In each microsporangium , pollen grains formed , are released with the_____ of anther. These pollen grains of some plants, like_____ cause allergies and bronchial afflictions.
Choose the option with the pair of words which correctly fills the above blanks.

Options

A. dissociation , Hibiscus
B. dehydration , Viola
C. dehiscence, parthenium
D. dehiscence , Rose

Answer

To solve the question, we need to fill in the blanks with the appropriate terms related to the release of pollen grains from the anther and identify a plant that causes allergies.

### Step-by-Step Solution:

1. **Understanding Microsporangium and Anther**:
- The microsporangium is a structure where pollen grains are formed.
- The anther is the part of the stamen (male reproductive organ) that contains the microsporangia.

2. **Identifying the Release Mechanism**:
- Pollen grains are released from the anther through a process known as **dehiscence**. This is when the anther splits open to release the pollen grains.

3. **Identifying Plants that Cause Allergies**:
- The second part of the question asks for a type of plant that causes allergies.
- Among the options provided (Hibiscus, Viola, Parthenium, Rose), we need to identify which one is known for causing allergic reactions.

4. **Evaluating the Options**:
- **Hibiscus**: Generally does not cause allergies.
- **Viola**: Generally does not cause allergies.
- **Rose**: Generally does not cause allergies.
- **Parthenium**: Known as a weed that produces a large amount of pollen and is notorious for causing allergies and bronchial afflictions.

5. **Finalizing the Answer**:
- Therefore, the correct words to fill in the blanks are:
- First blank: **dehiscence**
- Second blank: **Parthenium**

### Complete Answer:
In each microsporangium, pollen grains formed are released with the **dehiscence** of the anther. These pollen grains of some plants, like **Parthenium**, cause allergies and bronchial afflictions.