Serious question--do sperm differ in size according to the animal they came from?

Question

Different species have different sizes of penises--but are all sperm the same size? And do they all look the same as human sperm (tadpole-like)?

Answer 1

They actually can differ somewhat in size. And ironically, not always proportional to the animal. I know that some fruit flies have sperm that are 300 times longer than the human kind. (But still pretty small at 1.76 mm.)

I would expect them all to have pretty close to the familiar shape, because they need to swim.

Answer 2

yes, there are variable slides of different species of animals and plants sperm that can be seen under microscope.

Most sperm of nature is uni-flagellate, but even in humans about 20% or more of sperm are abnormal and may have two heads or tails, even three. The sperm of moss, liverworts and ferns are actually biciliate, but still swim to the female.

Answer 3

They have a wide range of sizes because the media they have to travel and the length they have to complete are very different.
In size there are slight differences, but wedge formed heads are more common.
Still there is ameboid sperm, like in nematodes, they don't have a whip tail, because they don't need one. In female conducts they can advance better this way, since nematodes are build like water filled balloons, their sex ducts are so tight, a normal sperm could not advance, so ameboid movement is better.

Answer 4

There is no appreciable difference in the size of the sperm cell from different species of mammals.

Answer 5

I would be willing to wager that they do differ in size and shape. In fact I would be astounished if they were the same.

Answer 6

Yes.