262797
When pollen tube enters through micropyle, the process is called
1 Porogamy
2 Chalazogamy
3 Mesogamy
4 Apogamy
Explanation:
When pollen tube enters through micropyle. The process is called porogamy. When pollen tube grows into the embryo sac with the help of chalaza. It is known as chalazogamy. If the pollen tubes enters the ovule through funiculus, the process is called misogamy.
HP CET-2011 / BHU PMT (Screening)-2009 Uttarakhand PMT-2009 / J and K CET-2008 VMMC-2005 / Rajasthan PMT-2004 AMU-2004 / BCECE-2004 /JCECE-2004 BVP-2003 / Haryana PMT-2003 / AIPMT-1990
Sexual Reproduction in Flowering Plants
262798
The residual persistent nucellus in the seed of black pepper and beet is called
1 Perisperm
2 Endosperm
3 Pericarp
4 Scutellum
5 Apomixis
Explanation:
The residual persistent nucellus in the seed of black pepper and beet is called perisperm. It is a layer of nutritive tissue which surrounds the embryo of seeds. After fertilization, ovary wall convert into fruit wall called pericarp. In double fertilization, one male gamete fuses to with secondary nucleus which form endosperm. Scutellum is the one large shielded cotybdon of a monocot seed. Apomixis is the process of formation of plant from a seed without fertilization.
NEET (Re-Exam)-04.09.2022 Kerala PMT-2015 / AMU-2010
Sexual Reproduction in Flowering Plants
262799
In general, pollen tube enters the ovule through
1 micropyle
2 chalaza
3 hilum
4 funicle
Explanation:
In general, pollen tube enters the ovule through micropyle. This process is known as porogamy. If the pollen tube enters the ovule through funiculus, the phenomenon is known as misogamy. In Chalazogamy, pollen tube enters the ovule through chalaza. Hilum is a scar on mark of attachment with the seed stalk on the outer surface of seed.
J and K CET-2012
Sexual Reproduction in Flowering Plants
262802
If \(\mathrm{Ca}\) of 2 -celled proembryo divides longitudinally and the \(\mathrm{Ca}\) and \(\mathrm{Cb}\) both contribute to the development of embryo, this type of embryogeny would be called as
1 Onagrad type
2 Asterad type
3 Solanad type
4 Both (a) and (b)
Explanation:
If Ca (apical cell) of 2-celled proembryo divides longitudinally and the \(\mathrm{Ca}\) (apical cell) and \(\mathrm{Cb}\) (basal cell) both contribute to the development of embryo, this type of embryogeny is called as Asterad type. Ex- Asteraceae, Violaceae. When basal cell (Cb)) plays a minor role or none in the development of embryo, then this type of embryogeny is called ongrad type, Ex- Brassicaeae etc. When the 2-celled proembryo divides transversely and the basal cell either plays a minor role or no role in its development, then this type of embryogeny is called so land type. Ex- Linaceae, Solanaceae etc.
AMU -2000
Sexual Reproduction in Flowering Plants
262804
What would be the chromosome number of endosperm if it is developed from Oenothera type of embryo sac possessing chromosome number equal to 16 (haploid) ?
1 32 (diploid)
2 48 (triploid)
3 16 (haploid)
4 None of these
Explanation:
The chromosome number of endosperm is 32 (diploid) if it is developed from oenothera type of embryo sac possessing chromosome equal to 16 (haploid). In oenothera type of embryo sac, mature embryo sac is organised in an egg apparatus with a uninucleat central cell. The embryo sac is tetranucleat lacking the antipodals and one of the polar nuclei.
262797
When pollen tube enters through micropyle, the process is called
1 Porogamy
2 Chalazogamy
3 Mesogamy
4 Apogamy
Explanation:
When pollen tube enters through micropyle. The process is called porogamy. When pollen tube grows into the embryo sac with the help of chalaza. It is known as chalazogamy. If the pollen tubes enters the ovule through funiculus, the process is called misogamy.
HP CET-2011 / BHU PMT (Screening)-2009 Uttarakhand PMT-2009 / J and K CET-2008 VMMC-2005 / Rajasthan PMT-2004 AMU-2004 / BCECE-2004 /JCECE-2004 BVP-2003 / Haryana PMT-2003 / AIPMT-1990
Sexual Reproduction in Flowering Plants
262798
The residual persistent nucellus in the seed of black pepper and beet is called
1 Perisperm
2 Endosperm
3 Pericarp
4 Scutellum
5 Apomixis
Explanation:
The residual persistent nucellus in the seed of black pepper and beet is called perisperm. It is a layer of nutritive tissue which surrounds the embryo of seeds. After fertilization, ovary wall convert into fruit wall called pericarp. In double fertilization, one male gamete fuses to with secondary nucleus which form endosperm. Scutellum is the one large shielded cotybdon of a monocot seed. Apomixis is the process of formation of plant from a seed without fertilization.
