The diagram below shows the flow of organic matter through an ecosystem. a special molecule known as beta-keratin makes up the feathers of birds. where do the birds in the above food web get the matter needed to make beta-keratin?
a.
directly from the sun's energy
b.
from the insects and worms they eat
c.
from their parents
d.
directly from bacteria

"do a testcross with a homozygous recessive plant."

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a

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