Read the following statement and find out the incorrect statement.

Options

A. Secondary metabolites are found in plant, fungal an miicrobial cells and we do not understand the role of these secondary metabolites in host organisms.
B. Many secondary metabolites like rubber, drugs, spices, scents and pigments are useful to human welfare.
C. Some secondary metabolites have ecological significance.
D. Flavonoids, antibiotics, coloured pigments and lecithin are secondary metabolites.

Explanation

To find the incorrect statement among the given options regarding secondary metabolites, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Examine Option 1**:
- The statement claims that secondary metabolites are found in plant, fungal, and microbial cells, and that we do not fully understand their role in host organelles.
- This statement is correct because secondary metabolites are indeed found in these organisms and their functions in host organelles are not well understood.

2. **Examine Option 2**:
- This option provides examples of secondary metabolites that are beneficial for human welfare, such as rubber, spices, and pigments.
- This statement is also correct as these secondary metabolites have significant uses in human life, including in food, medicine, and industry.

3. **Examine Option 3**:
- The statement mentions that some secondary metabolites have ecological significance.
- This is correct because secondary metabolites often play roles in plant defense, pollinator attraction, and other ecological interactions.

4. **Examine Option 4**:
- This option states that flavonoids, antibiotics, colored pigments, and lecithin are secondary metabolites, and it incorrectly claims that lecithin is a secondary metabolite.
- This statement is incorrect because lecithin is classified as a primary metabolite, while flavonoids, antibiotics, and colored pigments are indeed secondary metabolites.

### Conclusion:
- The incorrect statement is found in **Option 4**. Therefore, the correct answer is **Option 4**.