NEET (Re-Exam)-04.09.2022 Kerala PMT-2015 / AMU-2010
Sexual Reproduction in Flowering Plants
262799
In general, pollen tube enters the ovule through
1 micropyle
2 chalaza
3 hilum
4 funicle
Explanation:
In general, pollen tube enters the ovule through micropyle. This process is known as porogamy. If the pollen tube enters the ovule through funiculus, the phenomenon is known as misogamy. In Chalazogamy, pollen tube enters the ovule through chalaza. Hilum is a scar on mark of attachment with the seed stalk on the outer surface of seed.
J and K CET-2012
Sexual Reproduction in Flowering Plants
262802
If \(\mathrm{Ca}\) of 2 -celled proembryo divides longitudinally and the \(\mathrm{Ca}\) and \(\mathrm{Cb}\) both contribute to the development of embryo, this type of embryogeny would be called as
1 Onagrad type
2 Asterad type
3 Solanad type
4 Both (a) and (b)
Explanation:
If Ca (apical cell) of 2-celled proembryo divides longitudinally and the \(\mathrm{Ca}\) (apical cell) and \(\mathrm{Cb}\) (basal cell) both contribute to the development of embryo, this type of embryogeny is called as Asterad type. Ex- Asteraceae, Violaceae. When basal cell (Cb)) plays a minor role or none in the development of embryo, then this type of embryogeny is called ongrad type, Ex- Brassicaeae etc. When the 2-celled proembryo divides transversely and the basal cell either plays a minor role or no role in its development, then this type of embryogeny is called so land type. Ex- Linaceae, Solanaceae etc.
AMU -2000
Sexual Reproduction in Flowering Plants
262804
What would be the chromosome number of endosperm if it is developed from Oenothera type of embryo sac possessing chromosome number equal to 16 (haploid) ?
1 32 (diploid)
2 48 (triploid)
3 16 (haploid)
4 None of these
Explanation:
The chromosome number of endosperm is 32 (diploid) if it is developed from oenothera type of embryo sac possessing chromosome equal to 16 (haploid). In oenothera type of embryo sac, mature embryo sac is organised in an egg apparatus with a uninucleat central cell. The embryo sac is tetranucleat lacking the antipodals and one of the polar nuclei.
262797
When pollen tube enters through micropyle, the process is called
1 Porogamy
2 Chalazogamy
3 Mesogamy
4 Apogamy
Explanation:
When pollen tube enters through micropyle. The process is called porogamy. When pollen tube grows into the embryo sac with the help of chalaza. It is known as chalazogamy. If the pollen tubes enters the ovule through funiculus, the process is called misogamy.
HP CET-2011 / BHU PMT (Screening)-2009 Uttarakhand PMT-2009 / J and K CET-2008 VMMC-2005 / Rajasthan PMT-2004 AMU-2004 / BCECE-2004 /JCECE-2004 BVP-2003 / Haryana PMT-2003 / AIPMT-1990
Sexual Reproduction in Flowering Plants
262798
The residual persistent nucellus in the seed of black pepper and beet is called
1 Perisperm
2 Endosperm
3 Pericarp
4 Scutellum
5 Apomixis
Explanation:
The residual persistent nucellus in the seed of black pepper and beet is called perisperm. It is a layer of nutritive tissue which surrounds the embryo of seeds. After fertilization, ovary wall convert into fruit wall called pericarp. In double fertilization, one male gamete fuses to with secondary nucleus which form endosperm. Scutellum is the one large shielded cotybdon of a monocot seed. Apomixis is the process of formation of plant from a seed without fertilization.
NEET (Re-Exam)-04.09.2022 Kerala PMT-2015 / AMU-2010
Sexual Reproduction in Flowering Plants
262799
In general, pollen tube enters the ovule through
1 micropyle
2 chalaza
3 hilum
4 funicle
Explanation:
In general, pollen tube enters the ovule through micropyle. This process is known as porogamy. If the pollen tube enters the ovule through funiculus, the phenomenon is known as misogamy. In Chalazogamy, pollen tube enters the ovule through chalaza. Hilum is a scar on mark of attachment with the seed stalk on the outer surface of seed.
