how are sycamore seeds dispersed by wind ? and how are apples dispersed by animals?

Question

i forgot

Answer 1

The sycamore seeds are small and light enough that they fly into the wind when it blows across the tree. The seeds land far away and take root. Apple seeds, on the other hand, are held inside a heavy fruit that falls straight down to the ground. If the seed took root there, it would die in its parent's shadow. However, this doesn't happen because the apple will usually be eaten by an animal. Later, the animal eventually excretes the waste from its meal, which will include the undigestible seed. That's how the apple seeds move from the parent tree's location.

Answer 2

Sycamore Seed Dispersal

Answer 3

Sycamore trees are a member of the acer family, all of which use wind dispersal of seeds. This is achieved by the "helecopter" style rotation of the seed pods, that enable them to be caught by the wind and travel a short distance from the parent tree.

Apple seeds are contained within the fruit itself. The fruit has evolved to provide an attractive meal for many animals (mammals mostly). Upon consumption of the apples, the seeds are ingested and transported within the body of the animal. These seeds are then deposited at a new location when the animal deffocates. It is intresting to note that some fruit seeds benefit from not just the transportation element of this mode of dispersion, but they also from being semi-digested, thereby enabling them to germinate more easily.

Special Raoul

Answer 4

Sycamore seeds are like little helicopters as we used to call them when we were kids! With a seed the size of a pea and an inch long light weight protrusion like a leaf. When this dries on the tree by the sun a gust of wind will blow them off the tree. The weight of the seed propels the stalk thing to spin the seed as it is carried by the wind.............When an apple falls from a tree to the ground an animal will come along and eat it. It is digested all but the pips. The animal then poops the seeds out!

Answer 5

Sycamore seeds are designed to float to Earth very slowly. If there is a wind blowing while they fall, they therefore trval a long way sideways on their way down.

Apples (and in fact all fruits) work by being eaten. The animal eats the fruit (including the seeds in the middle as they're not all as fussy as humans), and then walk off somewhere. Eventually the seeds work their way through the digestive system (mostly surviving), and get deposited a long way from their parent plant, in a handy lump of fertiliser!

Answer 6

Sycamores make a little 1" diam. ball , and amazingly there are tons of seeds attached. It all dries up, just like a flower seed does, and it either falls to the ground, or the wind blows the seeds through the air. Apples....duh ! animal eats apple. animal has seeds in feces. you can guess the rest, Einstein !

Answer 7

The seeds are shaped like aircraft propellers. When they drop from the tree, they rotate rapidly, slowing their rate of fall. This allows any wind to drift them away from the source tree, where, hopefully they will land a distance from the tree, in the open so that sunlight reaches them, and assists germination and growth.
Apples are eaten by animals, and the seeds inside are digested. The animal wanders away, then passes the seeds in it´s feces...voila! Seed is now spread.

Answer 8

Why have you put this question on twice?