Read the following statement and find out the incorrect statement.

Options

A. The altered understanding that fungi and members of the monera and protista having cell walls have now been excluded from planate.
B. Cyanobacteria that are also referred to as blue green algae are not 'algae' any more
C. Numerical taxonomy is based on chromosome number structure and behaviour.
D. Chemotaxonomy that uses the chemical constituents of the plant to resolve confusion, are also used by taxonomies these days.

Answer

To solve the question, we need to identify the incorrect statement among the four provided statements. Let's analyze each statement step by step.

### Step 1: Analyze the Statements

1. **Statement 1**: "The altered understanding that fungi and members of the Monera and Protista having cell walls have now been excluded from plant A."
- This statement is correct. Fungi, Monera (bacteria), and Protista are indeed classified separately from the plant kingdom based on their characteristics.

2. **Statement 2**: "Prokaryotes, single-celled eukaryotes, multicellular eukaryotes, and fungi of heterotrophic organism are found in Monera kingdom."
- This statement is also correct. The Monera kingdom includes prokaryotic organisms (bacteria) and some single-celled eukaryotes.

3. **Statement 3**: "Numerical taxonomy is based on chromosome number, structure and behavior."
- This statement is incorrect. Numerical taxonomy is based on observable characteristics of organisms, not specifically on chromosome number or structure. The study of chromosomes falls under cytotaxonomy.

4. **Statement 4**: "Chemotaxonomy where we discuss chemical constituents of plants to resolve confusion."
- This statement is correct. Chemotaxonomy involves the classification of organisms based on their chemical constituents.

### Step 2: Conclusion
The incorrect statement is **Statement 3**: "Numerical taxonomy is based on chromosome number, structure and behavior."