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Pollen is the plants mechanism of transferring haploid (n) male genetic material (male gametophytes) from the anther of one flower to the stigma of another (cross-pollination) or from the anther of one flower to the stigma of the same flower (self-pollination).
The pollen grain is hard and encapsulates the genetic materials (of one parent) with in, in very much the same way that a seed contains the genetic material of both parents.
Pollen is small (sometimes microscopic), light and can travel far by wind or attached to insects (bees, moths, butterflies).
In angiosperms pollen is produced in the anther of the flowers, in gymnosperms it is produced in the male cones of the plant.
When the pollen grain lands on the stigma of suitable flower (very closely related species or same species) the pollen grain germinates; a pollen tube grows down the style and into the ovary (controlled by the generative and tube nucleus - which were contained in the pollen grain) of the flower, here it releases two sperm nuclei which fuse with the haploid (n) nucleus of the ovule to form a zygote.
Pollen is made in the male part of the flower (anther) and is full of genetic material. When the pollen and the ova (egg) are joined the DNA from the pollen enters the ova and joins with its DNA. This is fertilisation and the fertilised ova grows into a seed. (pollen has a similar job to do for plants that sperm does for animals).
What else can I help you with?
What is the function of stigma in protists?
The function of it is to store pollen grains
What is the function of the pollen grains in the flower?
It takes the sperm into the male reproductive organ and then new flowers grow.
What is the function the style in the flower?
The function of the style in a flower is to connect the stigma to the ovary. This is where pollen grains are deposited and transported to the ovary for pollination.
What is the function of the pistal in a plant?
The pistil is the female reproductive organ in a plant that contains the ovary, style, and stigma. Its function is to receive pollen, facilitate fertilization, and produce seeds.
Why germination of cms pollen is low?
The low germination of CMS (Cytoplasmic Male Sterility) pollen can be due to various reasons such as genetic factors, environmental conditions, or improper development of the pollen grains. It can also be influenced by factors like temperature, humidity, nutrient availability, and the age of the pollen grains. Additionally, disruptions in mitochondrial function or cytoplasmic genes can also contribute to low germination rates in CMS pollen.
What is the function of the pollen sacs in a flower?
the function of the pollen sac is to produce pollen (pollen grains). The pollen sac is the microsporangium of a seed plant in which pollen is produced. Most plants except coniferous plants contain four (4) pollen sacs.
What is function of anther?
The function of the male flower is to produce pollen.
What is the function of stigma in protists?
The function of it is to store pollen grains
What is the function of a stamens?
the function of a stamen is to protect or cover up the pollen
What is the function of the pollen tubes?
it sucks
What is a function of filament?
it kills the pollen
What is the function of pollen grains?
Matured pollen grains contained sperm cells. When Pollen grains are sticky, you have pollen. Pollen grains are contained in the pollen sac, with the purpose of helping plants reproduce.
What is the function of a pollen tube?
The long tube
How does the pollen tube nucleus function in fertilization?
The pollen tube nucleus directs the growth of the pollen tube down through the pistil to the ovary
What is the function and parts of the stamen?
The stamen provides pollen grains and male gametes are released from pollen grains during pollen germination and fertilization
What is the primary function of the anthers on lily flowers?
The primary function of the anthers on lily flowers is to produce and release pollen. Pollen contains the male gametes needed for fertilization when it comes into contact with the stigma of the same or another flower.
What is the function of pollen cells?
It is the sperm of plants.The pollen cells goes to the female reproductive part of the plants through the wind,insects etc. It goes inside makes seeds the seeds mature they make new plants.
