Flower of a typical Liliaceae member differs from that of Fabaceae in

Options

A. Symmetry, Position of gynoecium, Nature of perianth, Merosity
B. Symmetry, Position ofodd perianth member, Nature of pistil, Number of floral whorls
C. Symmetry, Nature of androecium, Sexuality, Placentation
D. Symmetry, Merosity, Sexuality, Presence of bract

Answer

To answer the question regarding how the flower of a typical member of the Liliaceae family differs from that of the Fabaceae family, we can follow these steps:

### Step 1: Understand the Basic Structure of Flowers
Flowers are composed of four main whorls:
1. **Calyx** - the outermost whorl made up of sepals.
2. **Corolla** - the second whorl made up of petals.
3. **Androsium** - the third whorl consisting of stamens (male reproductive organs).
4. **Gynosium** - the innermost whorl consisting of carpels (female reproductive organs).

### Step 2: Identify the Families
- **Liliaceae**: This family includes monocotyledonous flowering plants. A typical flower from this family exhibits certain characteristics.
- **Fabaceae**: This family consists of dicotyledonous flowering plants, commonly known as the legume family.

### Step 3: Compare Flower Symmetry
- **Liliaceae**: Flowers typically exhibit **radial symmetry** (actinomorphic), meaning they can be divided into identical halves through multiple planes.
- **Fabaceae**: Flowers usually show **bilateral symmetry** (zygomorphic), where they can only be divided into two identical halves through a single plane.

### Step 4: Examine the Gynosium
- **Liliaceae**: Typically has a **tricarpellary** condition, meaning there are three carpels.
- **Fabaceae**: Generally has a **monocarpellary** condition, meaning there is one carpel.

### Step 5: Analyze the Perianth
- **Liliaceae**: The calyx and corolla are not distinct; they form a single whorl known as **perianth** with structures called **tepals**.
- **Fabaceae**: The calyx and corolla are distinct, with separate sepals and petals.

### Step 6: Consider the Merosity
- **Liliaceae**: Floral parts are typically in multiples of three (trimerous).
- **Fabaceae**: Floral parts are usually in multiples of five (pentamerous).

### Step 7: Summarize the Differences
Based on the above comparisons, the flowers of Liliaceae differ from those of Fabaceae in:
- **Symmetry**: Radial vs. Bilateral
- **Gynosium Structure**: Tricarpellary vs. Monocarpellary
- **Nature of Perianth**: Presence of perianth vs. distinct calyx and corolla
- **Merosity**: Multiples of three vs. multiples of five

### Conclusion
The most significant differences between the flowers of Liliaceae and Fabaceae are in their symmetry, structure of the gynosium, nature of the perianth, and merosity.

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