A single pollen grain contains the generative material that forms the male gametes. It also contains the material that will form the pollen tube when the pollen lands on the pistil. These are covered by a thin layer called the intine or endospore as well as a thick protective wall called the exine or exospore.
sexual reproductive
How the nucleus from a pollen grain fertilize a female egg cell
How the nucleus from a pollen grain fertilize a female egg cell
The part of the cell that controls a pollen grain is the nucleus, which contains the genetic material (DNA) that regulates the cell's functions and development. Additionally, the cell membrane plays a crucial role in controlling the movement of substances in and out of the pollen grain. Together, these structures help ensure proper growth and function of the pollen grain during fertilization processes in plants.
No, a pollen grain is not a spore. A pollen grain is a male gametophyte produced by seed plants for the purpose of reproduction, while a spore is a reproductive cell that can develop into a new organism without the need for fusion with another cell.
sexual reproductive
How the nucleus from a pollen grain fertilize a female egg cell
How the nucleus from a pollen grain fertilize a female egg cell
reproductive cell
The male sex cells from pollen grain are called male gametes.
The part of the cell that controls a pollen grain is the nucleus, which contains the genetic material (DNA) that regulates the cell's functions and development. Additionally, the cell membrane plays a crucial role in controlling the movement of substances in and out of the pollen grain. Together, these structures help ensure proper growth and function of the pollen grain during fertilization processes in plants.
No, a pollen grain is not a spore. A pollen grain is a male gametophyte produced by seed plants for the purpose of reproduction, while a spore is a reproductive cell that can develop into a new organism without the need for fusion with another cell.
A pollen grain is a mature microspore that consists of two cells (generative cell and tube cell) enclosed within a protective wall. A microspore is a haploid cell produced in the sporangia of seed plants that eventually develops into a pollen grain through the process of microsporogenesis.
Sperms. It is sperms
Pollen grains contain the male gametes required for sexual reproduction of a plant/ flower. These are haploid, and only contain half the full set of chromosomes; the other half is contributed by the female gamete (or ovule).A grain of pollen contains:a larger vegetative cell (also called the tube cell) inside of which is aa smaller germ cell (also called the generative cell).The pollen grain "germinates" on the stigma of the receptive flower and grows down the style, once it reaches the ovule the germ cell/ nucleus fuses with the nucleus of the ovule and an embryo is formed
No, sperm cells do not grow out of a pollen grain. In plants, sperm cells are produced within the pollen grain, and they are involved in fertilization when the pollen grain reaches a female reproductive structure. Each pollen grain contains two sperm cells.
The male sex cell from a pollen grain is called a sperm cell. It is responsible for fertilizing the female sex cell (ovule) in plants during the process of pollination.