Diagrammatically represent sectional view of trophoblastic organisation in animals.

Explanation

### Step-by-Step Text Solution:

1. **Understanding Trophoblastic Organization**:
Trophoblastic organization refers to the arrangement of germ layers in animals, which are crucial for the development of various organs and tissues. In animals, there are three primary germ layers: ectoderm, mesoderm, and endoderm.

2. **Drawing the Germ Layers**:
- Start by drawing a horizontal line to represent the body of the animal.
- Above this line, draw the **ectoderm** layer. Label it as "Ectoderm". This is the outermost layer.
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