Pollinia occur in

Options

A. Cruciferae
B. Asteraceae
C. Poaceae
D. Asclepiadaceae

Answer

**Step-by-Step Text Solution:**

1. **Understanding Pollinia**: Pollinia are a mass of pollen grains that are usually found in certain types of flowering plants. They are a specialized structure that aids in the process of pollination.

2. **Identifying Plants with Pollinia**: Pollinia are primarily found in the family Orchidaceae (orchids). This family is known for its unique reproductive structures, which include pollinia.

3. **Function of Pollinia**: The main function of pollinia is to facilitate the transfer of pollen from one flower to another, ensuring fertilization. When an insect visits an orchid flower, the pollinia can attach to the insect and be carried to another flower.

4. **Characteristics of Pollinia**: Pollinia are often sticky or have a mechanism that allows them to adhere to pollinators, which helps in effective pollen transfer.

5. **Conclusion**: Thus, pollinia occur specifically in orchids and some other related plant families that have evolved similar structures for effective pollination.