Which one of the following is correctly matched?

Options

A. Ginger-Sucker
B. Chlamydomonas - Conidia
C. Yeast - Zoospores
D. Onion - Bulb

Answer

To determine which option is correctly matched, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understand the term "sucker":**
- A sucker is a type of stem modification that allows for vegetative propagation. It is typically found in plants like banana, pineapple, and chrysanthemum, where lateral branches emerge from the underground part of the stem.

2. **Evaluate the first option (Sucker with Ginger):**
- Ginger is known for its underground stem modification called a rhizome, which is primarily for storage, not for vegetative propagation. Therefore, this combination is incorrect.

3. **Understand the term "cornidia":**
- Cornidia are a type of asexual spore found in fungi, particularly in yeast. They are not associated with Chlamydomonas, which is a unicellular green alga.

4. **Evaluate the second option (Chlamydomonas with Cornidia):**
- Since Chlamydomonas is not related to cornidia (which are found in yeast), this combination is also incorrect.

5. **Understand the term "bulb":**
- A bulb is a modified stem that serves multiple purposes, including storage of food and vegetative propagation. In onions, the bulb is formed from a condensed stem and fleshy leaves that store food.

6. **Evaluate the third option (Bulb with Onion):**
- The bulb of an onion is indeed a stem modification that stores food in its fleshy leaves. This combination is correct.

7. **Conclusion:**
- After evaluating all options, the correct match is **Option D: Bulb with Onion**.

### Final Answer:
The correctly matched option is **D: Bulb with Onion**.