Description : The water, that moves downward freely under the influence of gravity (< 1/3 bar) beyond the root zone
Last Answer : Ans.Gravitational water
Description : Vertical movement of water or downward movement of water from different soil layer is called as
Last Answer : Ans.Percolation
Description : Commercial flower crops are sometimes watered to cause leaching. This means: a. Watering to spread fertilizer nutrients more evenly throughout the plant root system b. Watering to remove excess soluble salts from ... only to wet the top 1/3 of the growing medium d. Watering by subsurface methods
Last Answer : Watering to remove excess soluble salts from the growing medium
Description : Reclamation of saline soil which of the following practice is followed ? — a. Adequate drainage b. By good quality irrigation water c. Leaching of salts below root zone d. All of these
Last Answer : d. All of these
Description : The process of osmosis is best illustrated by the movement of: a) salts in blood stream. b) oxygen into red blood cells. c) carbon dioxide through stomata. d) water into root hair cells.
Last Answer : ANSWER: D -- WATER INTO ROOT HAIR CELLS.
Description : Eutrophication is the process of enrichment of surface water bodies with — a. Minerals b. Nutrients c. Salts d. Vegetation
Last Answer : b. Nutrients
Description : Capillary movement of water is complemented by
Last Answer : Ans.Root extension
Description : The total root parasitic weed of Tobacco?
Last Answer : Ans.Orabanchi spp.
Description : Semi root parasitic weed of Sorghum and Sugarcane?
Last Answer : Ans.Striga spp.
Description : The permanent type root of sugarcane is
Last Answer : Ans.Shoot roots
Description : The type of root system in chickpea is
Last Answer : Ans.Tape root system
Description : The nitrogen fixing bacterium found on root surface of rice
Last Answer : Ans.Azospirillum
Description : What are the types of soil movement in the process of wind erosion?
Last Answer : Ans.Saltation, Suspension and Surface creep
Description : Downward entry and movement of water in soil surface is — a. Percolation b. Infiltration c. Permeability d. None of these
Last Answer : b. Infiltration
Description : Negative skin friction (A) Is a downward drag acting on a pile due to downward movement of the surrounding compressible soil relative to the pile (B) Develops due to lowering of ground water (C) Both (a) and (b) (D) Neither (a) not (b)
Last Answer : Answer: Option C
Description : how does the root system of lavender trees grow do they spread out or grow downward?
Last Answer : I would be very careful where you plant this tree.....it grows 40 ft high, so roots can go down and out to support it....keep it away from your house. Needs to be planted early spring so roots get established. trim in fall only 1/3. does not like wet area.
Description : Downward movement of food synthesized in leaves takes place through
Last Answer : Ans. Phloem
Description : What is the direction of movement of sugars in phloem? (a) Bi-directional (b) Non-multidirectional (c) Upward (d) Downward
Last Answer : (a) Bi-directional
Description : Economic growth is best depicted by (a) Outward shift in PPF ; (b) Upward movement in PPF ; (c) Inward movement in PPF (d) Downward movement in PPF
Last Answer : (a) Outward shift in PPF ;
Description : The loss of water (contains salts and minerals) through hydathodes in liquid form during night and regulated by root pressure
Last Answer : Ans. Guttation
Description : Root suckers are a) Insects that suck nutrients from the roots of plants b) Shoots that arise from roots to form new plant c)New plant parts that arise from the branches of fruit trees d) Roots of neighboring plants that share water with the another plant
Last Answer : b) Shoots that arise from roots to form new plant
Description : The movement of nutrient ions and salts along with moving water
Last Answer : Ans. Mass flow
Description : The movement of water, from one cell of cortex to adjacent one in roots, is due to (a) accumulation of inorganic salts in the cells (b) accumulation of organic compounds in the cells (c) water potential gradient (d) chemical potential gradient.
Last Answer : (c) water potential gradient
Description : Development of shoot and root is determined by: (a) Cytokinin and auxin ratio (b) Enzymes (c) Temperature (d) Plant nutrients
Last Answer : Ans. ((a))
Description : Antacid combinations of magnesium and aluminium salts are superior to single component preparations because: A. They have rapid as well as sustained acid neutralizing action B. They are less likely to affect gastric emptying C. They are less likely to alter bowel movement D. All of the above
Last Answer : D. All of the above
Description : Circulation is the movement of substances like nutrients and gases within blood vessels and cavities throughout the organism.
Last Answer : Do all animals have a circulatory system?
Description : In crop movement programme, haploids are important because they (a) require one half of nutrients (b) are helpful in study of meiosis (c) grow better under adverse conditions (d) form perfect homozygous.
Last Answer : (d) form perfect homozygous.
Description : Detachment and transportation of top soil particles by wind and or by water is known as.
Last Answer : Ans.Soil erosion
Description : What is the concentration of solution in ppm if 2 kg of 2,4-D is mixed with 1000 lit of water?
Last Answer : Ans.2000
Description : The chemicals used to check transpiration losses of water
Last Answer : Ans.Antitranspirents
Description : Which is accumulated in the leaves of water stressed plants
Last Answer : Ans.ABA
Description : The moisture deficit condition, results when the amount of water vapour available in the soil is not sufficient to meet the demand of potential evapo-transpiration
Last Answer : Ans.Drought
Description : Water harvesting in situ is known as
Last Answer : Ans.Runoff farming (VII) Dryland Agriculture
Description : Salt content in irrigation water evaluated as best quality
Last Answer : Ans.0.2 to 0.5 g/lt
Description : The ratio of the crop yield to the total amount of water used for irrigation is called, measured in kg/ha-cm is
Last Answer : Ans.Water use efficiency
Description : What will be CPE value when irrigation is scheduled at 0.8 IW/CPE with 6.0 cm depth of irrigation water?
Last Answer : Ans.7.5 cm or 75 mm
Description : The period when water requirement is maximum is called as
Last Answer : Ans.Critical stages of water requirement
Description : Water requirement of maize and groundnut are
Last Answer : Ans.50-80 cm
Description : Water requirement of cotton crop
Last Answer : Ans.70-130 cm
Description : Water requirement of sugarcane
Last Answer : Ans.150-250 cm
Description : Water requirement of wheat, sorghum, soybean and tobbaco are
Last Answer : Ans.45-65 cm
Description : Water requirement of rice is
Last Answer : Ans.90-250 cm
Description : The consumptive use of water is equal to
Last Answer : Ans.ET + Mw
Description : The quantity of water needed for normal crop growth and yield in a period of time to a place and may be supplied by precipitation or by irrigation or by both.
Last Answer : Ans.Water requirement of a crop
Description : The process in which soil water lost from leaves of plants in the form of vapour and enters the surrounding atmosphere.
Last Answer : Ans.Transpiration
Description : A diffusive process by which liquid water in the form of vapour is lost in the atmosphere
Last Answer : Ans.Evaporation
Description : When water is held tightly as thin film around soil particles by adsorption forces and flows at gravity of > -31 bar, is called
Last Answer : Ans.Hygroscopic water
Description : The water, retained by the soil in capillary pores (micropores), against gravity (-1/3 to - 31 bar) by the force of surface tension
Last Answer : Ans.Capillary water
Description : The amount of soil moisture or water content held in soil after excess water has drained away is called
Last Answer : Ans.Field capacity (FC)
Description : The water content between Field capacity (-1/3 bar) to PWP (-15 bar) is called
Last Answer : Ans.Available water