Examlex
Which of the following is the light receptor responsible for detecting photoperiod?
Water
A chemical compound, H2O, essential for all known forms of life, characterized by its liquid state at room temperature and its ability to dissolve many substances.
Helium
Helium is a chemical element with symbol He and atomic number 2, known as the second lightest and second most abundant element in the observable universe, primarily used in cryogenics and as an inert gas shield in arc welding.
Lewis Structures
Diagrams that represent the valence electrons of atoms within a molecule, showing how they are bonded together.
Double Bond
A chemical bond in which two pairs of electrons are shared between two atoms.
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