What is the main function of the stigma in a flower?

What is the main function of the stigma in a flower?

• A. To Protect Ovules
• B. To Nourish The Ovary
• C. To Catch Pollen
• D. To Attract Pollinators

Answer: (C)

The main idea being tested is that the stigma’s job is to catch pollen. The stigma sits at the top of the pistil and is usually sticky or feathery so it can intercept pollen grains carried by wind or by pollinators. Once a grain lands and hydrates on the stigma, it germinates and grows a pollen tube down through the style to reach the ovules in the ovary, enabling fertilization. This catching function is essential for starting the process that leads to seed and fruit development. The other options don’t fit as the primary role of the stigma: protecting the ovules is mainly a job of the ovary and surrounding tissues, nourishing the ovary isn’t a direct task of the stigma, and attracting pollinators is more about petals, scents, and nectar than the stigma itself.

The main idea being tested is that the stigma’s job is to catch pollen. The stigma sits at the top of the pistil and is usually sticky or feathery so it can intercept pollen grains carried by wind or by pollinators. Once a grain lands and hydrates on the stigma, it germinates and grows a pollen tube down through the style to reach the ovules in the ovary, enabling fertilization. This catching function is essential for starting the process that leads to seed and fruit development.

The other options don’t fit as the primary role of the stigma: protecting the ovules is mainly a job of the ovary and surrounding tissues, nourishing the ovary isn’t a direct task of the stigma, and attracting pollinators is more about petals, scents, and nectar than the stigma itself.