Cell theory was proposed by

(1) a botanist

(2) a zoologist

(3) a botanist and a zoologist

(4) a psychologist.

The concept of "Omnis cellula-e-cellula" regarding cell division was first proposed by:
1. Aristotle
2. Rudolf Virchow
3. Theodore Schwann
4. Schleiden

Who first explained that new cells are formed from pre-existing cells

1. Theodore Schwann

2. Rudolf Virchow

3. Matthias Schleiden

4. Robert Hooke

Which one of the following is incorrect statement

(1) All organisms are composed of cells

(2) Cell is the basic unit of life

(3) All inanimate things are made up of cells

(4) Virus is acellular

Cell theory formulated by Schleiden and Schwann does not explain which one of the following features?

1.  Organisms are composed of cells and their products

2.  All cells are basically alike in their structure and metabolism

3.  New cells originate from pre-existing cells 

4.  The function of an organism is an outcome of activities and interactions of its constituent cells