From which germ layer do the following organs differentiated
(i) Kidney (ii) Urinary bladder

Explanation

To determine the germ layer from which the kidney and urinary bladder differentiate, we need to understand the roles of the three primary germ layers: ectoderm, mesoderm, and endoderm.

### Step-by-Step Solution:

1. **Identify the Germ Layers**:
- There are three primary germ layers in embryonic development:
- **Ectoderm**: The outermost layer, which develops into the skin and nervous system.
- **Mesoderm**: The middle layer, which forms muscles, bones, and the circulatory system.
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