Reproduction in Flowering Plants
262869
Absence of sexual union and failure of meiosis is known as:
1 anisospory
2 apomixis
3 amphimixis
4 anisogamety
Explanation:
Absence of sexual union and failure of meiosis is known as apomixis. It is a type of asexual reproduction. In this method, fertilization of egg takes place without fusion of gametes. Amphimixis is the fusion of pronucleus of sperm and egg. It is a type of sexual reproduction. Anisogamy is a type of sexual reproduction in which both male and female gametes are of different shape and sizes. Anisospory is commonally seen in bryophytes.
262865
Embryo development from nucellus and integument is known as
1 Apospory
2 Apogamy
3 Apomixis
4 Adventive embryony
Explanation:
Embryo development from nucellus and integument is known as adventives embryony. It is a type of apomixis. In this method nucellus divides and grows into the embryo sac to produce numerous diploid embryos. Apospory is the formation of gametophyte from sporophyte without spore formation or without meiosis. Apogamy is the formation of sporophyte from gametophyte without gamete formation. Apogamy results into the formation of seeds without fertilization.
Manipal-2012 / Uttarakhand-2005
Sexual Reproduction in Flowering Plants
262866
Apogamy is :
1 reproduction of virus
2 failure of fusion of gametes
3 development of bacteria
4 loss of function of reproduction
Explanation:
Apogamy is the formation of sporophyte from gametophyte without gamete formation. Sporophyte usually have the same chromosome number as the gametophyte i.e. haploid. It is common phenomenon in ferns. Ex- Dryopteris, pteris etc.
AMU-2005 / Manipal-2004
Sexual Reproduction in Flowering Plants
262868
The fusion of male and female pronuclear of the gametes is called
1 Fertilization
2 Conjugation
3 Amphimixis
4 Panmixis
Explanation:
Amphimixis is the fusion of pronuclei of sperm and ovum. It is also known as karyogamy. When mature ovum and sperm meet for fusion, then sperm tail and second polar body degenerate. The male and female pronuclei move close to each other for fusion. The nuclear membrane of the pronuclei are broken down and their contents mix up into one mass. Fusion of sperms with egg is known as fertilization which is a part of sexual reproduction.
J and K CET-2009
Sexual Reproduction in Flowering Plants
262869
Absence of sexual union and failure of meiosis is known as:
1 anisospory
2 apomixis
3 amphimixis
4 anisogamety
Explanation:
Absence of sexual union and failure of meiosis is known as apomixis. It is a type of asexual reproduction. In this method, fertilization of egg takes place without fusion of gametes. Amphimixis is the fusion of pronucleus of sperm and egg. It is a type of sexual reproduction. Anisogamy is a type of sexual reproduction in which both male and female gametes are of different shape and sizes. Anisospory is commonally seen in bryophytes.
262865
Embryo development from nucellus and integument is known as
1 Apospory
2 Apogamy
3 Apomixis
4 Adventive embryony
Explanation:
Embryo development from nucellus and integument is known as adventives embryony. It is a type of apomixis. In this method nucellus divides and grows into the embryo sac to produce numerous diploid embryos. Apospory is the formation of gametophyte from sporophyte without spore formation or without meiosis. Apogamy is the formation of sporophyte from gametophyte without gamete formation. Apogamy results into the formation of seeds without fertilization.
Manipal-2012 / Uttarakhand-2005
Sexual Reproduction in Flowering Plants
262866
Apogamy is :
1 reproduction of virus
2 failure of fusion of gametes
3 development of bacteria
4 loss of function of reproduction
Explanation:
Apogamy is the formation of sporophyte from gametophyte without gamete formation. Sporophyte usually have the same chromosome number as the gametophyte i.e. haploid. It is common phenomenon in ferns. Ex- Dryopteris, pteris etc.
AMU-2005 / Manipal-2004
Sexual Reproduction in Flowering Plants
262868
The fusion of male and female pronuclear of the gametes is called
1 Fertilization
2 Conjugation
3 Amphimixis
4 Panmixis
Explanation:
Amphimixis is the fusion of pronuclei of sperm and ovum. It is also known as karyogamy. When mature ovum and sperm meet for fusion, then sperm tail and second polar body degenerate. The male and female pronuclei move close to each other for fusion. The nuclear membrane of the pronuclei are broken down and their contents mix up into one mass. Fusion of sperms with egg is known as fertilization which is a part of sexual reproduction.
J and K CET-2009
Sexual Reproduction in Flowering Plants
262869
Absence of sexual union and failure of meiosis is known as:
1 anisospory
2 apomixis
3 amphimixis
4 anisogamety
Explanation:
Absence of sexual union and failure of meiosis is known as apomixis. It is a type of asexual reproduction. In this method, fertilization of egg takes place without fusion of gametes. Amphimixis is the fusion of pronucleus of sperm and egg. It is a type of sexual reproduction. Anisogamy is a type of sexual reproduction in which both male and female gametes are of different shape and sizes. Anisospory is commonally seen in bryophytes.
