Muscles occur in antagonistic pairs because:a
they are incapable of working agonistically.
b. actin and myosin filaments can only move in one direction.
c. both contraction and extension would cause an oxygen debt.
d. contraction is voluntary, while relaxation is involuntary.
e. they are only capable of contracting and not pushing.
E
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A female aphid reproduces parthenogenetically to create a colony of 10 clones of herself. Five of these individuals become "soldiers" and do not reproduce; instead, they defend the other five reproductive individuals from predatory insects
Consider a single soldier and a single reproductive female. From the soldier's perspective, each of that reproductive female's offspring are genetically equivalent to the soldier's own: A. siblings. B. offspring. C. nieces/nephews. D. first cousins. E. grandchildren.
What is the portion of a dicot seedling below the cotyledons called?
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