Type of pollination of Commelina is cleistogamy. In cleistogamy pollination, flowers do not open at all. In such flowers, the anther and stigma are very close to each other. - Cleistogamy is a type of self-pollination - Chasmogamy pollination occurs in self-pollinating flowers. In such flowers, pollination occurs when the flower is open with its anthers and stigma exposed. - Xenogamy is a type of cross- pollination in which pollen grains transfer from the anther of a flower to the stigma of a different plant. - Geitonogamy is also a type of cross-pollination in which pollen grains transfer from the anther to the stigma same plant.
J and K CET-2008 / JIPMER-1999
Sexual Reproduction in Flowering Plants
262735
The type of pollination involving transfer of pollen grains from anther to the stigma of the same flower is known as
1 geitonogamy
2 xenogamy
3 autogamy
4 apogamy
Explanation:
Autogamy is a type of self-pollination which involves transfer of pollen grains from anther to the stigma of the same flower. Geitonogamy is a type of cross-pollination in which pollen grains transfer from| the anther to the stigma of same plant. Xenogamy is also a type of cross-pollination in which pollen grains transfer from the anther of a flower to the stigma of a different plant. Apogamy is a type of asexual reproduction in plants where gametophyte develops from the sporophyte.
DUMET-2010
Sexual Reproduction in Flowering Plants
262740
Consider the following statements with respect to flowering plants and choose the correct option.
1 \(\mathrm{A}\) and \(\mathrm{B}\) alone are correct
2 \(\mathrm{A}\) and \(\mathrm{C}\) alone are correct
3 A and D alone are correct
4 \(\mathrm{B}\) and \(\mathrm{C}\) alone are correct
5 \(\mathrm{C}\) and \(\mathrm{D}\) alone are correct
Explanation:
Exp. E : (a)- The pollen grains itself do not represent the male gamete. It contains two cells on vegetative cell and one generative cell. After pollination vegetative cell produce tube nucleus and generative cell produce two haploid male gamete. (b)- The functional megaspore develops into the embryo sac represent the female gametophyte, which consist of 7-cells and 8 nucleus, 3 cells at micropylar end consist of 2 synergids and one egg cell. One polar nuclei or secondary nucleus at center of embryo sac. There antipodal cells at chalaza end.
Kerala PMT-2015
Sexual Reproduction in Flowering Plants
262748
What is the type of placentation do you find in Nymphaea?
1 Parietal
2 Superficial
3 Marginal
4 Basal
Explanation:
Superficial type of placentation is find in Nymphaea. Placentation is the arrangement of the ovules within the ovary. - In superficial placentation, ovules are borne on the entire inner wall of the ovary as well as septa of the ovary. - In basal placentation, ovary is unilocular and single ovule is born at the base of ovary. - In marginal placentation, placenta forms a ridge that runs across the ovary ventral suture and ovules are borne in rows on the ridge. - In parietal placentation, the ovules are borne on the inner peripheral wall.
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Sexual Reproduction in Flowering Plants
262734
Type of pollination of commelina is
1 Chasmogamy
2 Geitonogamy
3 Xenogamy
4 Cleistogamy
Explanation:
Type of pollination of Commelina is cleistogamy. In cleistogamy pollination, flowers do not open at all. In such flowers, the anther and stigma are very close to each other. - Cleistogamy is a type of self-pollination - Chasmogamy pollination occurs in self-pollinating flowers. In such flowers, pollination occurs when the flower is open with its anthers and stigma exposed. - Xenogamy is a type of cross- pollination in which pollen grains transfer from the anther of a flower to the stigma of a different plant. - Geitonogamy is also a type of cross-pollination in which pollen grains transfer from the anther to the stigma same plant.
