Webquest Brainstorm

I would like to do a webquest for first grade about how plants grow. On UEN I looked up the Core Standards for first grade and here is what it says:

Standard 3: Students will develop an understanding of their environment
Objective 1: Investigate plants and plant growth.
c. Observe and describe plants as they grow from seeds.

I would like for the students to discover what happens to a seed when it is planted and begins to grow. They will need to know the proper conditions (soil, sun, weather, shade) that most plants need in order to grow in a healthy manner. Since photosynthesis is a major component to plant growth, I will include that topic as well. I may also include in there why plants are important for humans and our environment. I hope I can find a virtual plant so the students can actually see all the stages and what it looks like.