UNIT 4 - NCERT

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UNIT 4The description of structure and variation of living organisms over aperiod of time, ended up as two, apparently irreconcilable perspectiveson biology. The two perspectives essentially rested on two levels oforganisation of life forms and phenomena. One described at organismicand above level of organisation while the second described at cellularand molecular level of organisation. The first resulted in ecology andrelated disciplines. The second resulted in physiology and of physiological processes, in flowering plants as anexample, is what is given in the chapters in this unit. The processes ofmineral nutrition of plants , photosynthesis, transport , respiration andultimately plant growth and development are described in molecularterms but in the context of cellular activities and even at organismlevel.

PLANT PHYSIOLOGY Chapter 11 Transport in Plants Chapter 12 Mineral Nutrition Chapter 13 Photosynthesis in Higher Plants Chapter 14 Respiration in Plants Chapter 15 Plant Growth and Development 2021-22. MELVIN CALVIN born in Minnesota in April, 1911, received his Ph.D. in Chemistry from the University of Minnesota. He served

  Transport, Plants, In plants, Transport in plant