select the incorrect statement.

Options

A. reproduction is a characteristics of living organism
B. cellular organisation of the body is the defining feature of life forms
C. increase in mass and increase in number of cells are twin characteristics of growth
D. consciousness is not defining feature of living organism.

Answer

To solve the question of selecting the incorrect statement regarding characteristics of living organisms, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Evaluate Option 1: Reproduction is a characteristic of living organisms.**
- Reproduction is indeed a fundamental characteristic of living organisms. Non-living things do not reproduce. Therefore, this statement is **correct**.

2. **Evaluate Option 2: Cellular organization of the body is the defining feature of living form.**
- Living organisms are made up of cells, which are considered the basic unit of life. The presence of cellular organization is essential for defining living forms. Thus, this statement is **correct**.

3. **Evaluate Option 3: Increase in mass and increase in number of cells are twin characteristics of growth.**
- Growth in living organisms involves both an increase in cell number (through cell division) and an increase in mass. This statement accurately describes the growth process in living organisms, making it **correct**.

4. **Evaluate Option 4: Consciousness is not a defining feature of the living organism.**
- Consciousness is often considered a defining feature of living organisms, as it relates to their ability to respond to stimuli and interact with their environment. The statement that consciousness is not a defining feature is therefore **incorrect**.

### Conclusion:
The incorrect statement among the options provided is **Option 4**.

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