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The pollen for each kind of tree or flower is distinctive to that species, so there is no definite description for what pollen in general looks like - the grains aren't even all round; the size also varies: for instance, a grain of pollen from an elm tree (which is round) is about 20 micrometers in diameter, whereas a pollen grain from a Scots pine tree is kinda kidney shaped, & measures about 40 x 60 micrometers
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In a grain of pollen what is the function of the sperm that doesn't join with the egg cell?
In a grain of pollen,what is the function of the sperm cell that doesn't join with the egg cell?
Pollination can be best described as?
the transfer of the male pollen grain to the female organ.
Name the 2 things which join to make a seed?
There are two things that must join to make a seed. The zygote, or embryo, must join with the ovule.
What aids in the pollination of plants by transferring pollen grain?
The wind aids in pollination when plants transfer pollen grains. Insects can also help in the transferring of pollen grains.
What was the purpose of brown repeating the experiment with pollen grain that had been preserved in achool for 11 months?
He observed the same movement. When the experiment was repeated with rock dust the same movement was observed.
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.
Do Dicot have pollen grain?
yes Dicot have pollen grain and in Dicots pollen grain possess 3 germ pores
What makes seeds when combined with a flower's eggs?
This tiny grain is called pollen grain.
Does sperm cell grows out of a pollen grain?
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.
Can a pollen grain of a flower have one lobe?
No, after a research it is not seen that a pollen grain of a flower have only one lobe. Commonly pollen grain have two or three lobes.
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.
How close to the egg can the pollen grain get?
when a pollen grain lands on the stigma it creates a pollen tube that goes down to the egg where sperm fuzes with the egg.
What structure will pass down the pollen tube?
the pollen grain
Does the pollen grain contain the egg of an angiosperm?
no the pollen grain contains the male genetic material - sperm cells
A pollen grain produce a narrow tube called?
The pollen grain produces a narrow tube called the corbicula.
The male sex cell from pollen grain?
The male sex cells from pollen grain are called male gametes.
When a pollen grain joins with an ovam what is called?
Fertilization resulting in the formation of a zygote or embryo; technically, the pollen grain does not join with the ovule. A pollen tube grows from the pollen grain - this contains the gamete which fuses with the ovule.
