daday

Question 1

• [ ] the study of soil organisms and their processes

Question 2

• [ ] Give the importance SOIL MICROORGANISMS

Question 3

• [ ] art of the plant population which consists of individual too small to be clearly distinguished with the use of microscopes. Give example

Question 4

• [ ] organisms < 100 μm in size which feed on other microorganisms. Give example

Question 5

• [ ] organisms generally larger than the microfauna which feed on plants

Answer 5

other organisms give example

Question 6

• [ ] Some mammals, reptiles, and amphibians live in soil burrows. Give example

Question 7

• [ ] Some mammals, reptiles, and amphibians live in soil burrows. Give example
• [ ] Major Groups of Soil Organisms
• [ ] Probably the most important macro-animals in humid temperate region soils
• [ ]
• [ ] Enhance nutrient and soil translocation
• [ ]
• [ ] Enhance nutrient and soil translocation Scientific name
• [ ] •It is recognizable by the three distinct shades of color at its front end, and it is 6 centimetres (2.4 in) in length when not moving?
• [ ] live in the litter layer, living in the soil surface. Surface dwelling worms
• [ ] Organisms that have only one cell
• [ ] What are the biomass and size of a bacteria
• [ ] Classification of Bacteria based on Morphology
• [ ] capable of growing at 0°C
• [ ] optimum growth is at 25°C to 39°C
• [ ] can thrive only at high temperature 40- 80°C
• [ ] PRODUCE THEIR OWN FOOD FOR ENERGY (PHOTOSYNTHESIS)
• [ ] obtain their energy from sunlights. Example
• [ ] energy obtained from oxidation of inorganic compound such as carbon from carbon dioxide
• [ ] obtain their energy from the breakdown of organic materials. EAT OTHER ORGANISM TO GET ENERGY (CONSUMERS)
• [ ] capable of fixing atmospheric nitrogen to ammonia
• [ ] conversion of ammonia to nitrite
• [ ] conversion of nitrite to nitrate
• [ ] Conversion of nitrate to atmospheric algae
• [ ] They are responsible for the characteristically “earthy” smell of freshly turned, healthy soil. Resemble molds and high ph levels.
• [ ] an association between fungi and plant roots which help plants in solubilization of Phosphorus and its absorption.
• [ ] fungi that obtain their food either by infecting living organisms
• [ ] attack on dead organic matter
• [ ] Principally thrives in aquatic environment, loves moist habitat. The most important and abundant photosynthetic microorganisms in the soil. They are capable of Nitrogen Fixation.
• [ ] The simplest and most abundant soil animal
• [ ] Commonly called thread worms or eelworms
• [ ] Effects of Organic Matter to Soil Properties
• [ ] Refers to the totality of all carbon-containing compounds in the soil derived from either plants or animals.
• [ ] Enhances soil aggregation and aggregate stability
• [ ] Increases Cation Exchange Capacity Increases soil buffering capacity.
• [ ] Provides carbon and energy to soil organisms and thus increases their diversity and activity.
• [ ] is a convenient tool for predicting the rate of decomposition and regulating the quantity of mineral nitrogen available to plant.
• [ ] 20/1 is the optimum C/N ratio of organic materials for
• [ ] > 30:1 (wide)- Difficult to decompose, favors
• [ ] •< 30:1 (narrow)- Have higher nitrogen content, favors.l
  Soil OM (humus)
  Bark of trees
  Rice Straw
  Cattle Manure M
  Poultry Manur
  
  • [x] conversion of organic N to inorganic
• [x] conversion of inorganic N to organic
• [x] The biological formation of NO3- (Nitrate) or NO2 (Nitrite) from compound containing reduced nitrogen.
• [x] Denitrificans reduce the Nitrate to Nitrite then to gaseous nitrogen forms.
• [x] Breakdown of organic matter such as dead animals and plants or waste materials. This breakdown is accomplished by microorganisms which utilize dead organic material for their energy.
• [x] occurs only in an association of a plant root (leguminous plant) and a microorganism (bacteria) belonging to the genus of Rhizobium.
• [x] which is brought about by certain free-living bacteria and blue-green algae.
• [x] Types of Nitrogen Fixation
• [x] organic residues or a mixture of organic residues and soil, that have been piled moistened and allowed to undergo biological decomposition.
• [ ] practice of making humus like organic materials outside of the soil by mixing, piling or otherwise storing organic materials under conditions conducive to aerobic decomposition.