NEET Test Series from KOTA - 10 Papers In MS WORD
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BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341661
Which is correct about Oxalis?
1 It propagates as runner
2 Bears two types of flowers, chasmogamous and cleistogamous
3 Produces assured seed-set even in the absence of pollinators
4 All of the above
Explanation:
The correct sentences about Oxalis are (1) It propagates as runner (2) Bears two types of flowers, chasmogamous and cleistogamous (3) Produces assured seed-set even in the absence of pollinators. So option 4 is correct.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341662
In some plants, stigma and anther mature at different times because:
1 It attracts pollinators
2 If facilitates self-pollination
3 It prevents cross pollination
4 It facilitates cross pollination
Explanation:
In dichogamy, the male and female parts of a bisexual flower mature at different times and xenogamy (cross-pollination) is favored. If the stamens mature before the pistil, the condition is known as protandry, while if the carpels mature before stamens, the condition is known as protogyny.
KCET - 2019
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341663
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
1 Monoecious plant bearing unisexual flowers
2 Dioecious plant bearing only male or female flowers
3 Monoecious plant with bisexual flowers
4 Dioecious plant with bisexual flowers
Explanation:
Autogamy can happen in case of bisexual flowers.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341664
The following statement represents which out breeding device - The pollen is released before the stigma becomes receptive or stigma becomes receptive before the release of pollen. It prevents autogamy in bisexual flower.
1 Herkogamy
2 Dichogamy
3 Self compatibility
4 Unisexuality
Explanation:
Dichogamy consists of Protandry - The pollen grains mature before the stigma becomes receptive and Protogyny - Stigmas mature earlier so that they get pollinated before the anthers of the same flower develop pollen grains
2 Bears two types of flowers, chasmogamous and cleistogamous
3 Produces assured seed-set even in the absence of pollinators
4 All of the above
Explanation:
The correct sentences about Oxalis are (1) It propagates as runner (2) Bears two types of flowers, chasmogamous and cleistogamous (3) Produces assured seed-set even in the absence of pollinators. So option 4 is correct.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341662
In some plants, stigma and anther mature at different times because:
1 It attracts pollinators
2 If facilitates self-pollination
3 It prevents cross pollination
4 It facilitates cross pollination
Explanation:
In dichogamy, the male and female parts of a bisexual flower mature at different times and xenogamy (cross-pollination) is favored. If the stamens mature before the pistil, the condition is known as protandry, while if the carpels mature before stamens, the condition is known as protogyny.
KCET - 2019
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341663
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
1 Monoecious plant bearing unisexual flowers
2 Dioecious plant bearing only male or female flowers
3 Monoecious plant with bisexual flowers
4 Dioecious plant with bisexual flowers
Explanation:
Autogamy can happen in case of bisexual flowers.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341664
The following statement represents which out breeding device - The pollen is released before the stigma becomes receptive or stigma becomes receptive before the release of pollen. It prevents autogamy in bisexual flower.
1 Herkogamy
2 Dichogamy
3 Self compatibility
4 Unisexuality
Explanation:
Dichogamy consists of Protandry - The pollen grains mature before the stigma becomes receptive and Protogyny - Stigmas mature earlier so that they get pollinated before the anthers of the same flower develop pollen grains
2 Bears two types of flowers, chasmogamous and cleistogamous
3 Produces assured seed-set even in the absence of pollinators
4 All of the above
Explanation:
The correct sentences about Oxalis are (1) It propagates as runner (2) Bears two types of flowers, chasmogamous and cleistogamous (3) Produces assured seed-set even in the absence of pollinators. So option 4 is correct.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341662
In some plants, stigma and anther mature at different times because:
1 It attracts pollinators
2 If facilitates self-pollination
3 It prevents cross pollination
4 It facilitates cross pollination
Explanation:
In dichogamy, the male and female parts of a bisexual flower mature at different times and xenogamy (cross-pollination) is favored. If the stamens mature before the pistil, the condition is known as protandry, while if the carpels mature before stamens, the condition is known as protogyny.
KCET - 2019
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341663
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
1 Monoecious plant bearing unisexual flowers
2 Dioecious plant bearing only male or female flowers
3 Monoecious plant with bisexual flowers
4 Dioecious plant with bisexual flowers
Explanation:
Autogamy can happen in case of bisexual flowers.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341664
The following statement represents which out breeding device - The pollen is released before the stigma becomes receptive or stigma becomes receptive before the release of pollen. It prevents autogamy in bisexual flower.
1 Herkogamy
2 Dichogamy
3 Self compatibility
4 Unisexuality
Explanation:
Dichogamy consists of Protandry - The pollen grains mature before the stigma becomes receptive and Protogyny - Stigmas mature earlier so that they get pollinated before the anthers of the same flower develop pollen grains
2 Bears two types of flowers, chasmogamous and cleistogamous
3 Produces assured seed-set even in the absence of pollinators
4 All of the above
Explanation:
The correct sentences about Oxalis are (1) It propagates as runner (2) Bears two types of flowers, chasmogamous and cleistogamous (3) Produces assured seed-set even in the absence of pollinators. So option 4 is correct.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341662
In some plants, stigma and anther mature at different times because:
1 It attracts pollinators
2 If facilitates self-pollination
3 It prevents cross pollination
4 It facilitates cross pollination
Explanation:
In dichogamy, the male and female parts of a bisexual flower mature at different times and xenogamy (cross-pollination) is favored. If the stamens mature before the pistil, the condition is known as protandry, while if the carpels mature before stamens, the condition is known as protogyny.
KCET - 2019
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341663
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
1 Monoecious plant bearing unisexual flowers
2 Dioecious plant bearing only male or female flowers
3 Monoecious plant with bisexual flowers
4 Dioecious plant with bisexual flowers
Explanation:
Autogamy can happen in case of bisexual flowers.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341664
The following statement represents which out breeding device - The pollen is released before the stigma becomes receptive or stigma becomes receptive before the release of pollen. It prevents autogamy in bisexual flower.
1 Herkogamy
2 Dichogamy
3 Self compatibility
4 Unisexuality
Explanation:
Dichogamy consists of Protandry - The pollen grains mature before the stigma becomes receptive and Protogyny - Stigmas mature earlier so that they get pollinated before the anthers of the same flower develop pollen grains
