____________are called digestive bags.

__________forms the lining of cavities such as the blood vessels and heart and the major cavities found with in the body.

__________is called powerhouse of the cell.

Who suggested the word 'Cell'?

__________is a spherical body present inside the nucleus.

____________forms the outer boundary of the cell.

The _____________is made of cellulose.

__________are responsible for passing genetic characteristics from the parents to the offsprings.

The size of the egg cell of Ostrich is _______________.