How many plants have gynoecium that is bicarpellary obligately placed and syncarpous with placenta swollen with many ovules ?
Brinjal, gram , tulip , Asparagus, arhar, petunia, chilli, Colchicum autumnale, muliathi, Aloe pea , tobacco, lupin

Options

A. Four
B. Five
C. Six
D. Three

Answer

To solve the question about how many plants have a gynoecium that is bicarpellary, obligately placed, syncarpous, and with a placenta swollen with many ovules, we can follow these steps:

### Step 1: Understand the Terms
- **Bicarpellary**: This means the ovary consists of two carpels.
- **Obliquely placed**: The carpels are positioned at an angle.
- **Syncarpous**: This indicates that the carpels are fused together.
- **Swollen placenta with many ovules**: This refers to the structure where ovules are attached, which is swollen and contains multiple ovules.

### Step 2: Identify the Family
From the video transcript, it is mentioned that these characteristics are typically found in the Solanaceae family.

### Step 3: List the Given Plants
The plants provided in the question are:
- Brinjal
- Gram
- Tulip
- Asparagus
- Arhar
- Petunia
- Chilli
- Colchicum autumnale
- Mulethi
- Aloe
- Pea
- Tobacco
- Lupin

### Step 4: Classify the Plants by Family
1. **Brinjal**: Solanaceae
2. **Gram**: Leguminaceae
3. **Tulip**: Liliaceae
4. **Asparagus**: Asparagaceae
5. **Arhar**: Leguminaceae
6. **Petunia**: Solanaceae
7. **Chilli**: Solanaceae
8. **Colchicum autumnale**: Colchicaceae
9. **Mulethi**: Asparagaceae
10. **Aloe**: Asphodelaceae
11. **Pea**: Leguminaceae
12. **Tobacco**: Solanaceae
13. **Lupin**: Leguminaceae

### Step 5: Identify the Relevant Plants
From the classification:
- **Brinjal** (Solanaceae)
- **Petunia** (Solanaceae)
- **Chilli** (Solanaceae)
- **Tobacco** (Solanaceae)

These four plants belong to the Solanaceae family and possess the characteristics mentioned in the question.

### Step 6: Count the Relevant Plants
The total number of plants that fit the criteria is **4** (Brinjal, Petunia, Chilli, and Tobacco).

### Conclusion
Thus, the answer to the question is **4**.

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