Week 3: Mineral nutrition: Soil as a source of minerals. Passive and active transport of nutrients.
Soil contains minerals and organic matters. The minerals matter composed of peebles, sand and clay while the organic matter consists of decomposes remains of organisms called humas. The clay, humas and soil solution are important sources of minerals. The different theories involve for passive absorption are
- Diffusion theory
- Mass flow
- Ions exchange
- Donnan equilibrium theory
In case of active absorption of minerals, the concentration of minerals solute is much higher in absorbing cell than outside in most cases. This increased concentration of minerals in the cells is called solute acummulation which is selective process against the concentration gradient require energy.
Course Material
- Week 1: Water relations to plants (water potential, osmotic potential, pressure potential, matric potential).
- Week 2: Absorption and translocation of water. Stomata regulation.
- Week 3: Mineral nutrition: Soil as a source of minerals. Passive and active transport of nutrients.
- Week 4: Essential mineral elements, role and deficiency symptoms of macronutrients.
- Week 5: Photosynthesis: Introduction, Oxygenic and non-oxygenic photosynthesis Mechanism: light reactions (electron transport and photophosphorylation) and dark reactions (Calvin cycle).
- Week 6: Differences between C3 and C4plants.Factors affecting this process, Products of photosynthesis.
- Week 7: Respiration:Definition and respiratory substrates. Mechanism of Glycolysis,Krebscycle.
- Week 8: Electron transport and oxidative phosphorylation, Anaerobicrespiration
- Week 9: Mid term examination
- Week 10: Energy balance in aerobic and anaerobic respiration, Respiratory quotients
- Week 11: Introduction, aims and applications of ecology
- Week 12: Physical and Chemical properties of soil (soil formation, texture. pH, EC, organism and organic matter etc.) and their relationships to plants
- Week 13: Light and Temperature. Quality of light, diurnal and seasonal variations. Ecophysiological responses.
- Week 14: Field capacity and soil water holding capacity. Characteristics of xerophytes and hydrophytes. Effect of precipitation on distribution of plants
- Week 16: Community Ecology, Ecological characteristics of plant community, Methods of sampling vegetation (Quadrate and line intercept), Major vegetation types of the local area.
- Week 18: Final Term Examination
- Week 15: Wind as an ecological factor and its importance. Population ecology: introduction, a brief discription of seed dispersal and seed bank
- Chapters 17
- Department Chemistry
- Teacher
Mr. Asghar Ali Ansari
