Flower of Fabaceae is
(a) Complete, zygomorphic, pentamerous
(b) Complete, actinomorphic, trimerous
(c) Incomplete, zygomorphic, trimerous
(d) Incomplete, actinomorphic, pentamerous.

Options

A. Complete, zygomorphic, pentamerous
B. Complete, actinomorphic, trimerous
C. Incomplete, zygomorphic, trimerous
D. Incomplete, actinomorphic, pentam - erous.

Answer

To determine the correct characteristics of the flower of the Fabaceae family, we can analyze each option provided in the question step by step.

### Step 1: Understanding the Flower Structure
The flowers of the Fabaceae family, commonly known as the legume or pea family, have specific structural characteristics. They typically possess five petals, which is a key feature.

### Step 2: Identifying Flower Types
- **Complete Flower**: A flower that has all four whorls: calyx (sepals), corolla (petals), stamens (male reproductive organs), and pistil (female reproductive organ).
- **Incomplete Flower**: A flower that lacks one or more of these whorls.

### Step 3: Symmetry of the Flower
- **Zygomorphic Flower**: A flower that can be divided into two equal halves along only one plane. This is typical for flowers in the Fabaceae family.
- **Actinomorphic Flower**: A flower that can be divided into two equal halves along multiple planes.

### Step 4: Analyzing the Options
Now, let's analyze the options given in the question:

(a) **Complete, zygomorphic, pentamerous**: This option suggests that the flower has all whorls, is symmetrical in one plane, and has five petals. This matches the characteristics of Fabaceae.

(b) **Complete, actinomorphic, trimerous**: This option suggests that the flower has all whorls, is symmetrical in multiple planes, and has three petals. This does not match Fabaceae.

(c) **Incomplete, zygomorphic, trimerous**: This option suggests that the flower is missing some whorls, is symmetrical in one plane, and has three petals. This does not match Fabaceae.

(d) **Incomplete, actinomorphic, pentamerous**: This option suggests that the flower is missing some whorls, is symmetrical in multiple planes, and has five petals. This does not match Fabaceae.

### Step 5: Conclusion
Based on the analysis, the correct answer is:
**(a) Complete, zygomorphic, pentamerous**.