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Pollen grains are produced by the male reproductive structures of seed plants, specifically within the anthers of flowers in angiosperms and in the male cones of gymnosperms. These grains are formed through a process called microsporogenesis, where microspores develop from microsporocytes during meiosis. Each pollen grain contains genetic material that will fertilize ovules, playing a crucial role in plant reproduction.
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What does a pollen grain landing near an ovule produce?
If a pollen grain lands near an ovule, it can lead to pollination, where the pollen grain forms a pollen tube that grows towards the ovule. Once the pollen tube reaches the ovule, fertilization can occur, resulting in the formation of a seed.
Where does germination of the pollen grain occur in flowering plants?
Germination of the pollen grain typically occurs on the stigma of the carpel (female reproductive organ) in flowering plants. The pollen grain produces a pollen tube through which the male gametes travel to fertilize the ovule.
What is difference between ungerminated pollen grain and germinated pollen grain?
Ungerminated pollen grain is inactive and has not started the process of fertilization, while germinated pollen grain has started growing a pollen tube towards the ovule for fertilization. Germinated pollen grain is actively involved in the fertilization process, while ungerminated pollen grain is not.
What is a pollen grain landing near an ovule produces?
When a pollen grain lands near an ovule, it can lead to pollination. This process involves the transfer of pollen grains from the male reproductive part to the female reproductive part of a plant, which can result in fertilization and the production of seeds.
Where does germination of pollen grain occur in flowering plants?
Germination of pollen grains in flowering plants occurs on the stigma of the female reproductive structure called the pistil. The pollen grain produces a pollen tube that grows down through the style of the pistil, eventually reaching the ovary where fertilization takes place.
What produces the pollen grain?
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A pollen grain produce a narrow tube called?
The pollen grain produces a narrow tube called the corbicula.
What does a pollen grain landing near a ovule produce?
It produces a pollen tube .
What produces pollen grains?
Pollen grains are produced by the male reproductive organs of flowering plants called anthers. Anthers contain pollen sacs where pollen grains develop and mature.
What does a pollen grain landing near an ovule produce?
If a pollen grain lands near an ovule, it can lead to pollination, where the pollen grain forms a pollen tube that grows towards the ovule. Once the pollen tube reaches the ovule, fertilization can occur, resulting in the formation of a seed.
Where does germination of the pollen grain occur in flowering plants?
Germination of the pollen grain typically occurs on the stigma of the carpel (female reproductive organ) in flowering plants. The pollen grain produces a pollen tube through which the male gametes travel to fertilize the ovule.
What is difference between ungerminated pollen grain and germinated pollen grain?
Ungerminated pollen grain is inactive and has not started the process of fertilization, while germinated pollen grain has started growing a pollen tube towards the ovule for fertilization. Germinated pollen grain is actively involved in the fertilization process, while ungerminated pollen grain is not.
What is a pollen grain landing near an ovule produces?
When a pollen grain lands near an ovule, it can lead to pollination. This process involves the transfer of pollen grains from the male reproductive part to the female reproductive part of a plant, which can result in fertilization and the production of seeds.
Do Dicot have pollen grain?
yes Dicot have pollen grain and in Dicots pollen grain possess 3 germ pores
What grows from the pollen grain go the ovule?
The pollen grain produces a pollen tube that grows towards the ovule in order to deliver the male gametes for fertilization. Once the pollen tube reaches the ovule, the male gametes are released to fertilize the female gametes inside the ovule, leading to the formation of seeds.
Where does germination of pollen grain occur in flowering plants?
Germination of pollen grains in flowering plants occurs on the stigma of the female reproductive structure called the pistil. The pollen grain produces a pollen tube that grows down through the style of the pistil, eventually reaching the ovary where fertilization takes place.
What makes seeds when combined with a flower's eggs?
This tiny grain is called pollen grain.
