262615
Commelina produces flowers which open and are similar to flowers of other species with exposed anthers and stigma are called A typical angiospermic embryo sac, at maturity contains nuclei and cells
1 Chasmogamous, 7 and 8
2 Xenogamy, 8 and 8
3 Cleistogamous, 7 and 8
4 Chasmogamous, 8 and 7
Explanation:
Commelina produces flowers which open and are similar to flowers of other species with exposed anthers and stigma are called chasmogamous. A typical angiospermic embryo sac, at maturity contains 8 nuclei and 7 celled, comprises 3 -antipodal cells, one central cell and 3-egg apparatus. Egg apparatus comprises one egg and 2-synergid.
TS EAMCET-10.08.2021 Shift-I
Sexual Reproduction in Flowering Plants
262616
If the number of chromosomes in egg cell is 8 , then what is the number of chromosomes in endosperm?
1 24
2 8
3 16
4 12
Explanation:
Exp. A The egg cell lies between the synergid towards the micropyle side. Its wall is more thick than the synergids, it passes micropylar vacuole and chalazal nucleus. Egg cell is haploid, whereas endosperm is triploid as it is formed by fusion of one male gamete with two polar nuclei. Therefore the number of chromosome in endosperm will be \(8 \times 3=24\).
UP CPMT-2011
Sexual Reproduction in Flowering Plants
262617
What is the direction of micropyle in anatropous ovule :-
1 Upward
2 Downward
3 Right
4 Left
Explanation:
The anatropous ovule is inverted i.e. rotated at \(180^{\circ}\) angle and micropyle towards below (down word) and chalaza at upper side, micropyle close to funicle. Funicle runs parallel to the body of ovule. Anatropous ovule found in \(82 \%\) families e.g. malavaceae, solanaceae, cucurbitaceae.
AIPMT-2002
Sexual Reproduction in Flowering Plants
262619
The body of the ovule is fused within the funicle at
1 Micropyle
2 Nucellus
3 Chalaza
4 Hilum
Explanation:
The point of attachment of the funicle with main body of ovule is called helium. - The primary parietal cell divides periclinally and anticlinally to form nucellus. i.e. nucellus well developed and primary sporogenous cell behaves as MMC. - The integument completely surround the nucellus except at the apex where an opening called micropyle usually formed from inner integuments but sometimes form both integuments.
262615
Commelina produces flowers which open and are similar to flowers of other species with exposed anthers and stigma are called A typical angiospermic embryo sac, at maturity contains nuclei and cells
1 Chasmogamous, 7 and 8
2 Xenogamy, 8 and 8
3 Cleistogamous, 7 and 8
4 Chasmogamous, 8 and 7
Explanation:
Commelina produces flowers which open and are similar to flowers of other species with exposed anthers and stigma are called chasmogamous. A typical angiospermic embryo sac, at maturity contains 8 nuclei and 7 celled, comprises 3 -antipodal cells, one central cell and 3-egg apparatus. Egg apparatus comprises one egg and 2-synergid.
TS EAMCET-10.08.2021 Shift-I
Sexual Reproduction in Flowering Plants
262616
If the number of chromosomes in egg cell is 8 , then what is the number of chromosomes in endosperm?
1 24
2 8
3 16
4 12
Explanation:
Exp. A The egg cell lies between the synergid towards the micropyle side. Its wall is more thick than the synergids, it passes micropylar vacuole and chalazal nucleus. Egg cell is haploid, whereas endosperm is triploid as it is formed by fusion of one male gamete with two polar nuclei. Therefore the number of chromosome in endosperm will be \(8 \times 3=24\).
UP CPMT-2011
Sexual Reproduction in Flowering Plants
262617
What is the direction of micropyle in anatropous ovule :-
1 Upward
2 Downward
3 Right
4 Left
Explanation:
The anatropous ovule is inverted i.e. rotated at \(180^{\circ}\) angle and micropyle towards below (down word) and chalaza at upper side, micropyle close to funicle. Funicle runs parallel to the body of ovule. Anatropous ovule found in \(82 \%\) families e.g. malavaceae, solanaceae, cucurbitaceae.
AIPMT-2002
Sexual Reproduction in Flowering Plants
262619
The body of the ovule is fused within the funicle at
1 Micropyle
2 Nucellus
3 Chalaza
4 Hilum
Explanation:
The point of attachment of the funicle with main body of ovule is called helium. - The primary parietal cell divides periclinally and anticlinally to form nucellus. i.e. nucellus well developed and primary sporogenous cell behaves as MMC. - The integument completely surround the nucellus except at the apex where an opening called micropyle usually formed from inner integuments but sometimes form both integuments.
