Cells of Robert Hooke were actually

Options

A. Cells walls
B. Protoplasts
C. Wall-less cells
D. Walled cells

Answer

To answer the question "Cells of Robert Hooke were actually," we can follow these steps:

### Step 1: Understand the Context
Robert Hooke was a scientist who is credited with the discovery of cells. He made this discovery while observing cork tissue under a microscope.

### Step 2: Identify What Hooke Observed
Hooke did not see living cells; instead, he observed the dead cells of cork. He described these cells as box-like structures, which resembled the compartments in a honeycomb.

### Step 3: Analyze the Options
- A. Walls: This option suggests that Hooke observed the walls of the cells.
- B. Protoplasts: Protoplasts refer to the living contents of a plant cell, which Hooke did not observe.
- C. Wall-less cells: This option is incorrect as Hooke specifically observed cells with walls.
- D. Walled cells: This option is correct as Hooke observed the cell walls of cork tissue.

### Step 4: Conclude the Answer
Based on the observations made by Hooke, the correct answer is D. walled cells, as he observed the cell walls of cork tissue.

### Final Answer
The cells of Robert Hooke were actually **D. walled cells**.

---