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Why do gymnosperms do not need water for fertilization?
The pollen grains (microsporophytes) have wing like appendages that allow them to be carried by the wind, so water is not needed only wind!
What is the difference between germination and pollination?
Pollination occurs when pollen reaches the pistil (female parts) of the flower. Fertilization occurs when the sperm cells of the flower fuses with the egg. Germination happens when the conditions are right the plant embryo germinates and begins to develop into a young plant. It is the only stage that does not include fertilization. Pollination is the first step fertilization the second and germination the third and final step.
Does pollen contain the sporophyte?
No, pollen grain does not contain the egg of the plant. It contains the male gamete of the plant.Egg of the plant is present in the ovaries.
Do all flowers have pollen in them?
No, they are only half of the equation. Pollen comes from the male parts of the flower. It is necessary for the fertilization of the female flower parts then the seed is fertilized and will be a mature seed that can grow. ----------------------------------------------- NO, pollen is the male gamete which joins with an ovule to make a plant seed.
Can seeds form without pollination?
No, because pollen is required for a pollen tube to be created for the sperm cells to move into the ovary and connect with egg cells (the process of fertilization). Because then the one of the pollen's cells will divide, forming two haploid sperm. When the pollen tube reaches the ovule in the ovary, it enters the embryo sac and releases both sperm cells. Then, two fertilizations (also called double-fertilization) take place.
Why used the mature pollen grain in pollen germination experiment?
this is because premature pollen grain do not contain the sperm cell for fertilization. only the generative nucleus in mature pollen grain will divide mitosisly to form sperm cell for fertilization
Why do plant produce so many pollan grains when only one pollen grain is needed for fertilization?
Because some won't find mates. To have the greatest chance of 'breeding' as many times as possible.
Is pollen living or non living?
I'm not 100% sure but i believe the pollen is living
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.
Why do gymnosperms do not need water for fertilization?
The pollen grains (microsporophytes) have wing like appendages that allow them to be carried by the wind, so water is not needed only wind!
What is the difference between germination and pollination?
Pollination occurs when pollen reaches the pistil (female parts) of the flower. Fertilization occurs when the sperm cells of the flower fuses with the egg. Germination happens when the conditions are right the plant embryo germinates and begins to develop into a young plant. It is the only stage that does not include fertilization. Pollination is the first step fertilization the second and germination the third and final step.
Does pollen contain the sporophyte?
No, pollen grain does not contain the egg of the plant. It contains the male gamete of the plant.Egg of the plant is present in the ovaries.
Do all flowers have pollen in them?
No, they are only half of the equation. Pollen comes from the male parts of the flower. It is necessary for the fertilization of the female flower parts then the seed is fertilized and will be a mature seed that can grow. ----------------------------------------------- NO, pollen is the male gamete which joins with an ovule to make a plant seed.
How many sperms are needed for fertilization?
Only one.
Why do pollen grain only produce tubes in flowers of their species?
because they dony like other species
Can seeds form without pollination?
No, because pollen is required for a pollen tube to be created for the sperm cells to move into the ovary and connect with egg cells (the process of fertilization). Because then the one of the pollen's cells will divide, forming two haploid sperm. When the pollen tube reaches the ovule in the ovary, it enters the embryo sac and releases both sperm cells. Then, two fertilizations (also called double-fertilization) take place.
Where does pollen grains form?
Pollen grains develop in the anthers of the staminae. In the anthers mostly four, but sometimes only two loculi are present.
