Fill in the blanks.

i. The name 'cell' was first used by the scientist ……………….

ii. The cell wall of the plant cell consists of the substance ……………….

iii. The cell wall is found only in the ………………. cell.

iv. ………………. is the powerhouse of the cell.

v. The cell membrane is ……………….

i. Robert Hooke observed a thin section of cork. The structure of section was like honeycomb means made of small compartments.

ii. Cellulose. Cell wall on outer side of cell membrane is present only in plant cell. Function of cell wall is plant cell protection.

iii. Plant cell. Cell wall on outer side of cell membrane is present only in plant cell. Function of cell wall is plant cell protection

iv. Mitochondria. Mitochondria produce energy from food material in cell and supply to whole cell because of its function it is called powerhouse of cell.

v. Outer covering. Cell membrane is the outer covering of cell, its structure is like very flexible, thin layer. Function is to maintain the shape of the cell.