Baby corn experienced her first internode today! It's small, but still there. Remember, this is the area between the nodes. Baby tomato is a beaut. You may also see how baby tomato is growing towards the window, or actually the light coming in the window! This is because of phototropism which is a plants growth in response to light. Tomato is growing towards the light because the cells on tomato that are farthest from the light have a chemical hormone called auxin which causes the plant to have elongated cells on the farthest side from the light, bending the plant towards the stimuli. Another hormone that plants have is cytokinins which promotes cell division (cytokinesis) in plant roots and shoots. When baby tomato and corn first started sprouting it was because of cytokinins promoting cell growth! This growth takes place in the meristem, which is the site of repeated cell division. Primary growth occurs at the apical meristems where the structure is elongated and secondary growth occurs at the vascular cambium and cortex cambium, where the structure is increased in width.
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