A. fine-grained
B. Dark coloured
C. both A & B
D. None of the above
Submitted by: Shafiq Rehman
Correct Answer: both A & B ✔
Last Updated: October 14, 2020
Related MCQs
- ‘A’ horizon of the soil is also designated:
- Weathering process-physical, chemical, and biological __________, the rocks and minerals into simpler products which either accumulate in place or are transported to other places where they become soil parent materials?
- Rocks and weathered materials transported by __________ ,act as initial materials for soil formation?
- From the point of view of crop production, Soil testing refers to__________?
- The diagnostic techniques used in evaluating soil nutrient status and determining fertilizer requirements of the crop include:
- The major soil fertility problems in Pakistani soils deficiencies of N, P and Zn. Deficiencies K, Fe, and B also occur in specific crop genotypes or soil types, while deficiencies of S, Cu, and Mn are negligible. however, the common nutrient deficiencies are__________: and some micronutrients including Mo?
- According to a latest research, Pakistan is predominantly a dryland country; 80% of its land area is arid and semi arid, 12% sub-humid and 8% under humid climate. Thus , soils of arid & semi-arid regions are vulnerable to a wide range of degradation process. As the case in arid and semi-arid climates elsewhere in south-central/southern Asia and Sub-Saharan Africa; __________ are among the major causes of soil degradation and desertification?
- The kind, rate and intensity and pedogenic processes are controlled by ________ ,soil-forming factors?
- Pedogenic processes bring about changes in the parent materials in the form of __________, within the soil body (soil profile)?
- Although some acid soils do exist in the northern mountainous regions of Pakistan (Mansehra, Sawat, Dir). Almost all cultivated soils of the country are __________, with high base saturation and low organic matter content (generally less than 1%)?
- The horizons O, A, E and B (other than r and C) are collectively called__________?
- Some times, AB/EB/BA/BE horizons in soil profile are present which are called__________?
- Accumulation of Al and Fe oxides and clays coming from the upper profile layers:
- A group of soils with same parent material but located at different positions of slope?
- Peat soils are not present in Pakistan because these are formed in__________?
- In Pakistan, Indus plains are formed from __________ parent material which was transported by Indus river and its tributaries from Himalayas?
- Wind transported materials if it is silt dominated is__________?
- Weathering is the natural process of__________?
- Combination of soil genesis and classification is collectively called_________?
- Soils that have more than 20% organic matter are termed as:__________?
- Organic matter influences:_________?
- The mineral component of soil consists of_________?
- Which of the following statement is wrong regarding, Soil __________?
- Soil is a mixture of__________?
- __________ of alluvium (stratified sediment) by earth-worms is the most important soil-forming process in the alluvial plain of Pakistan:
- The immobilization and accumulation of the eluviated constituents at some depth beneath the soil surface:________?
- Phosphorus deficiency is widespread in most (_____%) 0f the soils of Pakistan.
- The basic form of present day Universal soil loss equation (USLE), initially involved the use of factors such as ________?
- Phosphorus (P) is the second major nutrient essential for plant growth. With the exception of Nitrogen (N) and Potassium (K), Phosphorus is required by plants in_________?
- The movement of water through a column of soil is called:__________?
- The deficient macronutrient in the sodic soils is:_______?
- According to one estimate, wind and water erosion over ______ % of the Pakistan’s total area?
- About 40% of the total area of Pakistan is affected by wind erosion. this includes:_________?
- Examples of prismatic structures are found in the __________ mapped in KPK and the northern part of Punjab.
- Soil particles as individuals such as sand and do not form aggregates. These are usually found in parent material or C horizon is:_________?
- AAS stands for:__________?
- Most common rocks, after exposed to weathering which cover about ______% 0f the earth:
- Granite and Basalt are examples of:__________?
- following are types of weathering:
- Soils that have more than 20% organic matter are termed as organic soils. These are also called:________?
- Organic matter in Pakistani soils is generally:_________?
- What is the formula of urea?
- Potassium (K) fixation capacity is maximum in:__________?
- What is the pH of calcareous soils?
- Which is/are dominating salt/s in alkali soil:
- What are diatoms?
- Which of the following crop takes N in ammonical form:
- The virus infecting bacteria is called:_________?
- Fe is trivalent in which of the chemical compound:
- If the chlorophyll content in plant increases, the solar radiation transmitted:
- Water occupied the larger soil pores and moves down readily under the force of gravity. Water in excess of the field capacity is termed: