Bring out that the concave appearance indicates shrinkage resulting from loss of food from the seed. After the study of the last picture on page 60, one or two of the live bean plants growing in the room should be lifted from the soil. ... made because pupils have recognized the relationship of these facts: (1) Food is made in the green parts of a plant; and (2) almost all the green coloring is in the leaves.
|Title||:||Guidebook for How Do We Know?|
|Author||:||Wilbur Lee Beauchamp|