J and K CET-2008 / JIPMER-1999
Sexual Reproduction in Flowering Plants
262735
The type of pollination involving transfer of pollen grains from anther to the stigma of the same flower is known as
1 geitonogamy
2 xenogamy
3 autogamy
4 apogamy
Explanation:
Autogamy is a type of self-pollination which involves transfer of pollen grains from anther to the stigma of the same flower. Geitonogamy is a type of cross-pollination in which pollen grains transfer from| the anther to the stigma of same plant. Xenogamy is also a type of cross-pollination in which pollen grains transfer from the anther of a flower to the stigma of a different plant. Apogamy is a type of asexual reproduction in plants where gametophyte develops from the sporophyte.
DUMET-2010
Sexual Reproduction in Flowering Plants
262740
Consider the following statements with respect to flowering plants and choose the correct option.
1 \(\mathrm{A}\) and \(\mathrm{B}\) alone are correct
2 \(\mathrm{A}\) and \(\mathrm{C}\) alone are correct
3 A and D alone are correct
4 \(\mathrm{B}\) and \(\mathrm{C}\) alone are correct
5 \(\mathrm{C}\) and \(\mathrm{D}\) alone are correct
Explanation:
Exp. E : (a)- The pollen grains itself do not represent the male gamete. It contains two cells on vegetative cell and one generative cell. After pollination vegetative cell produce tube nucleus and generative cell produce two haploid male gamete. (b)- The functional megaspore develops into the embryo sac represent the female gametophyte, which consist of 7-cells and 8 nucleus, 3 cells at micropylar end consist of 2 synergids and one egg cell. One polar nuclei or secondary nucleus at center of embryo sac. There antipodal cells at chalaza end.
Kerala PMT-2015
Sexual Reproduction in Flowering Plants
262748
What is the type of placentation do you find in Nymphaea?
1 Parietal
2 Superficial
3 Marginal
4 Basal
Explanation:
Superficial type of placentation is find in Nymphaea. Placentation is the arrangement of the ovules within the ovary. - In superficial placentation, ovules are borne on the entire inner wall of the ovary as well as septa of the ovary. - In basal placentation, ovary is unilocular and single ovule is born at the base of ovary. - In marginal placentation, placenta forms a ridge that runs across the ovary ventral suture and ovules are borne in rows on the ridge. - In parietal placentation, the ovules are borne on the inner peripheral wall.
Type of pollination of Commelina is cleistogamy. In cleistogamy pollination, flowers do not open at all. In such flowers, the anther and stigma are very close to each other. - Cleistogamy is a type of self-pollination - Chasmogamy pollination occurs in self-pollinating flowers. In such flowers, pollination occurs when the flower is open with its anthers and stigma exposed. - Xenogamy is a type of cross- pollination in which pollen grains transfer from the anther of a flower to the stigma of a different plant. - Geitonogamy is also a type of cross-pollination in which pollen grains transfer from the anther to the stigma same plant.
J and K CET-2008 / JIPMER-1999
Sexual Reproduction in Flowering Plants
262735
The type of pollination involving transfer of pollen grains from anther to the stigma of the same flower is known as
1 geitonogamy
2 xenogamy
3 autogamy
4 apogamy
Explanation:
Autogamy is a type of self-pollination which involves transfer of pollen grains from anther to the stigma of the same flower. Geitonogamy is a type of cross-pollination in which pollen grains transfer from| the anther to the stigma of same plant. Xenogamy is also a type of cross-pollination in which pollen grains transfer from the anther of a flower to the stigma of a different plant. Apogamy is a type of asexual reproduction in plants where gametophyte develops from the sporophyte.
DUMET-2010
Sexual Reproduction in Flowering Plants
262740
Consider the following statements with respect to flowering plants and choose the correct option.
1 \(\mathrm{A}\) and \(\mathrm{B}\) alone are correct
2 \(\mathrm{A}\) and \(\mathrm{C}\) alone are correct
3 A and D alone are correct
4 \(\mathrm{B}\) and \(\mathrm{C}\) alone are correct
5 \(\mathrm{C}\) and \(\mathrm{D}\) alone are correct
Explanation:
Exp. E : (a)- The pollen grains itself do not represent the male gamete. It contains two cells on vegetative cell and one generative cell. After pollination vegetative cell produce tube nucleus and generative cell produce two haploid male gamete. (b)- The functional megaspore develops into the embryo sac represent the female gametophyte, which consist of 7-cells and 8 nucleus, 3 cells at micropylar end consist of 2 synergids and one egg cell. One polar nuclei or secondary nucleus at center of embryo sac. There antipodal cells at chalaza end.