J and K CET-2012
Sexual Reproduction in Flowering Plants
262802
If \(\mathrm{Ca}\) of 2 -celled proembryo divides longitudinally and the \(\mathrm{Ca}\) and \(\mathrm{Cb}\) both contribute to the development of embryo, this type of embryogeny would be called as
1 Onagrad type
2 Asterad type
3 Solanad type
4 Both (a) and (b)
Explanation:
If Ca (apical cell) of 2-celled proembryo divides longitudinally and the \(\mathrm{Ca}\) (apical cell) and \(\mathrm{Cb}\) (basal cell) both contribute to the development of embryo, this type of embryogeny is called as Asterad type. Ex- Asteraceae, Violaceae. When basal cell (Cb)) plays a minor role or none in the development of embryo, then this type of embryogeny is called ongrad type, Ex- Brassicaeae etc. When the 2-celled proembryo divides transversely and the basal cell either plays a minor role or no role in its development, then this type of embryogeny is called so land type. Ex- Linaceae, Solanaceae etc.
AMU -2000
Sexual Reproduction in Flowering Plants
262804
What would be the chromosome number of endosperm if it is developed from Oenothera type of embryo sac possessing chromosome number equal to 16 (haploid) ?
1 32 (diploid)
2 48 (triploid)
3 16 (haploid)
4 None of these
Explanation:
The chromosome number of endosperm is 32 (diploid) if it is developed from oenothera type of embryo sac possessing chromosome equal to 16 (haploid). In oenothera type of embryo sac, mature embryo sac is organised in an egg apparatus with a uninucleat central cell. The embryo sac is tetranucleat lacking the antipodals and one of the polar nuclei.
262797
When pollen tube enters through micropyle, the process is called
1 Porogamy
2 Chalazogamy
3 Mesogamy
4 Apogamy
Explanation:
When pollen tube enters through micropyle. The process is called porogamy. When pollen tube grows into the embryo sac with the help of chalaza. It is known as chalazogamy. If the pollen tubes enters the ovule through funiculus, the process is called misogamy.
HP CET-2011 / BHU PMT (Screening)-2009 Uttarakhand PMT-2009 / J and K CET-2008 VMMC-2005 / Rajasthan PMT-2004 AMU-2004 / BCECE-2004 /JCECE-2004 BVP-2003 / Haryana PMT-2003 / AIPMT-1990
Sexual Reproduction in Flowering Plants
262798
The residual persistent nucellus in the seed of black pepper and beet is called
1 Perisperm
2 Endosperm
3 Pericarp
4 Scutellum
5 Apomixis
Explanation:
The residual persistent nucellus in the seed of black pepper and beet is called perisperm. It is a layer of nutritive tissue which surrounds the embryo of seeds. After fertilization, ovary wall convert into fruit wall called pericarp. In double fertilization, one male gamete fuses to with secondary nucleus which form endosperm. Scutellum is the one large shielded cotybdon of a monocot seed. Apomixis is the process of formation of plant from a seed without fertilization.
NEET (Re-Exam)-04.09.2022 Kerala PMT-2015 / AMU-2010
Sexual Reproduction in Flowering Plants
262799
In general, pollen tube enters the ovule through
1 micropyle
2 chalaza
3 hilum
4 funicle
Explanation:
In general, pollen tube enters the ovule through micropyle. This process is known as porogamy. If the pollen tube enters the ovule through funiculus, the phenomenon is known as misogamy. In Chalazogamy, pollen tube enters the ovule through chalaza. Hilum is a scar on mark of attachment with the seed stalk on the outer surface of seed.
J and K CET-2012
Sexual Reproduction in Flowering Plants
262802
If \(\mathrm{Ca}\) of 2 -celled proembryo divides longitudinally and the \(\mathrm{Ca}\) and \(\mathrm{Cb}\) both contribute to the development of embryo, this type of embryogeny would be called as
1 Onagrad type
2 Asterad type
3 Solanad type
4 Both (a) and (b)
Explanation:
If Ca (apical cell) of 2-celled proembryo divides longitudinally and the \(\mathrm{Ca}\) (apical cell) and \(\mathrm{Cb}\) (basal cell) both contribute to the development of embryo, this type of embryogeny is called as Asterad type. Ex- Asteraceae, Violaceae. When basal cell (Cb)) plays a minor role or none in the development of embryo, then this type of embryogeny is called ongrad type, Ex- Brassicaeae etc. When the 2-celled proembryo divides transversely and the basal cell either plays a minor role or no role in its development, then this type of embryogeny is called so land type. Ex- Linaceae, Solanaceae etc.
