After germination, continued plant growth pushes first the shoot and then leaves through the soil. We would expect the emergent leaf cells to contain many _____________ for photosynthesis. Because the developing stem must support the plant, we would expect those cells to develop ______________. A) mitochondria; cilia B) leucoplasts; large vacuoles C) chloroplasts; thickened cell walls D) vacuoles; an extensive cytoskeleton