Kerala PMT-2015
Sexual Reproduction in Flowering Plants
262748
What is the type of placentation do you find in Nymphaea?
1 Parietal
2 Superficial
3 Marginal
4 Basal
Explanation:
Superficial type of placentation is find in Nymphaea. Placentation is the arrangement of the ovules within the ovary. - In superficial placentation, ovules are borne on the entire inner wall of the ovary as well as septa of the ovary. - In basal placentation, ovary is unilocular and single ovule is born at the base of ovary. - In marginal placentation, placenta forms a ridge that runs across the ovary ventral suture and ovules are borne in rows on the ridge. - In parietal placentation, the ovules are borne on the inner peripheral wall.
Type of pollination of Commelina is cleistogamy. In cleistogamy pollination, flowers do not open at all. In such flowers, the anther and stigma are very close to each other. - Cleistogamy is a type of self-pollination - Chasmogamy pollination occurs in self-pollinating flowers. In such flowers, pollination occurs when the flower is open with its anthers and stigma exposed. - Xenogamy is a type of cross- pollination in which pollen grains transfer from the anther of a flower to the stigma of a different plant. - Geitonogamy is also a type of cross-pollination in which pollen grains transfer from the anther to the stigma same plant.
J and K CET-2008 / JIPMER-1999
Sexual Reproduction in Flowering Plants
262735
The type of pollination involving transfer of pollen grains from anther to the stigma of the same flower is known as
1 geitonogamy
2 xenogamy
3 autogamy
4 apogamy
Explanation:
Autogamy is a type of self-pollination which involves transfer of pollen grains from anther to the stigma of the same flower. Geitonogamy is a type of cross-pollination in which pollen grains transfer from| the anther to the stigma of same plant. Xenogamy is also a type of cross-pollination in which pollen grains transfer from the anther of a flower to the stigma of a different plant. Apogamy is a type of asexual reproduction in plants where gametophyte develops from the sporophyte.
DUMET-2010
Sexual Reproduction in Flowering Plants
262740
Consider the following statements with respect to flowering plants and choose the correct option.
1 \(\mathrm{A}\) and \(\mathrm{B}\) alone are correct
2 \(\mathrm{A}\) and \(\mathrm{C}\) alone are correct
3 A and D alone are correct
4 \(\mathrm{B}\) and \(\mathrm{C}\) alone are correct
5 \(\mathrm{C}\) and \(\mathrm{D}\) alone are correct
Explanation:
Exp. E : (a)- The pollen grains itself do not represent the male gamete. It contains two cells on vegetative cell and one generative cell. After pollination vegetative cell produce tube nucleus and generative cell produce two haploid male gamete. (b)- The functional megaspore develops into the embryo sac represent the female gametophyte, which consist of 7-cells and 8 nucleus, 3 cells at micropylar end consist of 2 synergids and one egg cell. One polar nuclei or secondary nucleus at center of embryo sac. There antipodal cells at chalaza end.
Kerala PMT-2015
Sexual Reproduction in Flowering Plants
262748
What is the type of placentation do you find in Nymphaea?
1 Parietal
2 Superficial
3 Marginal
4 Basal
Explanation:
Superficial type of placentation is find in Nymphaea. Placentation is the arrangement of the ovules within the ovary. - In superficial placentation, ovules are borne on the entire inner wall of the ovary as well as septa of the ovary. - In basal placentation, ovary is unilocular and single ovule is born at the base of ovary. - In marginal placentation, placenta forms a ridge that runs across the ovary ventral suture and ovules are borne in rows on the ridge. - In parietal placentation, the ovules are borne on the inner peripheral wall.