AMU -2000
Sexual Reproduction in Flowering Plants
262804
What would be the chromosome number of endosperm if it is developed from Oenothera type of embryo sac possessing chromosome number equal to 16 (haploid) ?
1 32 (diploid)
2 48 (triploid)
3 16 (haploid)
4 None of these
Explanation:
The chromosome number of endosperm is 32 (diploid) if it is developed from oenothera type of embryo sac possessing chromosome equal to 16 (haploid). In oenothera type of embryo sac, mature embryo sac is organised in an egg apparatus with a uninucleat central cell. The embryo sac is tetranucleat lacking the antipodals and one of the polar nuclei.
262797
When pollen tube enters through micropyle, the process is called
1 Porogamy
2 Chalazogamy
3 Mesogamy
4 Apogamy
Explanation:
When pollen tube enters through micropyle. The process is called porogamy. When pollen tube grows into the embryo sac with the help of chalaza. It is known as chalazogamy. If the pollen tubes enters the ovule through funiculus, the process is called misogamy.
HP CET-2011 / BHU PMT (Screening)-2009 Uttarakhand PMT-2009 / J and K CET-2008 VMMC-2005 / Rajasthan PMT-2004 AMU-2004 / BCECE-2004 /JCECE-2004 BVP-2003 / Haryana PMT-2003 / AIPMT-1990
Sexual Reproduction in Flowering Plants
262798
The residual persistent nucellus in the seed of black pepper and beet is called
1 Perisperm
2 Endosperm
3 Pericarp
4 Scutellum
5 Apomixis
Explanation:
The residual persistent nucellus in the seed of black pepper and beet is called perisperm. It is a layer of nutritive tissue which surrounds the embryo of seeds. After fertilization, ovary wall convert into fruit wall called pericarp. In double fertilization, one male gamete fuses to with secondary nucleus which form endosperm. Scutellum is the one large shielded cotybdon of a monocot seed. Apomixis is the process of formation of plant from a seed without fertilization.
NEET (Re-Exam)-04.09.2022 Kerala PMT-2015 / AMU-2010
Sexual Reproduction in Flowering Plants
262799
In general, pollen tube enters the ovule through
1 micropyle
2 chalaza
3 hilum
4 funicle
Explanation:
In general, pollen tube enters the ovule through micropyle. This process is known as porogamy. If the pollen tube enters the ovule through funiculus, the phenomenon is known as misogamy. In Chalazogamy, pollen tube enters the ovule through chalaza. Hilum is a scar on mark of attachment with the seed stalk on the outer surface of seed.
J and K CET-2012
Sexual Reproduction in Flowering Plants
262802
If \(\mathrm{Ca}\) of 2 -celled proembryo divides longitudinally and the \(\mathrm{Ca}\) and \(\mathrm{Cb}\) both contribute to the development of embryo, this type of embryogeny would be called as
1 Onagrad type
2 Asterad type
3 Solanad type
4 Both (a) and (b)
Explanation:
If Ca (apical cell) of 2-celled proembryo divides longitudinally and the \(\mathrm{Ca}\) (apical cell) and \(\mathrm{Cb}\) (basal cell) both contribute to the development of embryo, this type of embryogeny is called as Asterad type. Ex- Asteraceae, Violaceae. When basal cell (Cb)) plays a minor role or none in the development of embryo, then this type of embryogeny is called ongrad type, Ex- Brassicaeae etc. When the 2-celled proembryo divides transversely and the basal cell either plays a minor role or no role in its development, then this type of embryogeny is called so land type. Ex- Linaceae, Solanaceae etc.
AMU -2000
Sexual Reproduction in Flowering Plants
262804
What would be the chromosome number of endosperm if it is developed from Oenothera type of embryo sac possessing chromosome number equal to 16 (haploid) ?
1 32 (diploid)
2 48 (triploid)
3 16 (haploid)
4 None of these
Explanation:
The chromosome number of endosperm is 32 (diploid) if it is developed from oenothera type of embryo sac possessing chromosome equal to 16 (haploid). In oenothera type of embryo sac, mature embryo sac is organised in an egg apparatus with a uninucleat central cell. The embryo sac is tetranucleat lacking the antipodals and one of the polar nuclei.
