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- O False 31. The CEC of a given soil horizon is determined by the relative amounts of different colloids in that soil and by the CEC of each of thes colloids. O True OFalse 2 points 32 CENUINE LATHERSource Sieve tube Punca Tiub tapis Substance V Bahan V Molecule W Molekul W Osmosis Sink Sinki Substance V Bahan V Molecule W Molekul W Figure 2 Rajah 2 Give an example of a plant organ that functions as the source and the sink in the transport above. Berikan contoh organ tumbuhan yang berfungsi sebagai punca dan sinki dalam pengangkutan di atas. Source Punca: Sink Sinki: ...of this practice with respect to plant nutrition?3. WHAT IF? How would adding clay to loamy soil affectcapacity to exchange cations and retain water? Explain.
- O False 5. The percentage of pore space of a soil with a bulk density of 1.2 2 points Mg/m and a particle density of 3.21 Mg/m³ is 37.4%. O True O False ntoin onvironmental 2 poinLength of Root T Ang lira 12/8/0) ssoW Growth of Wheat Root Tips 3. Biologists investigated the effect of the presence of aluminum ions on root tips of a variety of wheat. They removed 2-mm sections of the tips of roots. Half of the root tips were placed in a nutrient solution with aluminum ions, while the other half were placed in an identical nutrient solution without aluminum ions. The length of the root tips, in millimeters, was measured every hour for seven hours. The results are shown in the data table below. Data Table Length of Root Tipe in Solution With Aluminum Length of Root Tips in Solution Without Aluminum (n) (uu) suoj (wu) suol 2.0 O= Root lips in 2.1 2.2 2.4 2.8 unujune suo 2.4 2.6 2.7 uognyos u nounm 5 3.2 2.8 3.7 unurunje SUo 2.8 6'E () aun Using the information in the grid, following the directions below. data table, construct a line graph on d. Describe the effect of aluminum ions on the growth of the root tips of wheat. a. Mark an appropriate scale on each axis. b.…Which factors affect soil quality? chemical composition history of the soil presence of living organisms and topography cl. all of the above
- Figure 31.6 Soil compaction can result when soil is compressed by heavy machinery or even foot traffic. How might this compaction change the soil composition?Q-12. Complete the table:- Things directly related to Soil Things indirectly related to SoilTreatment Control Soil warming Soil warming x Year * 1.0 Year * 0.5 Active Layer Seasonal N mineralization (g N/ m²/ year)
- 19. A well-granulated soil structure has more total pore space and greater overall water holding capacity than one with poor granulation or one that has been compacted. O True O False OENUNGWhich three soil colours would suggest the following conditions in the soil 1. Poor drainage 2. Reduced compounds of manganese 3. Well drained and aeration soilSoil colour may indicate soil's exposure to anaerobic conditions 1. True 2. False