Plants:

Lycophytes were the first plants(still exist)
Some lycophytes evolved into scale trees(extinct), used to cover a lot, forest of them were very dense{good for coal}, they existed during the carboniferous period
Angiosperms(flower to reproduce) developed at the end of the cretaceous period(65 mya)

Plant cells:

Plants cells are eukaryotic cells and have rigid cell walls instead of flexible cell membranes.The cell walls are made of cellulose and lignin.

Plastids are organelles present in plant cells to make and store compounds that they need {started as bacteria similarly to mitochondria}
Chloroplasts are plastids where photosynthesis happens, they contain chlorophyll
Chlorophyll is a pigment that absorbs light

Central vacuole:

Used for storage of materials and wastes.
Maintains turgor pressure within the cells.
Turgor pressure is the pressure due to water on cell wall to maintain its structure.