Chapter 1: Gravity Sensing, Graviorientation and Microgravity.- Chapter 2: Methods for Gravitational Biology Research.- Chapter 3: Gravitaxis in Flagellates and Ciliates.- Chapter 4: Gravitropism in Tip-Growing Rhizoids and Protonemata of Characean Algae.- Chapter 5: Gravitropism in Fungi, Mosses and Ferns.- Chapter 6: Gravitropism in Higher Plants: Cellular Aspects.- Chapter 7: Gravitropism in Higher Plants: Molecular Aspects.- Chapter 8: Bioregenerative Life Support Systems in Space Research. sakriti opis