Soil Revision Quiz

Which type of soil has the best thermal capacity?

• Sand

• Soil

• Clay

Reorder the following starting with the most aerobic soil first, and finishing with the least

• Clay

• Sand

• Silt

Which of the following increases the rate of soil erosion?

• Terracing

• Annual crop

• Contour ploughing

• Tied ridges

Which of the following can tell you the type of soil you have?

• USLE

• Lincoln Index

• Simpson's Index

• Soil Triangle

Which type of soil has the highest nutrient content?

• Sand

• Silt

• Clay

Clay can absorb nutrient and water molecules - True or False

• True

• False

Which type of microorganism forms a symbiotic relationship with trees?

• Bacteria

• VIrus

• Protozoa

• Mycorrhizal Fungi

Which of the following is not a method of preventing soil erosion?

• Cattle farming

• Ploughing at 90 degrees to the slope

• Cultivating flat fields

• Zero tillage

Organize these options into the right categories

Groups:

(a) Methods of preventing soil erosion

,

(b) Exacerbating soil erosion

• Ploughing with the wind

• Zero tillage

• Cultivating steep slopes

• Contour ploughing

• Multi cropping

• Annual crop

• Windbreaks

• Removal of hedges and ditches

Which of the following is not a type of bacteria involved in nutrient cycling?

• Nitrogen fixing

• Saprophyte

• Denitrifying

• Nitrifying