Phylogeny and inter-relationship found between taxa on the basis of number, type and arrangement of chromosomes is

Options

A. Cytotaxonomy
B. Chromotaxonomy
C. Karyotaxonomy
D. Chemotaxonomy.

Answer

To solve the question regarding the phylogeny and inter-relationship found between taxa based on the number, type, and arrangement of chromosomes, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- **Phylogeny** refers to the evolutionary history and relationships among individuals or groups of organisms.
- **Taxa** are groups of one or more populations of an organism or organisms that form a unit.

2. **Identify the Key Concept**:
- The question specifically asks about classification based on chromosomes, which includes their number, type, and arrangement.

3. **Evaluate the Options**:
- **Cytotaxonomy**: This is the classification based on cellular components, not specifically chromosomes.
- **Chromotaxonomy**: This involves classification based on chromatophores (pigments), which is unrelated to chromosomes.
- **Karyotaxonomy**: This term refers to the classification based on the number, type, and arrangement of chromosomes in the nucleus.
- **Chemotaxonomy**: This is based on the chemical composition of organisms, which does not pertain to chromosomes.

4. **Select the Correct Answer**:
- Since karyotaxonomy directly relates to the study of chromosomes, the correct answer to the question is **karyotaxonomy**.

### Final Answer:
The phylogeny and inter-relationship found between taxa on the basis of number, type, and arrangement of chromosomes is **karyotaxonomy**.

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