Students look at leaf structure, isolate chlorophyll and determine its absorption spectrum, and test hypotheses relating rate of photosynthesis to light intensity. A new section on hand section leaves and comparing leaf structure is included. Pathways of Fluid Movement in Plants . This lab has been refocused on the concepts of primary and secondary growth of vascular tissues as well as how form reflects function. A description of hand sectioning techniques has been added so that students may prepare some of their own materials.
Students study flower structure, gamete formation and fertilization.
New sections have been added on plant callus culture and hormone effects on cell differentiation. Another new section provides directions for testing the effects of giberellins on Wisconsin Fast Plant mutant dwarf strains. Section 5 Investigating Animal Form and Function Investigating the Digestive and Gas Exchange Systems . Students start their dissection of the fetal pig integrating microscopic and gross anatomy. They investigate the feeding behavior of Hydra and measure human lung capacities using a respirometer.