What type of tree is the oldest in the world?

What is the name of the substance that makes plants green?

What is the name of the fastest growing plant?

Name five things a Venus fly trap might eat.

Do plants make food in their stems, flowers, roots, or leaves?

Name two things a plant needs roots for.

How many kernels are on an ear of corn?

What is the largest type of plant in the world that does not have a wooden stem?

Why are cactus stems usually very thick?

In which direction do sunflowers point?

What do flowers produce?

What do ferns have instead of seeds?

How many species of plants exist on Earth?

What type of gas do animals and people need to stay alive?

What is the largest type of seed in the world?

How are strawberry seeds unique?

What African tree species has roots that are 120 meters deep?