262615
Commelina produces flowers which open and are similar to flowers of other species with exposed anthers and stigma are called A typical angiospermic embryo sac, at maturity contains nuclei and cells
1 Chasmogamous, 7 and 8
2 Xenogamy, 8 and 8
3 Cleistogamous, 7 and 8
4 Chasmogamous, 8 and 7
Explanation:
Commelina produces flowers which open and are similar to flowers of other species with exposed anthers and stigma are called chasmogamous. A typical angiospermic embryo sac, at maturity contains 8 nuclei and 7 celled, comprises 3 -antipodal cells, one central cell and 3-egg apparatus. Egg apparatus comprises one egg and 2-synergid.
TS EAMCET-10.08.2021 Shift-I
Sexual Reproduction in Flowering Plants
262616
If the number of chromosomes in egg cell is 8 , then what is the number of chromosomes in endosperm?
1 24
2 8
3 16
4 12
Explanation:
Exp. A The egg cell lies between the synergid towards the micropyle side. Its wall is more thick than the synergids, it passes micropylar vacuole and chalazal nucleus. Egg cell is haploid, whereas endosperm is triploid as it is formed by fusion of one male gamete with two polar nuclei. Therefore the number of chromosome in endosperm will be \(8 \times 3=24\).
UP CPMT-2011
Sexual Reproduction in Flowering Plants
262617
What is the direction of micropyle in anatropous ovule :-
1 Upward
2 Downward
3 Right
4 Left
Explanation:
The anatropous ovule is inverted i.e. rotated at \(180^{\circ}\) angle and micropyle towards below (down word) and chalaza at upper side, micropyle close to funicle. Funicle runs parallel to the body of ovule. Anatropous ovule found in \(82 \%\) families e.g. malavaceae, solanaceae, cucurbitaceae.
AIPMT-2002
Sexual Reproduction in Flowering Plants
262619
The body of the ovule is fused within the funicle at
1 Micropyle
2 Nucellus
3 Chalaza
4 Hilum
Explanation:
The point of attachment of the funicle with main body of ovule is called helium. - The primary parietal cell divides periclinally and anticlinally to form nucellus. i.e. nucellus well developed and primary sporogenous cell behaves as MMC. - The integument completely surround the nucellus except at the apex where an opening called micropyle usually formed from inner integuments but sometimes form both integuments.
262615
Commelina produces flowers which open and are similar to flowers of other species with exposed anthers and stigma are called A typical angiospermic embryo sac, at maturity contains nuclei and cells
1 Chasmogamous, 7 and 8
2 Xenogamy, 8 and 8
3 Cleistogamous, 7 and 8
4 Chasmogamous, 8 and 7
Explanation:
Commelina produces flowers which open and are similar to flowers of other species with exposed anthers and stigma are called chasmogamous. A typical angiospermic embryo sac, at maturity contains 8 nuclei and 7 celled, comprises 3 -antipodal cells, one central cell and 3-egg apparatus. Egg apparatus comprises one egg and 2-synergid.
TS EAMCET-10.08.2021 Shift-I
Sexual Reproduction in Flowering Plants
262616
If the number of chromosomes in egg cell is 8 , then what is the number of chromosomes in endosperm?
1 24
2 8
3 16
4 12
Explanation:
Exp. A The egg cell lies between the synergid towards the micropyle side. Its wall is more thick than the synergids, it passes micropylar vacuole and chalazal nucleus. Egg cell is haploid, whereas endosperm is triploid as it is formed by fusion of one male gamete with two polar nuclei. Therefore the number of chromosome in endosperm will be \(8 \times 3=24\).
UP CPMT-2011
Sexual Reproduction in Flowering Plants
262617
What is the direction of micropyle in anatropous ovule :-
1 Upward
2 Downward
3 Right
4 Left
Explanation:
The anatropous ovule is inverted i.e. rotated at \(180^{\circ}\) angle and micropyle towards below (down word) and chalaza at upper side, micropyle close to funicle. Funicle runs parallel to the body of ovule. Anatropous ovule found in \(82 \%\) families e.g. malavaceae, solanaceae, cucurbitaceae.
AIPMT-2002
Sexual Reproduction in Flowering Plants
262619
The body of the ovule is fused within the funicle at
1 Micropyle
2 Nucellus
3 Chalaza
4 Hilum
Explanation:
The point of attachment of the funicle with main body of ovule is called helium. - The primary parietal cell divides periclinally and anticlinally to form nucellus. i.e. nucellus well developed and primary sporogenous cell behaves as MMC. - The integument completely surround the nucellus except at the apex where an opening called micropyle usually formed from inner integuments but sometimes form both integuments.
