1) No cells do not look alike in terms of shape and size because different shapes and structures are needed for different tasks.
2) All cells do not look alike in structure their structure depends on the function they form and the environment they live in, for example, a nerve cell differs from a sperm cell.
3) Yes, we can find differences in cells from various parts of the plant body. There are different cells in a plant body. They have original structures and perform different functions. So, root cells could differ from the cells present in stems or leaves.
4) There are different cells. But prokaryotes and eukaryotes are true cell structures and types. The similarity between them is that the genetic material that is the DNA is common between the two cells.
