Among mammals, a significant role in the digestion of milk is played by :

Options

A. Rennin
B. Invertase
C. Amylase
D. Intestinal bacteria

Answer

**Step-by-Step Solution:**

1. **Understanding Milk Digestion in Mammals**: In mammals, the digestion of milk is primarily important for infants who rely on milk as their main source of nutrition.

2. **Identifying Key Enzymes**: The digestion of milk involves specific enzymes that break down its components. The two main enzymes involved in milk digestion are:
- **Caseinogen**: This is a precursor to casein, the main protein found in milk. It is converted into casein when it interacts with certain enzymes.
- **Renin**: This enzyme is particularly significant in infants. It helps in coagulating milk, allowing for better digestion.

3. **Role of Renin**: Renin is produced in the stomach of young mammals and plays a crucial role in curdling milk. This process allows the milk proteins to be more effectively digested by other enzymes.

4. **Conclusion**: Among mammals, the enzyme that plays a significant role in the digestion of milk is **Renin**.

**Final Answer**: Renin

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