Description : The transfer of minerals from top soil to subsoil through soil-water is called? (1) Percolation (2) Conduction (3) Leaching (4) Transpiration
Last Answer : (3) Leaching Explanation: Leaching refers to the loss of water-soluble plant nutrients from the soil, due to rain and irrigation. As water from rain, flooding, or other sources seeps ... the underground water supply. Mineral nutrients lost from the soil system become unavailable for plant uptake.
Last Answer : (3) Leaching Explanation: Leaching refers to the loss of water-soluble plant nutrients from the soil, due to rain and irrigation.
Description : Soil which is prone to intensive leaching due to rain is called (1) Laterite (2) Black (3) Alluvial (4) Red
Last Answer : Laterite
Description : Soil formed by leaching and oxidation is (1) Black soil (2) Laterite soil (3) Red soil (4) Montane soil
Last Answer : Laterite soil
Description : Laterite soil develops as a result of : (1) deposits of alluvial (2) deposits of loess (3) leaching (4) continued vegetation cover
Last Answer : leaching
Description : Recharging of water table depends on (1) amount of rainfall (2) relief of the area (3) vegetation of the area (4) amount of percolation
Last Answer : relief of the area
Description : Solar energy is received by the earth through (1) conduction (2) radiation (3) convection (4) refraction
Last Answer : radiation
Description : Tea percolation employs (A) Liquid-liquid extraction (B) Leaching (C) Absorption (D) None of these
Last Answer : (B) Leaching
Description : Leaching of coarse solid lumps is also termed as (A) Decoction (B) Dissolution (C) Percolation (D) Agitation and settling
Last Answer : (C) Percolation
Description : Atmospheric temperature increasing at the higher altitudes is called (1) Radiation (2) Inversion (3) Conduction (4) Convection
Last Answer : Inversion
Description : Piping in a soil mass is a) Erosion of subsoil by the high velocities of flow of water through it when such velocities exceed a certain limit* b) Caused due to very low exit gradient c) ... connected pores d) Due to loss of the strength of cohesion less soil because of upward flow of of water
Last Answer : a) Erosion of subsoil by the high velocities of flow of water through it when such velocities exceed a certain limit*
Description : Land and sea-breezes occur due to : (1) Conduction (2) Convection (3) Radiation (4) Tides
Last Answer : Convection
Description : Trade winds are due to (1) Conduction (2) Convection (3) Radiation (4) Scattering
Description : Which of the following minerals are required for smelting iron ore? (1) Limestone and gypsum (2) Manganese and limestone (3) Limestone and coal (4) Gypsum and coal
Last Answer : Manganese and limestone
Description : Subsoil plough is useful for — a. for deep ploughing b. to break hard pan of soil c. Shallow ploughin
Last Answer : b. to break hard pan of soil
Description : Which of the following processes are associated with plants during dark period? (1) Photosynthesis and respiration (2) Respiration and transpiration (3) Transpiration and conduction (4) Conduction and respiration
Last Answer : (4) Conduction and respiration Explanation: Conduction is the process by which vital nutrients are transported to the different parts of a plant. This process is independent of the light factor ... the photosynthesis process cannot be happening without sun, so it exhales the carbon-dioxide itself.
Last Answer : Conduction and respiration
Description : Veins seen in the leaves, serve the function of (1) Photosynthesis (2) Transpiration (3) Storage (4) Conduction
Last Answer : Conduction
Description : Which one of the following processes during decomposition is correctly described? (a) Catabolism - Last step in the decomposition under fully anaerobic condition (b) Leaching - Water soluble inorganic ... of a dark coloured substance humus which undergoes microbial action at a very fast rate.
Last Answer : (c) Fragmentation – Carried out by organisms such as earthworm
Description : The high density of soil placed in a fill is desired in order to a) Increase its shear resistance* b) Reduce its shear resistance c) Promote future settlements d) Decrease percolation through the fill.
Last Answer : a) Increase its shear resistance*
Description : The food chain refers to the transfer of energy from : (1) the interior of the earth to the surface (2) lower to higher latitudes (3) one organism to another (4) organisms of the land to those of the sea by means of river
Last Answer : one organism to another
Description : The temperature of water at the bottom of a large waterfall is higher than that of the water at the top. because (1) the falling water absorbs heat from the Sun. (2) the water at the bottom has greater ... of the falling water is converted into heat. (4) rocks on the bed of the river give out heat.
Last Answer : the kinetic energy of the falling water is converted into heat.
Description : The word Biosphere refers to : (1) Zone of soil, water and air around earth capable of supporting the flora and fauna. (2) Part of earth surface which can support the flora (3) Parts of air around earth a where life can exist (4) Zone of water on earth which can support life.
Last Answer : Zone of soil, water and air around earth capable of supporting the flora and fauna.
