1 Transfer of pollen from anthers to stigma in the same flower
2 Occurrence of male and female sex organs in the same flower
3 Germination of pollen grains
4 Transfer of pollen from one flower to another on the different plants
Explanation:
The transfer of pollen grains from the anther to the stigma of the same flower is called self pollination.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341654
Choose the correct statement from the following:
1 Cleistogamous flowers always exhibit autogamy
2 Chasmogamous flowers always exhibit geitonogamy
3 Cleistogamous flowers exhibit both autogamy and geitonogamy
4 Chasmogamous flowers never exhibit autogamy
Explanation:
Cleistogamous flowers do not open at all and thus entry of pollens from another flower is not possible. Hence, cleistomgamous flowers always exhibit autogamy.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341655
Autogamy can occur in a chasmogamous flower if:
1 Pollen matures before maturity of ovule
2 Ovules mature before maturity of pollen
3 Both pollen and ovules mature simultaneously
4 Both anther and stigma are of equal lengths.
Explanation:
Relative lengths of stigma and anther are not the only factors, time of maturity of pollens and ovules is also important in deciding the type of pollination. If pollens mature before ovules; they will become ineffective by the time the ovule matures.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341656
Choose the correct statement
1 Chasmogamous flowers never exhibit autogamy
2 Cleistogamous flowers exhibit both autogamy and geitonogamy
3 Chasmogamous flowers always exhibit geitonogamy
4 Cleistogamous flowers always exhibit autogamy
Explanation:
Cleistogamous flowers are the flowers which don't open. In Cleistogamous flowers, reproductive structures are smaller and the pollen are produced in less in number. In Cleistogamous flower the anthers and stigma lie close to each other with in the closed flowers. When anthers dehisces in the flower buds, pollen grains come in contact with the stigma for effective pollination. Thus, these flowers are invariably autogamous as there is no chance of cross-pollen landing on the stigma.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341657
Both autogamy and geitonogamy are prevented in
1 Papaya
2 Cucmber
3 Castor
4 Maize
Explanation:
Both autogamy and geitonogamy are prevented in Papaya as it is dioceious.
1 Transfer of pollen from anthers to stigma in the same flower
2 Occurrence of male and female sex organs in the same flower
3 Germination of pollen grains
4 Transfer of pollen from one flower to another on the different plants
Explanation:
The transfer of pollen grains from the anther to the stigma of the same flower is called self pollination.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341654
Choose the correct statement from the following:
1 Cleistogamous flowers always exhibit autogamy
2 Chasmogamous flowers always exhibit geitonogamy
3 Cleistogamous flowers exhibit both autogamy and geitonogamy
4 Chasmogamous flowers never exhibit autogamy
Explanation:
Cleistogamous flowers do not open at all and thus entry of pollens from another flower is not possible. Hence, cleistomgamous flowers always exhibit autogamy.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341655
Autogamy can occur in a chasmogamous flower if:
1 Pollen matures before maturity of ovule
2 Ovules mature before maturity of pollen
3 Both pollen and ovules mature simultaneously
4 Both anther and stigma are of equal lengths.
Explanation:
Relative lengths of stigma and anther are not the only factors, time of maturity of pollens and ovules is also important in deciding the type of pollination. If pollens mature before ovules; they will become ineffective by the time the ovule matures.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341656
Choose the correct statement
1 Chasmogamous flowers never exhibit autogamy
2 Cleistogamous flowers exhibit both autogamy and geitonogamy
3 Chasmogamous flowers always exhibit geitonogamy
4 Cleistogamous flowers always exhibit autogamy
Explanation:
Cleistogamous flowers are the flowers which don't open. In Cleistogamous flowers, reproductive structures are smaller and the pollen are produced in less in number. In Cleistogamous flower the anthers and stigma lie close to each other with in the closed flowers. When anthers dehisces in the flower buds, pollen grains come in contact with the stigma for effective pollination. Thus, these flowers are invariably autogamous as there is no chance of cross-pollen landing on the stigma.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341657
Both autogamy and geitonogamy are prevented in
1 Papaya
2 Cucmber
3 Castor
4 Maize
Explanation:
Both autogamy and geitonogamy are prevented in Papaya as it is dioceious.
1 Transfer of pollen from anthers to stigma in the same flower
2 Occurrence of male and female sex organs in the same flower
3 Germination of pollen grains
4 Transfer of pollen from one flower to another on the different plants
Explanation:
The transfer of pollen grains from the anther to the stigma of the same flower is called self pollination.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341654
Choose the correct statement from the following:
1 Cleistogamous flowers always exhibit autogamy
2 Chasmogamous flowers always exhibit geitonogamy
3 Cleistogamous flowers exhibit both autogamy and geitonogamy
4 Chasmogamous flowers never exhibit autogamy
Explanation:
Cleistogamous flowers do not open at all and thus entry of pollens from another flower is not possible. Hence, cleistomgamous flowers always exhibit autogamy.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341655
Autogamy can occur in a chasmogamous flower if:
