How many plants in the list given below have marginal placentation : Mustard, Gram, Tulip, Asparagus, Arhar, Sun hemp, Chilli, Chochicine, onion, Moong, Pea, Tobacco, Lupin

Options

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

Answer

To determine how many plants in the provided list exhibit marginal placentation, we will analyze each plant based on their family characteristics and identify which ones belong to the family Fabaceae, known for this type of placentation.

### Step-by-Step Solution:

1. **Understand Marginal Placentation**:
- Marginal placentation occurs when ovules are arranged in a row along the ventral suture of the ovary. This is a characteristic feature of the Fabaceae family (legumes).

2. **List of Plants**:
- The plants given are: Mustard, Gram, Tulip, Asparagus, Arhar, Sun hemp, Chilli, Chochicine, Onion, Moong, Pea, Tobacco, Lupin.

3. **Identify Plants from the Fabaceae Family**:
- **Gram** (Cicer arietinum) - Legume, has marginal placentation.
- **Arhar** (Cajanus cajan) - Legume, has marginal placentation.
- **Sun Hemp** (Crotalaria juncea) - Legume, has marginal placentation.
- **Moong** (Vigna radiata) - Legume, has marginal placentation.
- **Pea** (Pisum sativum) - Legume, has marginal placentation.
- **Lupin** (Lupinus spp.) - Legume, has marginal placentation.

4. **Count the Plants with Marginal Placentation**:
- From the above analysis, the plants that exhibit marginal placentation are:
- Gram
- Arhar
- Sun Hemp
- Moong
- Pea
- Lupin
- Total = 6 plants.

5. **Conclusion**:
- Therefore, the total number of plants in the list that have marginal placentation is **6**.