The fundamental unit of life · जीवन की मौलिक इकाई
A free Biology lesson for Class 9 children.
The cell is the basic structural and functional unit of life.
The plasma membrane is selectively permeable. It controls what enters and leaves.
Plant cells also have a rigid cell wall made of cellulose.
The nucleus controls the cell and holds the chromosomes.
Mitochondria release energy and are called the powerhouse of the cell.
Chloroplasts contain chlorophyll and make food by photosynthesis.
Plant cells have one large vacuole. Animal cells have small ones or none.