What is cell wall? Describe its ultra structure. What is its function?

What is ER? Describe its ultra structure. What is its function?

What is G.B.? Describe its ultrastructure. What is its function? Describe its process of secretion.

What is centrosome? Describe its ultrastructure. State the functions of centrosome.

What is ribosome? Describe its ultra structure. Why ribosome is called as "protein factory"? What is its function? What is the role of ribosome in protein synthesis?

What is nucleus? Why is its called as "brain of the cell"? Describe its ultrastructure with diagram. What are the functions of it?

What is lymph ? Describe its function.

What is venation ? Describe the structure of a leaf. What is the function of venation?

What is placenta ? Describe its functions.

What is cell wall? What are its function?