Petals and Sepals Are Thought to Have Evolved Most Directly

question 39

True/False

Petals and sepals are thought to have evolved most directly from stems.
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Definitions:

FBF Bond Angle

Refers specifically to the bond angle in a molecule of BF3 (Boron Trifluoride), where the three atoms of fluorine are bonded to a central boron atom, typically close to 120 degrees due to the trigonal planar shape.

Single Bond

A chemical bond involving two atoms sharing one pair of electrons, represented by a single line between the atoms.

Free Rotation

The ability of single bonds to rotate freely, allowing molecules to adopt different conformations.

Carbon-carbon Bond

A chemical bond between two carbon atoms, foundational to organic chemistry and the basis of the structure of organic molecules.