You can take your kids outside and use the sunflower to to meet any of these standards.
Here is a link to a drawing you can use.
Life Sciences standard
Different types of plants and animals inhabit the earth. As a basis for understanding this concept:
Students know how to observe and describe similarities and differences in the appearance and behavior of plants and animals (e.g., seed-bearing plants, birds, fish, insects).
Students know stories sometimes give plants and animals attributes they do not really have.
Students know how to identify major structures of common plants and animals (e.g., stems, leaves, roots, arms, wings, legs).