The fruit of the plant contains seeds. After the flower is pollinated, it develops into a fruit, which protects the seeds inside. The leaf makes food, the root absorbs water, and the stem supports the plant.

Understanding Plant Structures
Plants are composed of various parts, each playing a crucial role in their growth and reproduction. Among these parts, the fruit is specifically designed for seed development.
What is a Fruit?
- A fruit is the part of the plant that develops from the flower after fertilization.
- Its primary function is to protect and nurture the seeds until they are ready for dispersal.
Seed Development in Fruits
- When a flower is pollinated, its ovary begins to develop into a fruit.
- Inside the fruit, seeds are formed from the fertilized ovules of the flower.
- The fruit provides a safe environment for the seeds to mature.
Role of Seeds
- Seeds are essential for the reproduction of plants.
- They contain the genetic material necessary for creating a new plant.
- When conditions are favorable, seeds can germinate, giving rise to new plants.
Other Plant Parts and Their Functions
- Leaves: Primarily responsible for photosynthesis, converting sunlight into energy.
- Roots: Anchor the plant into the soil and absorb water and nutrients.
- Flowers: Responsible for reproduction, attracting pollinators and facilitating fertilization.
Conclusion
Thus, the correct answer to the question of which part of the plant contains seeds is indeed option 'D', the fruit. The fruit not only houses the seeds but also plays a vital role in ensuring the continuation of plant species.