For the sunflower (Helianthus annuus), the seed is a multilayered future plant that is enjoyed as a food source by many. What you see, when you have a sunflower seed, is the hard shell. It can be all black or striped. Break that open and you have the actual seed. The outer most covering on the seed, usually you don't notice it, is call the integumentary or seed coat.
The Testa or 'seed coat' is made from plant cellulose as in testes or testicle
sunflower
A sunflower seed is an achene which means a simple dry fruit. The sunflower seed are referred to as the fruit of the Sunflower because it is produce by the plant.
Nyjer seed does not have a shell like sunflowers. Wild birds eat all of the nyjer seed.
in late spring,sunflower seed will germinate
There is no need to do this with domesticated sunflower seed.
The shell of a sunflower which is white and black striped protects the seed inside of it. The seed, if planted becomes a sunflower plant.
No, it is a dicot.
if there is no seed coat the see won't grow
Aril .
The seed coat is important to the seed. The seed coat protects the seed from animals, wind, ice, rain and snow.
the seed coat