1 Pollen matures before maturity of ovule
2 Ovules mature before maturity of pollen
3 Both pollen and ovules mature simultaneously
4 Both anther and stigma are of equal lengths.
Explanation:
Relative lengths of stigma and anther are not the only factors, time of maturity of pollens and ovules is also important in deciding the type of pollination. If pollens mature before ovules; they will become ineffective by the time the ovule matures.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341656
Choose the correct statement
1 Chasmogamous flowers never exhibit autogamy
2 Cleistogamous flowers exhibit both autogamy and geitonogamy
3 Chasmogamous flowers always exhibit geitonogamy
4 Cleistogamous flowers always exhibit autogamy
Explanation:
Cleistogamous flowers are the flowers which don't open. In Cleistogamous flowers, reproductive structures are smaller and the pollen are produced in less in number. In Cleistogamous flower the anthers and stigma lie close to each other with in the closed flowers. When anthers dehisces in the flower buds, pollen grains come in contact with the stigma for effective pollination. Thus, these flowers are invariably autogamous as there is no chance of cross-pollen landing on the stigma.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341657
Both autogamy and geitonogamy are prevented in
1 Papaya
2 Cucmber
3 Castor
4 Maize
Explanation:
Both autogamy and geitonogamy are prevented in Papaya as it is dioceious.
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BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341653
Self-pollination means
1 Transfer of pollen from anthers to stigma in the same flower
2 Occurrence of male and female sex organs in the same flower
3 Germination of pollen grains
4 Transfer of pollen from one flower to another on the different plants
Explanation:
The transfer of pollen grains from the anther to the stigma of the same flower is called self pollination.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341654
Choose the correct statement from the following:
1 Cleistogamous flowers always exhibit autogamy
2 Chasmogamous flowers always exhibit geitonogamy
3 Cleistogamous flowers exhibit both autogamy and geitonogamy
4 Chasmogamous flowers never exhibit autogamy
Explanation:
Cleistogamous flowers do not open at all and thus entry of pollens from another flower is not possible. Hence, cleistomgamous flowers always exhibit autogamy.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341655
Autogamy can occur in a chasmogamous flower if:
1 Pollen matures before maturity of ovule
2 Ovules mature before maturity of pollen
3 Both pollen and ovules mature simultaneously
4 Both anther and stigma are of equal lengths.
Explanation:
Relative lengths of stigma and anther are not the only factors, time of maturity of pollens and ovules is also important in deciding the type of pollination. If pollens mature before ovules; they will become ineffective by the time the ovule matures.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341656
Choose the correct statement
1 Chasmogamous flowers never exhibit autogamy
2 Cleistogamous flowers exhibit both autogamy and geitonogamy
3 Chasmogamous flowers always exhibit geitonogamy
4 Cleistogamous flowers always exhibit autogamy
Explanation:
Cleistogamous flowers are the flowers which don't open. In Cleistogamous flowers, reproductive structures are smaller and the pollen are produced in less in number. In Cleistogamous flower the anthers and stigma lie close to each other with in the closed flowers. When anthers dehisces in the flower buds, pollen grains come in contact with the stigma for effective pollination. Thus, these flowers are invariably autogamous as there is no chance of cross-pollen landing on the stigma.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341657
Both autogamy and geitonogamy are prevented in
1 Papaya
2 Cucmber
3 Castor
4 Maize
Explanation:
Both autogamy and geitonogamy are prevented in Papaya as it is dioceious.
1 Transfer of pollen from anthers to stigma in the same flower
2 Occurrence of male and female sex organs in the same flower
3 Germination of pollen grains
4 Transfer of pollen from one flower to another on the different plants
Explanation:
The transfer of pollen grains from the anther to the stigma of the same flower is called self pollination.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341654
Choose the correct statement from the following:
1 Cleistogamous flowers always exhibit autogamy
2 Chasmogamous flowers always exhibit geitonogamy
3 Cleistogamous flowers exhibit both autogamy and geitonogamy
4 Chasmogamous flowers never exhibit autogamy
Explanation:
Cleistogamous flowers do not open at all and thus entry of pollens from another flower is not possible. Hence, cleistomgamous flowers always exhibit autogamy.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341655
Autogamy can occur in a chasmogamous flower if:
1 Pollen matures before maturity of ovule
2 Ovules mature before maturity of pollen
3 Both pollen and ovules mature simultaneously
4 Both anther and stigma are of equal lengths.
Explanation:
Relative lengths of stigma and anther are not the only factors, time of maturity of pollens and ovules is also important in deciding the type of pollination. If pollens mature before ovules; they will become ineffective by the time the ovule matures.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341656
Choose the correct statement
1 Chasmogamous flowers never exhibit autogamy
2 Cleistogamous flowers exhibit both autogamy and geitonogamy
3 Chasmogamous flowers always exhibit geitonogamy
4 Cleistogamous flowers always exhibit autogamy
Explanation:
Cleistogamous flowers are the flowers which don't open. In Cleistogamous flowers, reproductive structures are smaller and the pollen are produced in less in number. In Cleistogamous flower the anthers and stigma lie close to each other with in the closed flowers. When anthers dehisces in the flower buds, pollen grains come in contact with the stigma for effective pollination. Thus, these flowers are invariably autogamous as there is no chance of cross-pollen landing on the stigma.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341657
Both autogamy and geitonogamy are prevented in
1 Papaya
2 Cucmber
3 Castor
4 Maize
Explanation:
Both autogamy and geitonogamy are prevented in Papaya as it is dioceious.