Which germ layer forms nervous system eye pituitary gland and intermal ear

Explanation

To answer the question about which germ layer forms the nervous system, eye, pituitary gland, and internal ear, we can break down the solution into the following steps:

### Step-by-Step Solution:

1. **Understanding Germ Layers**:
- During embryonic development, the zygote undergoes cleavage to form a blastocyst, which eventually develops into a structure called the gastrula. The gastrula consists of three primary germ layers: ectoderm, mesoderm, and endoderm.

2. **Identifying the Germ Layers**:
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