An anther with malfunctioning tapetum often fails of produce viable male gametophytes. Give one reason.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Role of Tapetum:**
- The tapetum is a layer of cells within the anther that plays a crucial role in the development of pollen grains (male gametophytes).
- It provides essential nutrients and support for the developing microspores, which eventually become pollen grains.

2. **Identifying the Problem:**
- If the tapetum is malfunctioning, it means it is not performing its role effectively.
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