NEET Test Series from KOTA - 10 Papers In MS WORD
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Sexual Reproduction in Flowering Plants
262750
On reaching the ovary, if pollen tube enters the ovule then through integuments, then it is called
1 chalazogamy
2 porogamy
3 mesogamy
4 siphonogamy
Explanation:
Exp. B On reaching the ovary, if pollen tube enters the ovule then through integuments, then it is called misogamy. When the pollen tube enters the ovule through the micropyle end, is known as porogamy. When the pollen tube enters the ovule throught the chalaza end is known as chalazogamy. In siphonogamy, pollen tubes are formed for the transmission of male gametes to the eggs.
MHT CET-06.10.2020 Shift-I
Sexual Reproduction in Flowering Plants
262691
In some plants, stigma and anther mature at different times because
1 it facilitates self pollination
2 it facilitates cross pollination
3 it attracts pollinators
4 it prevents cross pollination
Explanation:
In dichogamy, the anther and stigma mature at different times. This feature promote cross pollination and prevent self pollination.
Karnataka CET-2019
Sexual Reproduction in Flowering Plants
262692
The one advantage of cleistogamy is:
1 it leads to greater genetic diversity
2 seed dispersal is more efficient and wide spread
3 seed set is not dependent on pollinators
4 each visit of a pollinator results in transfer of hundreds of pollen grains
Explanation:
Cleistogamous flowers are those that remain closed and do not have open anthers and stigmas. Such flowers ensure self pollination and germination of seeds, since the flowers are closed pollination is not dependent on any pollinator agents.
DUMET-200 /JIPMER-2015
Sexual Reproduction in Flowering Plants
262701
Unisexuality of flowers prevents:
1 geitonogamy, but not xenogamy
2 autogamy and geitonogamy
3 autogamy, but not geitonogamy
4 both geitonogamy and xenogamy
Explanation:
Unisexuality refers to the presence of separate male and female flowers. The plant can be monoecious e.g. Cucumber, Cucurbita. (having male and female flowers on the same plant) or dioecious (having male and female flowers on the different plant,). Autogamy is possible only in bisexual flowers wherein pollination occurs within the same flower.
262750
On reaching the ovary, if pollen tube enters the ovule then through integuments, then it is called
1 chalazogamy
2 porogamy
3 mesogamy
4 siphonogamy
Explanation:
Exp. B On reaching the ovary, if pollen tube enters the ovule then through integuments, then it is called misogamy. When the pollen tube enters the ovule through the micropyle end, is known as porogamy. When the pollen tube enters the ovule throught the chalaza end is known as chalazogamy. In siphonogamy, pollen tubes are formed for the transmission of male gametes to the eggs.
MHT CET-06.10.2020 Shift-I
Sexual Reproduction in Flowering Plants
262691
In some plants, stigma and anther mature at different times because
1 it facilitates self pollination
2 it facilitates cross pollination
3 it attracts pollinators
4 it prevents cross pollination
Explanation:
In dichogamy, the anther and stigma mature at different times. This feature promote cross pollination and prevent self pollination.
Karnataka CET-2019
Sexual Reproduction in Flowering Plants
262692
The one advantage of cleistogamy is:
1 it leads to greater genetic diversity
2 seed dispersal is more efficient and wide spread
3 seed set is not dependent on pollinators
4 each visit of a pollinator results in transfer of hundreds of pollen grains
Explanation:
Cleistogamous flowers are those that remain closed and do not have open anthers and stigmas. Such flowers ensure self pollination and germination of seeds, since the flowers are closed pollination is not dependent on any pollinator agents.
DUMET-200 /JIPMER-2015
Sexual Reproduction in Flowering Plants
262701
Unisexuality of flowers prevents:
1 geitonogamy, but not xenogamy
2 autogamy and geitonogamy
3 autogamy, but not geitonogamy
4 both geitonogamy and xenogamy
Explanation:
Unisexuality refers to the presence of separate male and female flowers. The plant can be monoecious e.g. Cucumber, Cucurbita. (having male and female flowers on the same plant) or dioecious (having male and female flowers on the different plant,). Autogamy is possible only in bisexual flowers wherein pollination occurs within the same flower.
