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to enable pollen grains to pass
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∙ 14y ago
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Why sucrose cause the formation of pollen tubes?
it have starch to remove substance
What happens from the time pollen lands on the female part of the flower until the seed forms?
-pollen sticks to the stigma at the end of the pistil -pollen tubes grow down the pistil to the egg cells -sperm cells from the pollen moves down the tubes -fertilization combines DNA
Why plants need pollen and spore?
plants need spores pollen and seeds to reproduce
Where do pollen tubes develop to transport the male sperm cells to the female egg cells in the ovary?
In the style
What of the substances sucrose or water gives better formation of pollen tubes?
Answeri would think 20% sucrose solution
What is the function of the pollen tubes?
it sucks
What are the steps of pollination to the point that the seed is formed?
-pollen sticks to the stigma at the end of the pistil -pollen tubes grow down the pistil to the egg cells -sperm cells from the pollen moves down the tubes -fertilization combines DNA
How do two plants fertilize?
By sending their male gametes to the female gametes through their pollen tubes after germination of pollen grains.
On a flower what moves down to the ovary?
The male gametes in the pollen tubes.
Which part of the flowers do pollen tubes start to develop?
On the stigma of the carpel
Why sucrose cause the formation of pollen tubes?
it have starch to remove substance
Function of a style?
Style allows the growth of pollen tubes through it to the ovary
What does the ovary do to help a flower to make seeds?
Pollen goes down the pollen tubes from the stigma in the ovary are ovules. where the pollen fertilizes the ovules. afterward seeds are formed when the fruit is produced
What happens from the time pollen lands on the female part of the flower until the seed forms?
-pollen sticks to the stigma at the end of the pistil -pollen tubes grow down the pistil to the egg cells -sperm cells from the pollen moves down the tubes -fertilization combines DNA
What is siphonogamy?
A condition in plants in which pollen tubes are developed for the transfer of the male cells to the egg
What is the function of style of the plant?
To connect stigma with the ovary and facilitate the growth of pollen tubes
Why plants need pollen and spore?
plants need spores pollen and seeds to reproduce
