1. Which of the following is NOT TRUE about vertebrates?A. They have backbones.B. They have soft body with no bones.C. They are born alive or hatched from eggs.D. They can live on land and water.
COARSE ADJUSTMENT KNOB — A rapid control which allows for quick focusing by moving the objective lens or stage up and down. It is used for initial focusing.
The bottom of the microscope, used for support. Illuminator: A steady light source (110 volts) used in place of a mirror. If your microscope has a mirror, it is used to reflect light from an external light source up through the bottom of the stage.