Pollination is the transfer of pollen grains from the male part of a flower to the female part of a flower. It is an essential step in the sexual reproduction of flowering plants (angiosperms) and seed-bearing plants (gymnosperms). - Bryophytes and pteridophytes are non-seed- bearing plants, and therefore do not undergo pollination.
JIPMER-2004
Sexual Reproduction in Flowering Plants
262719
Pollination in Rafflesia is occurred by:
1 Carrion flies
2 Elephant
3 Bat
4 Crow
Explanation:
Rafflesia is a genus of parasitic flowering plants native to southeast Asia. It produces the largest flowers in the world, which can be up to 1 meter in diameter and weigh up to 10 kilograms. Rafflesia flowers are pollinated by carrion flies. The flowers attract the flies by their foul odor, which resembles rotting meat. The flies are drawn to the flowers to lay their eggs and visit another flower they transfer the pollen to the stigma of that flower. - Pollination by carrion flies is a specialized type of pollination called sparomyophilly.
AIIMS-2015
Sexual Reproduction in Flowering Plants
262723
Xenogamy is essentially a type of
1 Cleistogamy
2 Allogamy
3 Autogamy
4 Homogamy
Explanation:
Xenogamuy is a type of cross-pollination which is a type of allogamy. Xenogamy is more advantageous than autogamy because it leads to greater genetic diversity from a different plant, which has a different genetic makeup. This can help the population to adapt to change in the environment.
WB JEE-2012
Sexual Reproduction in Flowering Plants
262725
Cross pollination in crop is called as:
1 autogamy
2 cleistogamy
3 chasmogamy
4 allogamy
Explanation:
Cross pollination in crop is called as allogamy, in which pollen grains are transferred from the anther of a flower to the stigma of a flower of different plant. - Autogamy is a type of self-pollination. - Cleistogamy is a self pollination process which occurs in cleistoganous flower. - In chasmogany, flowers are bisexual and they have exposed anthers and stigma so that both self pollination and cross pollination can occur.
BHU PMT-2002
Sexual Reproduction in Flowering Plants
262728
Generative cell was destroyed by laser but a normal pollen tube was still formed because
1 Laser beam stimulates growth of pollen tube
2 The region of emergence of pollen tube is not harmed
3 Vegetative cell is not damaged
4 Contents of killed generative cell stimulate pollen
Explanation:
Generative cell was destroyed by laser but a normal pollen tube was still formed because vegetative cell is not damaged. Vegetative cell helps in pollen tube formation. Since, vegetative cell gives rise to pollen tube and generative cell divides to form two male gametes. Destruction of the generative cell will ensure that no male gametes are formed.
Pollination is the transfer of pollen grains from the male part of a flower to the female part of a flower. It is an essential step in the sexual reproduction of flowering plants (angiosperms) and seed-bearing plants (gymnosperms). - Bryophytes and pteridophytes are non-seed- bearing plants, and therefore do not undergo pollination.
JIPMER-2004
Sexual Reproduction in Flowering Plants
262719
Pollination in Rafflesia is occurred by:
1 Carrion flies
2 Elephant
3 Bat
4 Crow
Explanation:
Rafflesia is a genus of parasitic flowering plants native to southeast Asia. It produces the largest flowers in the world, which can be up to 1 meter in diameter and weigh up to 10 kilograms. Rafflesia flowers are pollinated by carrion flies. The flowers attract the flies by their foul odor, which resembles rotting meat. The flies are drawn to the flowers to lay their eggs and visit another flower they transfer the pollen to the stigma of that flower. - Pollination by carrion flies is a specialized type of pollination called sparomyophilly.
AIIMS-2015
Sexual Reproduction in Flowering Plants
262723
Xenogamy is essentially a type of
1 Cleistogamy
2 Allogamy
3 Autogamy
4 Homogamy
Explanation:
Xenogamuy is a type of cross-pollination which is a type of allogamy. Xenogamy is more advantageous than autogamy because it leads to greater genetic diversity from a different plant, which has a different genetic makeup. This can help the population to adapt to change in the environment.
WB JEE-2012
Sexual Reproduction in Flowering Plants
262725
Cross pollination in crop is called as:
1 autogamy
2 cleistogamy
3 chasmogamy
4 allogamy
Explanation:
Cross pollination in crop is called as allogamy, in which pollen grains are transferred from the anther of a flower to the stigma of a flower of different plant. - Autogamy is a type of self-pollination. - Cleistogamy is a self pollination process which occurs in cleistoganous flower. - In chasmogany, flowers are bisexual and they have exposed anthers and stigma so that both self pollination and cross pollination can occur.
