The most common type of monitor is a(n) question 9 options: 1) liquid crystal display (lcd) 2) light-emitting diode (led) 3) organic light-emitting diode (oled) 4) cathode ray tube (crt)

The most common type of monitor is a liquid crystal display (lcd).
In liquid crystal display (LCD) to rotate polarized light, the pixels are switched on and of electronically using liquid crystal. George H. Heilmeier  is the person who invented this liquid crystal display. This technology is used in mobiles, tablets, notebooks etc.

Organelle is a sub-unit of cell and it is involved in performing specialized function within the cell. The type of organelles vary from organisms to organisms.

Explanation:

1. Centrioles are the cell organelles in which the spindle fibers are organized to which the chromosomes attach and mitotic division takes place. These are present only in animals and they are absent in plant and fungal cells.

2. Vacuoles are the storage organelles which store excess water, waste metabolites, sugars and other components in them. In plant cells they are of larger size whereas the vacuoles are small in size in case of the animal and fungal cells.

3. The plants cells and fungal cells have cell wall made up of cellulose (plants) and chitin (fungus) respectively. The cell wall is absent in animal cells.

4. The plant cells and fungal cells do not possess cilia and flagella for locomotion whereas animal cells have cilia and flagella.