To protect themselves from extremes eg ;extremes of weather.
1. prevents the embryo from dehydration
2. protects the embryo from physical/ mechanical damage
3. protects the embryo from insects as well as bacteria and fungal infections
4. protects the embryo during seed dispersal: e.g. protects against the damage of stomach acid when seeds are eaten by animals.
The seed coat or testa is a protective covering that forms around the fertilized ovule.The multicellular seed coat is composed of sclerenchyma cells with very thick cell walls.
The coating is normally hard and water resistant, and is formed in the ovary shortly after fertilization from the integument.
The primary function of the testa is protection, but it also plays a significant role in seed dispersal; the thickness of the coating varies from species to species, and has to be broken down (or partially decomposed) for water to be able to reach the seed and initiate germination. This provides a delay in germination during which time the seed is hopefully moved further from the parent plant - thus reducing competition between the plant and "extending the range" of the species.
Once the correct conditions have been met for germination the seed coat will start to absorb water, soften and eventually split as the embryo inside starts to absorb water, swell and germinate.
It's there to protect the seed from dirt, bacteria or bugs from getting into the seed and causing problems or eating it.
Seed coat protects seed from the environement and drying out
cause it came out your mama
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The nut with the hardest shell is the macadamia nut. It is difficult to crack because the edible part is stuck to the inside of the shell.
Why do seeds have outer overing
2 outer shell electrons
It protects the seeds
The stratum corneum is the tough outer layer of the skin.
It is a shell, as in a cockle shell or oyster shell.
The outer layer of a seed is a rather tough shell, "designed" to protect the contents of the seed from harm.In short: No.
The outer shell. It is also edible.
Coconuts travel over seas by floating. The tough shell actually serves more as a shield to water than as a shield to blunt force.
Some seeds have an outer covering which makes it hard for insects and animals to get into. Sunflower seeds have a hard outer shell to protect itself from predators.
The exoskeleton is the hard outer shell of arthropods.
The tought outer outer shell protects the seed by not making i t able to crack. haha. CRACK! BUTT CRACK! ..thats FUNNY! :DD ! ~T.A.C South Carolina! 2-3-11
The nut with the hardest shell is the macadamia nut. It is difficult to crack because the edible part is stuck to the inside of the shell.
The seeds grow inside the seed pod which is a thick - woody type of material, some plant varieties have a harder outer shell than others.
It means tp scoop out the seeds and pulp from the middle, and cut off the tough outer rind.
An acorn is the nut of the oak tree, or the oak nut. Inside the tough shell of the acorn is usually only one seed and on rare occasions, two seeds.
Why do seeds have outer overing