BHU PMT-2002
Sexual Reproduction in Flowering Plants
262728
Generative cell was destroyed by laser but a normal pollen tube was still formed because
1 Laser beam stimulates growth of pollen tube
2 The region of emergence of pollen tube is not harmed
3 Vegetative cell is not damaged
4 Contents of killed generative cell stimulate pollen
Explanation:
Generative cell was destroyed by laser but a normal pollen tube was still formed because vegetative cell is not damaged. Vegetative cell helps in pollen tube formation. Since, vegetative cell gives rise to pollen tube and generative cell divides to form two male gametes. Destruction of the generative cell will ensure that no male gametes are formed.
Pollination is the transfer of pollen grains from the male part of a flower to the female part of a flower. It is an essential step in the sexual reproduction of flowering plants (angiosperms) and seed-bearing plants (gymnosperms). - Bryophytes and pteridophytes are non-seed- bearing plants, and therefore do not undergo pollination.
JIPMER-2004
Sexual Reproduction in Flowering Plants
262719
Pollination in Rafflesia is occurred by:
1 Carrion flies
2 Elephant
3 Bat
4 Crow
Explanation:
Rafflesia is a genus of parasitic flowering plants native to southeast Asia. It produces the largest flowers in the world, which can be up to 1 meter in diameter and weigh up to 10 kilograms. Rafflesia flowers are pollinated by carrion flies. The flowers attract the flies by their foul odor, which resembles rotting meat. The flies are drawn to the flowers to lay their eggs and visit another flower they transfer the pollen to the stigma of that flower. - Pollination by carrion flies is a specialized type of pollination called sparomyophilly.
AIIMS-2015
Sexual Reproduction in Flowering Plants
262723
Xenogamy is essentially a type of
1 Cleistogamy
2 Allogamy
3 Autogamy
4 Homogamy
Explanation:
Xenogamuy is a type of cross-pollination which is a type of allogamy. Xenogamy is more advantageous than autogamy because it leads to greater genetic diversity from a different plant, which has a different genetic makeup. This can help the population to adapt to change in the environment.
WB JEE-2012
Sexual Reproduction in Flowering Plants
262725
Cross pollination in crop is called as:
1 autogamy
2 cleistogamy
3 chasmogamy
4 allogamy
Explanation:
Cross pollination in crop is called as allogamy, in which pollen grains are transferred from the anther of a flower to the stigma of a flower of different plant. - Autogamy is a type of self-pollination. - Cleistogamy is a self pollination process which occurs in cleistoganous flower. - In chasmogany, flowers are bisexual and they have exposed anthers and stigma so that both self pollination and cross pollination can occur.
BHU PMT-2002
Sexual Reproduction in Flowering Plants
262728
Generative cell was destroyed by laser but a normal pollen tube was still formed because
1 Laser beam stimulates growth of pollen tube
2 The region of emergence of pollen tube is not harmed
3 Vegetative cell is not damaged
4 Contents of killed generative cell stimulate pollen
Explanation:
Generative cell was destroyed by laser but a normal pollen tube was still formed because vegetative cell is not damaged. Vegetative cell helps in pollen tube formation. Since, vegetative cell gives rise to pollen tube and generative cell divides to form two male gametes. Destruction of the generative cell will ensure that no male gametes are formed.
Pollination is the transfer of pollen grains from the male part of a flower to the female part of a flower. It is an essential step in the sexual reproduction of flowering plants (angiosperms) and seed-bearing plants (gymnosperms). - Bryophytes and pteridophytes are non-seed- bearing plants, and therefore do not undergo pollination.
JIPMER-2004
Sexual Reproduction in Flowering Plants
262719
Pollination in Rafflesia is occurred by:
1 Carrion flies
2 Elephant
3 Bat
4 Crow
Explanation:
Rafflesia is a genus of parasitic flowering plants native to southeast Asia. It produces the largest flowers in the world, which can be up to 1 meter in diameter and weigh up to 10 kilograms. Rafflesia flowers are pollinated by carrion flies. The flowers attract the flies by their foul odor, which resembles rotting meat. The flies are drawn to the flowers to lay their eggs and visit another flower they transfer the pollen to the stigma of that flower. - Pollination by carrion flies is a specialized type of pollination called sparomyophilly.