Description : The distribution of characteristic vegetation of a region is determined mainly by (1) soil, water and temperature (2) water, greenhouse effect and altitude (3) wind, water and latitude (4) sunlight, water and wind
Last Answer : soil, water and temperature
Description : The sphere of living matter together with water, air and soil on the surface of the earth is known as (1) Lithosphere (2) Biosphere (3) Hydrosphere (4) Atmosphere
Last Answer : Biosphere
Description : The soil water which is of the greatest importance to the plant life is (1) Gravitational water (2) Capillary water (3) Hygroscopic water (4) Combined water
Last Answer : Capillary water
Description : The main advantage of Rain? Water Harvesting (RWH) is (1) Recharge ground water (2) Avoid floods (3) Reduce the loss of water (4) Avoid soil erosion
Last Answer : Recharge ground water
Description : Plantation of trees on a large scale to check soil erosion are called: (1) Shelter belts (2) Contour ploughing (3) Strip cropping (4) Afforestation
Last Answer : Afforestation
Description : The soil which originate under tall-grass prairie vegetation is called (1) Black soils (2) Chestnut soils (3) Chernozem soils (4) Terra rosa soils
Last Answer : Chernozem soils
Description : Biosphere refers to (1) the area of the land inhabited by living organism (2) the part of ocean inhabited by plants and animals (3) the portion of the earth, including the oceans, the land, the soil and the atmosphere inhabited by living organisms (4) the atmosphere surrounding the living organisms
Last Answer : the portion of the earth, including the oceans, the land, the soil and the atmosphere inhabited by living organisms
Description : Which of the following is a Biological method of soil conservations ? (1) Contour farming (2) Contour terracing (3) Gully control (4) Basin listing
Last Answer : Contour farming
Description : Name the condition which influences the development of plants into distinctive forms. (1) Climatic conditions (2) Soil conditions (3) Environmental conditions (4) Social conditions
Last Answer : Climatic conditions
Description : A natural region has the similarity of (1) climate and natural vegetation (2) climate and occupation (3) soil and drainage (4) economic base and reces
Last Answer : climate and natural vegetation
Description : Which one of the following is the indirect use of forests ? (1) Medicinal plants (2) Checking soil erosion (3) Building material (4) Grazing
Last Answer : Checking soil erosion
Description : Salination of soil is caused by (1) pesticides (2) soil erosion (3) excess irrigation (4) crop rotation
Last Answer : excess irrigation
Description : Black soil is also known by which of the following name ? (1) Khadar Soil (2) Bangar Soil (3) Alluivial Soil (4) Regur soil
Last Answer : Regur soil
Description : Alluvial soils are rich soil for crop cultivation but are poor in (1) humus (2) nitrogen and humus (3) organic material (4) inorganic material
Last Answer : nitrogen and humus
Description : The remedies to soil erosion are : I. Contour bunding II. Regulation of land use III. Cutting of trees IV. Allowing grazing of animals (1) I, III (2) I, II (3) III, IV (4) II, III
Last Answer : I, II
Description : Soil erosion can be prevented by (1) Increasing bird population (2) Afforestation (3) Removal of vegetation (4) Overgrazing
Description : In a desert region, soil erosion can be checked by (1) Contour ploughing (2) Using farm manure (3) Tree plantation/Afforestaion (4) Crop rotation
Last Answer : Tree plantation/Afforestaion
Description : Which one of the following pairs is not correctly matched ? (1) Khadar – Zonal soil (2) Podzol – Zonal soil (3) Chestnut – Zonal soil (4) Bhangar – Azonal soil
Last Answer : Khadar – Zonal soil
Description : Identify the most infertile amongst the following soils. (1) Black cotton soil (2) Alluvial soil (3) Laterite soil (4) Peaty soil
Description : Soil factors are otherwise known as : (1) Edaphic factors (2) Biotic factors (3) Physiographic factors (4) Climatic factors
Last Answer : Edaphic factors
Description : The organic matter present in soil is known collectively as (1) Hydrocarbons (2)Podsols (3) Humus (4)Colloids
Last Answer : Humus
Description : In a desert region, soil erosion can be checked by (1) Tree plantation/afforestation (2) Crop rotation (3) Contour ploughing (4) Using farm manure
Last Answer : Tree plantation/afforestation
Description : The significant quantity of upper soil is formed by (1) Igneous rock (2) Sedimentary rock (3) Metamorphic rock (4) Biological degradation
Last Answer : Sedimentary rock
Description : Humus is a type of (1) fossil seen on the rocks (2) decaying organic matters in soil (3) fertilizers applied in soil (4) special growth found in plants
Last Answer : decaying organic matters in soil
Description : Black soil is mainly related with the crop of (1) cotton (2) sugarcane (3) tea (4) coffee
Last Answer : cotton
Description : Contour ploughing helps in (1) stopping floods (2) growing crops (3) soil conservation (4) checking landslides (SSC Combined Matric Level (PRE)
Last Answer : soil conservation
Description : Which one of the following practices is adopted for restoring the fertility of soil ? (1) Weeding (2) Levelling (3) Fallowing (4) Harrowing
Last Answer : Fallowing