Define and understand the following terms:
(i) Phylum (ii) Class (iii) Family (iv) Order (v) Genus

Explanation

### Step-by-Step Text Solution:

1. **Phylum**:
- Definition: A phylum is the second highest taxonomic rank in the biological classification system, below the kingdom. It groups together organisms that share a basic structural framework and evolutionary lineage.
- Example: In the animal kingdom, the phylum Chordata includes all animals with a notochord, such as mammals, birds, reptiles, amphibians, and fish.

2. **Class**:
- Definition: A class is a taxonomic group that consists of one or more related orders. It is a subdivision of a phylum.
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