AIIMS-2015
Sexual Reproduction in Flowering Plants
262723
Xenogamy is essentially a type of
1 Cleistogamy
2 Allogamy
3 Autogamy
4 Homogamy
Explanation:
Xenogamuy is a type of cross-pollination which is a type of allogamy. Xenogamy is more advantageous than autogamy because it leads to greater genetic diversity from a different plant, which has a different genetic makeup. This can help the population to adapt to change in the environment.
WB JEE-2012
Sexual Reproduction in Flowering Plants
262725
Cross pollination in crop is called as:
1 autogamy
2 cleistogamy
3 chasmogamy
4 allogamy
Explanation:
Cross pollination in crop is called as allogamy, in which pollen grains are transferred from the anther of a flower to the stigma of a flower of different plant. - Autogamy is a type of self-pollination. - Cleistogamy is a self pollination process which occurs in cleistoganous flower. - In chasmogany, flowers are bisexual and they have exposed anthers and stigma so that both self pollination and cross pollination can occur.
BHU PMT-2002
Sexual Reproduction in Flowering Plants
262728
Generative cell was destroyed by laser but a normal pollen tube was still formed because
1 Laser beam stimulates growth of pollen tube
2 The region of emergence of pollen tube is not harmed
3 Vegetative cell is not damaged
4 Contents of killed generative cell stimulate pollen
Explanation:
Generative cell was destroyed by laser but a normal pollen tube was still formed because vegetative cell is not damaged. Vegetative cell helps in pollen tube formation. Since, vegetative cell gives rise to pollen tube and generative cell divides to form two male gametes. Destruction of the generative cell will ensure that no male gametes are formed.
Pollination is the transfer of pollen grains from the male part of a flower to the female part of a flower. It is an essential step in the sexual reproduction of flowering plants (angiosperms) and seed-bearing plants (gymnosperms). - Bryophytes and pteridophytes are non-seed- bearing plants, and therefore do not undergo pollination.
JIPMER-2004
Sexual Reproduction in Flowering Plants
262719
Pollination in Rafflesia is occurred by:
1 Carrion flies
2 Elephant
3 Bat
4 Crow
Explanation:
Rafflesia is a genus of parasitic flowering plants native to southeast Asia. It produces the largest flowers in the world, which can be up to 1 meter in diameter and weigh up to 10 kilograms. Rafflesia flowers are pollinated by carrion flies. The flowers attract the flies by their foul odor, which resembles rotting meat. The flies are drawn to the flowers to lay their eggs and visit another flower they transfer the pollen to the stigma of that flower. - Pollination by carrion flies is a specialized type of pollination called sparomyophilly.
AIIMS-2015
Sexual Reproduction in Flowering Plants
262723
Xenogamy is essentially a type of
1 Cleistogamy
2 Allogamy
3 Autogamy
4 Homogamy
Explanation:
Xenogamuy is a type of cross-pollination which is a type of allogamy. Xenogamy is more advantageous than autogamy because it leads to greater genetic diversity from a different plant, which has a different genetic makeup. This can help the population to adapt to change in the environment.
WB JEE-2012
Sexual Reproduction in Flowering Plants
262725
Cross pollination in crop is called as:
1 autogamy
2 cleistogamy
3 chasmogamy
4 allogamy
Explanation:
Cross pollination in crop is called as allogamy, in which pollen grains are transferred from the anther of a flower to the stigma of a flower of different plant. - Autogamy is a type of self-pollination. - Cleistogamy is a self pollination process which occurs in cleistoganous flower. - In chasmogany, flowers are bisexual and they have exposed anthers and stigma so that both self pollination and cross pollination can occur.
BHU PMT-2002
Sexual Reproduction in Flowering Plants
262728
Generative cell was destroyed by laser but a normal pollen tube was still formed because
1 Laser beam stimulates growth of pollen tube
2 The region of emergence of pollen tube is not harmed
3 Vegetative cell is not damaged
4 Contents of killed generative cell stimulate pollen
Explanation:
Generative cell was destroyed by laser but a normal pollen tube was still formed because vegetative cell is not damaged. Vegetative cell helps in pollen tube formation. Since, vegetative cell gives rise to pollen tube and generative cell divides to form two male gametes. Destruction of the generative cell will ensure that no male gametes are formed.
