Ornamental belonging to family Liliaceae are
(a) tulip and Petunia
(b) gloriosa and tulip
(c) gloriosa and lupin
(d) lupin and Sesbania

Options

A. tulip and Petunia
B. glorioas and tulip
C. glorioas and lupin
D. lupin and Sesbania

Answer

To solve the question regarding which ornamental plants belong to the family Liliaceae, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding the Family Liliaceae**:
- The Liliaceae family, commonly known as the lily family, consists primarily of monocots. It includes various ornamental plants.

2. **Analyzing Each Option**:
- **Option (a): Tulip and Petunia**
- Tulip is a well-known ornamental plant that belongs to the Liliaceae family.
- Petunia, however, belongs to the Solanaceae family (nightshade family), which is a dicot. Therefore, this option cannot be correct.

- **Option (b): Gloriosa and Tulip**
- Gloriosa is another ornamental plant that belongs to the Liliaceae family.
- Tulip, as previously mentioned, also belongs to the Liliaceae family.
- Since both plants in this option belong to the Liliaceae family, this option is correct.

- **Option (c): Gloriosa and Lupin**
- Gloriosa belongs to the Liliaceae family.
- Lupin (genus Lupinus) belongs to the family Fabaceae (legumes), which is a different family. Therefore, this option cannot be correct.

- **Option (d): Lupin and Sesbania**
- As stated earlier, Lupin belongs to the Fabaceae family.
- Sesbania is also a genus of flowering plants that belongs to the Fabaceae family. Thus, neither plant belongs to the Liliaceae family, making this option incorrect.

3. **Conclusion**:
- After analyzing all options, the only correct answer is **Option (b): Gloriosa and Tulip**, as both belong to the Liliaceae family.

### Final Answer:
**(b) Gloriosa and Tulip**