341622
Through which route does the pollen tube enter the ovule
1 Chalaza
2 Integument
3 Micropyle
4 All of these
Explanation:
All three types can be route of the pollen tube enters in the ovule as chalazogamy, mesogamy and porogamy, however ultimately enter through micropyle to release male gamete
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341623
Self incompatibility means
1 Failure of pollen to fertilize the same flower of the same plant
2 Failure of pollen to fertilize the flower of different plant
3 Both (1) and (2) are correct
4 None of these
Explanation:
Self-incompatibility is a widespread mechanism in flowering plants that prevents inbreeding and promotes outcrossing or it is failure of pollen to fertilize the same flower.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341624
Pollen pistil interaction is
1 Chemically mediated process
2 Dynamic process
3 Genetically controlled process
4 More than one option is correct
Explanation:
The ability of the pistil to recognise the pollen followed by its acceptance or rejection is the result of a continuous dialogue between pollen grain and the pistil. This dialogue is mediated by chemical components of the pollen interacting with those of the pistil. Pollen-pistil interaction is a dynamic process involving pollen recognition followed by promotion or inhibition of the pollen
341622
Through which route does the pollen tube enter the ovule
1 Chalaza
2 Integument
3 Micropyle
4 All of these
Explanation:
All three types can be route of the pollen tube enters in the ovule as chalazogamy, mesogamy and porogamy, however ultimately enter through micropyle to release male gamete
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341623
Self incompatibility means
1 Failure of pollen to fertilize the same flower of the same plant
2 Failure of pollen to fertilize the flower of different plant
3 Both (1) and (2) are correct
4 None of these
Explanation:
Self-incompatibility is a widespread mechanism in flowering plants that prevents inbreeding and promotes outcrossing or it is failure of pollen to fertilize the same flower.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341624
Pollen pistil interaction is
1 Chemically mediated process
2 Dynamic process
3 Genetically controlled process
4 More than one option is correct
Explanation:
The ability of the pistil to recognise the pollen followed by its acceptance or rejection is the result of a continuous dialogue between pollen grain and the pistil. This dialogue is mediated by chemical components of the pollen interacting with those of the pistil. Pollen-pistil interaction is a dynamic process involving pollen recognition followed by promotion or inhibition of the pollen
341622
Through which route does the pollen tube enter the ovule
1 Chalaza
2 Integument
3 Micropyle
4 All of these
Explanation:
All three types can be route of the pollen tube enters in the ovule as chalazogamy, mesogamy and porogamy, however ultimately enter through micropyle to release male gamete
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341623
Self incompatibility means
1 Failure of pollen to fertilize the same flower of the same plant
2 Failure of pollen to fertilize the flower of different plant
3 Both (1) and (2) are correct
4 None of these
Explanation:
Self-incompatibility is a widespread mechanism in flowering plants that prevents inbreeding and promotes outcrossing or it is failure of pollen to fertilize the same flower.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341624
Pollen pistil interaction is
1 Chemically mediated process
2 Dynamic process
3 Genetically controlled process
4 More than one option is correct
Explanation:
The ability of the pistil to recognise the pollen followed by its acceptance or rejection is the result of a continuous dialogue between pollen grain and the pistil. This dialogue is mediated by chemical components of the pollen interacting with those of the pistil. Pollen-pistil interaction is a dynamic process involving pollen recognition followed by promotion or inhibition of the pollen
