The seed coat has two layers, the outer (a)____ and the inner (b)____

Answer

To answer the question regarding the two layers of the seed coat, we can break it down into a step-by-step solution:

1. **Understanding the Seed Coat**: The seed coat is the protective outer covering of a seed. It serves to protect the seed from physical damage and environmental factors.

2. **Identifying the Layers**: The seed coat consists of two distinct layers:
- The **outer layer** is known as the **testa**.
- The **inner layer** is referred to as the **tegmen**.

3. **Filling in the Blanks**: Based on the information provided:
- For the outer layer (a), the answer is **testa**.
- For the inner layer (b), the answer is **tegmen**.

4. **Final Statement**: Therefore, the completed statement is: The seed coat has two layers, the outer (a) **testa** and the inner (b) **tegmen**.