Jump to main content

Ninth Grade, Plant Biology Projects, Lessons, Activities (26 results)

Search
Refine Results
Filter by
Sort by
Agrivoltaics: What Crops Grow Best Under Solar Panels?
Science Fair Project Idea
Scientific Method
We need farms for food, and we need solar panels for renewable energy — what if we could combine the two? Find out if certain crops can grow well under the partial shade of solar panels in this agrivoltaics science project. (Note: you do not need access to real solar panels to do this project, any other source of shade will work!) Read more
Are Soil Microorganisms Important for Plant Health?
Science Fair Project Idea
Scientific Method
Soil may look like a bunch of dirt, but good quality soil is actually a complex mixture of dirt, nutrients, microorganisms, insects and worms. What type of benefit do these microorganisms offer a growing plant? You can test this by baking soil in the oven to sterilize and kill the microorganisms. Do plants grown in sterile soil do better than plants in unsterilized soil? What about adding worms to one plant, but not to the other. Will the plant with worms grow better? Some insects are bad… Read more
Earthworm Castings — The Ideal Proportion in Soil for Young Garden Plants
Science Fair Project Idea
Scientific Method
Everybody knows that worms are good for the soil, but not everybody knows why. Here's a project that investigates just one of the ways earthworms improve the earth. Would earthworm castings (or earthworm manure) help your plants prosper and flourish? If so, how much should you use? Read more
Experiment with Factors that Affect Roundup® Weed Killer
Science Fair Project Idea
Scientific Method
Farmers are constantly battling various types of weeds that compete with the crops they are trying to grow. One of the tools they use to combat unwanted plants is a chemical called glyphosate. Glyphosate is the active ingredient in Roundup, a widely used weed killer. In this plant biology science fair project, you will explore the factors that affect the activity of glyphosate. Read more
How Do Flowers Develop?
Science Fair Project Idea
Scientific Method
Flower development is an important part of plant growth. When a plant has reached maturity, it needs to develop flowers in order to reproduce. The male and female parts of the flower have specialized structures for reproduction that develop as the plant matures. How do flowers develop over time? Which structures develop first? You can answer these questions by dissecting the flowers of a gladiola. Gladiola flowers grow and develop along the stem, with the most mature flowers opening at the… Read more
Rad Radishes: Effects of Irradiation on Seed Germination
Science Fair Project Idea
Scientific Method
DNA is the "instruction manual" for the successful growth of a living thing, from a single cell to a mature adult. When the DNA of an organism is somehow damaged, it can have an impact on the organism's development over time. In this plant science fair project, you will track how irradiation (exposure to radiation) of radish seeds affects germination (sprouting of a seedling from a seed). Read more
< 1 2 3

Explore Our Science Videos

Quick Links X
Top
Free science fair projects.