Question

What is difference between us ?
(a) Plant cell and animal cell.
(b) Prokaryotic cell and eukaryotic cell.

Answer 1

a.

	Animal cell		Plant cell
i.	Animal cells are smaller in size.	i.	Plant cells are comparatively larger.
ii.	They lack a cell wall.	ii.	Cell wall is the outermost structure in a plant cell.
iii.	They lack plastids except Euglena.	iii.	Plastids are present in all plant cells.
iv.	Many vacuoles are present and they are smaller in size.	iv.	They have a single large central vacuole.
v.	They have centrioles.	v.	They lack centrioles.

b.

Characteristics	Prokaryotes	Eukaryotes
Size of the cell	Cells are small in size.	Cells vary in size and are generally larger than those in prokaryotes.
Nucleus	No nucleus with a nuclear membrane is present.	There is a well-defined nucleus with a nuclear membrane.
Membrane-enclosed organelles	Organelles having a membrane around them (e.g., mitochondria, plastids) are absent.	Membrane-enclosed organelles are present.
Cell wall	Cell wall is usually present. It is composed of peptidoglycan.	Cell wall is usually present in plant cells. It is composed of cellulose.
Genetic material	The genetic material is present as nucleoid, i.e., a properly defined nucleus is absent.	The genetic material is present inside the well-defined nucleus.