2 Seed dispersal is more efficient and wide spread
3 Seed set is not dependent on pollination
4 Each visit of a pollinator results in transfer of hundred of pollen grains
Explanation:
The correct answer is (3) seed set is not dependent on pollination. Cleistogamous flowers are adapted for self-pollination, and they produce seeds without the need for external pollinators, making seed set more independent of pollination events. This adaptation can be advantageous in certain ecological contexts.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341678
A dioecious flowering plant prevents both:
1 Autogamy and geitonogamy
2 Geitonogamy and xenogamy
3 Cleistogamy and xenogamy
4 Autogamy and xenogamy
Explanation:
When the male and female flowers occur on separate plants the condition is called dioecious and it prevents both autogamy and geitonogamy.
NEET - [2017]
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341659
Assertion : Attraction of flowers prevents insects from damaging other parts of the plant. Reason : Pollination carried out by insects is called Anemophily.
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
The attraction of flower in plants is not to diverge the insect from damaging other part, but to bring about pollination (i.e, transfer of pollen to the stigma). The pollen grains in insect pollinated flowers are either sticky or provided with spinous outgrowths. The stigma is also sticky. Insect pollination is entomophily.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341660
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by:
1 Bee
2 Wind
3 Bat
4 Water
Explanation:
Pollination by wind is more common amongst abiotic pollinations. Wind pollination also requires that the pollen grains are light and non-sticky so that they can be transported in wind currents. Wind pollinated flowers often have a single ovule in each ovary and numerous flowers packed into an inflorescence. They often possess well-exposed stamens ( so that the pollens are easily dispersed into wind currents ) and large often-feathery stigma to easily trap air-borne pollen grains.
2 Seed dispersal is more efficient and wide spread
3 Seed set is not dependent on pollination
4 Each visit of a pollinator results in transfer of hundred of pollen grains
Explanation:
The correct answer is (3) seed set is not dependent on pollination. Cleistogamous flowers are adapted for self-pollination, and they produce seeds without the need for external pollinators, making seed set more independent of pollination events. This adaptation can be advantageous in certain ecological contexts.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341678
A dioecious flowering plant prevents both:
1 Autogamy and geitonogamy
2 Geitonogamy and xenogamy
3 Cleistogamy and xenogamy
4 Autogamy and xenogamy
Explanation:
When the male and female flowers occur on separate plants the condition is called dioecious and it prevents both autogamy and geitonogamy.
NEET - [2017]
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341659
Assertion : Attraction of flowers prevents insects from damaging other parts of the plant. Reason : Pollination carried out by insects is called Anemophily.
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
The attraction of flower in plants is not to diverge the insect from damaging other part, but to bring about pollination (i.e, transfer of pollen to the stigma). The pollen grains in insect pollinated flowers are either sticky or provided with spinous outgrowths. The stigma is also sticky. Insect pollination is entomophily.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341660
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by:
1 Bee
2 Wind
3 Bat
4 Water
Explanation:
Pollination by wind is more common amongst abiotic pollinations. Wind pollination also requires that the pollen grains are light and non-sticky so that they can be transported in wind currents. Wind pollinated flowers often have a single ovule in each ovary and numerous flowers packed into an inflorescence. They often possess well-exposed stamens ( so that the pollens are easily dispersed into wind currents ) and large often-feathery stigma to easily trap air-borne pollen grains.
2 Seed dispersal is more efficient and wide spread
3 Seed set is not dependent on pollination
4 Each visit of a pollinator results in transfer of hundred of pollen grains
Explanation:
The correct answer is (3) seed set is not dependent on pollination. Cleistogamous flowers are adapted for self-pollination, and they produce seeds without the need for external pollinators, making seed set more independent of pollination events. This adaptation can be advantageous in certain ecological contexts.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341678
A dioecious flowering plant prevents both:
1 Autogamy and geitonogamy
2 Geitonogamy and xenogamy
3 Cleistogamy and xenogamy
4 Autogamy and xenogamy
Explanation:
When the male and female flowers occur on separate plants the condition is called dioecious and it prevents both autogamy and geitonogamy.
NEET - [2017]
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341659
Assertion : Attraction of flowers prevents insects from damaging other parts of the plant. Reason : Pollination carried out by insects is called Anemophily.
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
The attraction of flower in plants is not to diverge the insect from damaging other part, but to bring about pollination (i.e, transfer of pollen to the stigma). The pollen grains in insect pollinated flowers are either sticky or provided with spinous outgrowths. The stigma is also sticky. Insect pollination is entomophily.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341660
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by:
1 Bee
2 Wind
3 Bat
4 Water
Explanation:
Pollination by wind is more common amongst abiotic pollinations. Wind pollination also requires that the pollen grains are light and non-sticky so that they can be transported in wind currents. Wind pollinated flowers often have a single ovule in each ovary and numerous flowers packed into an inflorescence. They often possess well-exposed stamens ( so that the pollens are easily dispersed into wind currents ) and large often-feathery stigma to easily trap air-borne pollen grains.
2 Seed dispersal is more efficient and wide spread
3 Seed set is not dependent on pollination
4 Each visit of a pollinator results in transfer of hundred of pollen grains
Explanation:
The correct answer is (3) seed set is not dependent on pollination. Cleistogamous flowers are adapted for self-pollination, and they produce seeds without the need for external pollinators, making seed set more independent of pollination events. This adaptation can be advantageous in certain ecological contexts.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341678
A dioecious flowering plant prevents both:
1 Autogamy and geitonogamy
2 Geitonogamy and xenogamy
3 Cleistogamy and xenogamy
4 Autogamy and xenogamy
Explanation:
When the male and female flowers occur on separate plants the condition is called dioecious and it prevents both autogamy and geitonogamy.
NEET - [2017]
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341659
Assertion : Attraction of flowers prevents insects from damaging other parts of the plant. Reason : Pollination carried out by insects is called Anemophily.
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
The attraction of flower in plants is not to diverge the insect from damaging other part, but to bring about pollination (i.e, transfer of pollen to the stigma). The pollen grains in insect pollinated flowers are either sticky or provided with spinous outgrowths. The stigma is also sticky. Insect pollination is entomophily.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341660
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by:
1 Bee
2 Wind
3 Bat
4 Water
Explanation:
Pollination by wind is more common amongst abiotic pollinations. Wind pollination also requires that the pollen grains are light and non-sticky so that they can be transported in wind currents. Wind pollinated flowers often have a single ovule in each ovary and numerous flowers packed into an inflorescence. They often possess well-exposed stamens ( so that the pollens are easily dispersed into wind currents ) and large often-feathery stigma to easily trap air-borne pollen grains.