262750
On reaching the ovary, if pollen tube enters the ovule then through integuments, then it is called
1 chalazogamy
2 porogamy
3 mesogamy
4 siphonogamy
Explanation:
Exp. B On reaching the ovary, if pollen tube enters the ovule then through integuments, then it is called misogamy. When the pollen tube enters the ovule through the micropyle end, is known as porogamy. When the pollen tube enters the ovule throught the chalaza end is known as chalazogamy. In siphonogamy, pollen tubes are formed for the transmission of male gametes to the eggs.
MHT CET-06.10.2020 Shift-I
Sexual Reproduction in Flowering Plants
262691
In some plants, stigma and anther mature at different times because
1 it facilitates self pollination
2 it facilitates cross pollination
3 it attracts pollinators
4 it prevents cross pollination
Explanation:
In dichogamy, the anther and stigma mature at different times. This feature promote cross pollination and prevent self pollination.
Karnataka CET-2019
Sexual Reproduction in Flowering Plants
262692
The one advantage of cleistogamy is:
1 it leads to greater genetic diversity
2 seed dispersal is more efficient and wide spread
3 seed set is not dependent on pollinators
4 each visit of a pollinator results in transfer of hundreds of pollen grains
Explanation:
Cleistogamous flowers are those that remain closed and do not have open anthers and stigmas. Such flowers ensure self pollination and germination of seeds, since the flowers are closed pollination is not dependent on any pollinator agents.
DUMET-200 /JIPMER-2015
Sexual Reproduction in Flowering Plants
262701
Unisexuality of flowers prevents:
1 geitonogamy, but not xenogamy
2 autogamy and geitonogamy
3 autogamy, but not geitonogamy
4 both geitonogamy and xenogamy
Explanation:
Unisexuality refers to the presence of separate male and female flowers. The plant can be monoecious e.g. Cucumber, Cucurbita. (having male and female flowers on the same plant) or dioecious (having male and female flowers on the different plant,). Autogamy is possible only in bisexual flowers wherein pollination occurs within the same flower.
262750
On reaching the ovary, if pollen tube enters the ovule then through integuments, then it is called
1 chalazogamy
2 porogamy
3 mesogamy
4 siphonogamy
Explanation:
Exp. B On reaching the ovary, if pollen tube enters the ovule then through integuments, then it is called misogamy. When the pollen tube enters the ovule through the micropyle end, is known as porogamy. When the pollen tube enters the ovule throught the chalaza end is known as chalazogamy. In siphonogamy, pollen tubes are formed for the transmission of male gametes to the eggs.
MHT CET-06.10.2020 Shift-I
Sexual Reproduction in Flowering Plants
262691
In some plants, stigma and anther mature at different times because
1 it facilitates self pollination
2 it facilitates cross pollination
3 it attracts pollinators
4 it prevents cross pollination
Explanation:
In dichogamy, the anther and stigma mature at different times. This feature promote cross pollination and prevent self pollination.
Karnataka CET-2019
Sexual Reproduction in Flowering Plants
262692
The one advantage of cleistogamy is:
1 it leads to greater genetic diversity
2 seed dispersal is more efficient and wide spread
3 seed set is not dependent on pollinators
4 each visit of a pollinator results in transfer of hundreds of pollen grains
Explanation:
Cleistogamous flowers are those that remain closed and do not have open anthers and stigmas. Such flowers ensure self pollination and germination of seeds, since the flowers are closed pollination is not dependent on any pollinator agents.
DUMET-200 /JIPMER-2015
Sexual Reproduction in Flowering Plants
262701
Unisexuality of flowers prevents:
1 geitonogamy, but not xenogamy
2 autogamy and geitonogamy
3 autogamy, but not geitonogamy
4 both geitonogamy and xenogamy
Explanation:
Unisexuality refers to the presence of separate male and female flowers. The plant can be monoecious e.g. Cucumber, Cucurbita. (having male and female flowers on the same plant) or dioecious (having male and female flowers on the different plant,). Autogamy is possible only in bisexual flowers wherein pollination occurs within the same flower.
