Why are fruits usually sweet?

Gouse Basha By Gouse Basha , 18th Nov 2012 | Follow this author | RSS Feed | Short URL http://nut.bz/42yl3dq6/
Posted in Wikinut>News>Science


Fruits are sweet to make them palatable to animals ,and they generally also have eye -catching skin colours to make them clearly visible.Fruit contains seeds, stones or kernels which are swallowed by animals and excreted in a different location.

Nature of a fruit

Taste of a fruit


Fruits are sweet to make them palatable to animals ,and they generally also have eye -catching skin colours to make them clearly visible.Fruit contains seeds, stones or kernels which are swallowed by animals and excreted in a different location.In this way the plant distributes its seeds as widely as possible and maximises its chances of reproducing . Depending on the area covered by a moving animal,the seed may be distributed anywhere from just few metres to several hundred kilometres away where it originated.

Some seeds actually have to be eaten because they can only germinate after they have passed through the gut of an animal .This strategy also ensures that the germinating seed is proved with a good supply of fertiliser ,since it is expelled at the same time as a quantity of excrement.

Why do some poisonous fruits look so enticing?


poisonous plants also depend on animals for the distribution of their seeds, which is why they are never poisonous to all species. The seeds inside the bright red berries on yew trees, for example are poisonous to human and livestock, but produce no harmful effects when eaten by birds or rodents, or even by game animals, which can actually cause a great deal of damage to the plant. Deadly nightshade is also poisonous to humans and livestock, but its tempting shiny black fruit invites thrushes and other birds to eat their fill without any ill effects and thereby spread the seeds.


Why are plums covered in a layer of wax?


The layer of wax on plums is a water repellent that almost no moisture can penetrate. It protects the fruit from drying out and it also acts as a barrier against damaging micro- organisms.

As a matter of fact, all the parts of plants above ground are wrapped in a waxy layer , although this is not always as obvious as it is with plums and other fruits. had it not been for this protection against drying out, plants would never have been as successful as they have been in evolutionary terms.

Tags

Black Fruit, Poisonous Plant, Seed, Species

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author avatar Gouse Basha
Hi i am gouse .

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