Each anther is usually (a)____ and each lobe has (b)____ chambers

Answer

**Step-by-Step Solution:**

1. **Understanding the Structure of Anther:**
- The anther is a crucial part of the male reproductive system in flowering plants. It is responsible for producing pollen grains, which are the male gametophytes.

2. **Identifying the Shape of Anther:**
- The anther is typically described as having a specific shape. In this case, it is referred to as "bilobed," meaning it has two lobes.

3. **Examining the Lobes of Anther:**
- Each lobe of the anther contains chambers. These chambers are where the pollen grains are developed.

4. **Counting the Chambers in Each Lobe:**
- Each lobe of the anther contains four chambers where the process of microsporogenesis takes place, leading to the formation of pollen grains.

5. **Final Answers:**
- Therefore, the answers to the blanks in the question are:
- (a) Bilobed
- (b) Four

**Final Answer:**
Each anther is usually (a) **bilobed** and each lobe has (b) **four** chambers.

---