Kaplan Nursing Entrance Practice Exam

What are the three parts of a pistil?

1. Stigma, ovule, seed

2. Style, petal, stigma

3. Stigma, style, ovary

4. Pollen, style, ovule

The correct answer is: Stigma, style, ovary

The three parts of a pistil are the stigma, style, and ovary. The stigma is the sticky part at the top that captures pollen grains, allowing for fertilization to occur. The style is the elongated stalk that connects the stigma to the ovary, serving as the pathway for pollen tubes to grow down to the ovary. The ovary houses the ovules, which develop into seeds once fertilization takes place. Understanding these components is crucial for grasping how flowering plants reproduce, as they play a key role in the process of pollination and fertilization. The stigma, style, and ovary collectively form the female reproductive structure of the flower, facilitating the important biological functions necessary for the continuation of plant species.