Flower sperm or pollen may be transported by wind, pollinators, or even humans. Pollinators may eat some of the pollen and accidentally rub the pollen on the female plant organ. Humans will use a Q tip to take pollen from one plant and put it on a plant of their choosing.
No, sperm must travel through the fallopian tubes to reach and fertilize an egg. Without the tubes, the sperm cannot reach the egg for fertilization to occur.
Yes, it is possible for 2 sperm to reach the egg, however only one will fertilize the egg. It isn't uncommon for more than 2 to reach the egg, depending how are along the egg is down the falopian tube. And how much sperm was ejaculated.
Puberty.
Puberty.
it enables the sperm to move around to reach the egg
If the sperm are not "healthy" or present in enough numbers they will will not have the ability to reach and female egg and then penetrate and fertilize then egg.
No, only one sperm can fertilize an egg.
No, sperm with no tails cannot fertilize an egg and result in pregnancy. The tail is essential for sperm motility and enables them to swim towards the egg. Without a tail, the sperm would be unable to reach the egg to fertilize it.
No, only one sperm can fertilize one egg.
Yes, sperm that has not reached full maturity can still fertilize an egg. While fully mature sperm may have better motility and function, immature sperm can still possess the ability to fertilize an egg.
Sperm produced by mosses require a film of water to reach an archegonium. The water helps in carrying the sperm to the archegonium, where fertilization occurs. Without water, the sperm would not be able to swim to reach the archegonium.
The eggs are fertilized before the female lays them, when she mates. The sperm swims to the eggs to fertilize them.