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Element responsible pollen grain of plant__________?
Related MCQs
Specific heat of organic matter is______?
What is a soil horizon?
Accumulation of soluble salts in soil________?
The largest soil order in Pakistan?
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Which type of soil is found near the canal banks:
A and B horizon is called as_________?
Who consider the various properties of soil in relation to plant production?
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Available water is held between?
Which of the following is not a metamorphic rock?
Which nutrients are immobile in plants?
Which element is found highest in earth crust?
Specific heat is higher in:
BGA was discovered as a nitrogen fixer in paddy field by ?
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Which element is known as chemical police man of plant?
Which of the following nutrient elements are regarded as energy exchangers:
A mineral horizon that is either too thin, too light in colour, too low in organic matter:
Soil Organic Matter (SOM) which consists of about _______ % organic carbon plays a vital role by providing macro & micro nutrients:
Each layer of phyllosilicates is composed of two types of sheets:
The internal & external surfaces of soil colloids are positively and or negatively charged. Mostly __________ is dominant:
Which of the following is not the soil order prevail in Pakistan?
Which of the following is wrong?
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Conservation agriculture improves the water use efficiency of dryland systems. It has components:
The planned development, distribution and use water resources:
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Depending on the percentage of sand, silt, clay, soils are divided into _______ textural classes:
__________ particles range in diameter between 0.02 to 0.002 mm:
Systematic examination of soil in the field and laboratories, their description and grouping according to classification system:
swelling clay soils, develop cracks due to greater proportion of swelling type clays:
There are twelve soil orders found in the world of which six soil orders have been recognized at various locations are________?
_________is probably the most important growth limiting factor in acid soils especially those having pH below 5.0-5.5?
The removal of excess water from the ground surface is called:________?
What is the effect of application of P2O5 fertilizer to a green manure leguminous crop in the availability of phosphorus to the succeeding crop?
Ground water refers to the________?
The percentage of calcium content in single superphosphate?
The tension of the water at the upper plastic limit is equivalent to pF value:
Clay and humus particles are referred to as colloids and are less than 0.002mm. Due to their small size, colloids have __________ surface area which provides surface for adsorption, catalysis, precipitation and microbial colonization:
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_________ erosion is the removal of a thin layer of soil by water acting over the whole surface. This type of erosion damaged very fertile lands located on slopes, some of which have been eroded to a depth of about 15 cm.
In Pakistan there is general deficiency of rainfall. It varies from 125 mm annually in upper Sindh to about 900 mm in the sub-mountainous of northern Pakistan. In Balochistan the mean annual rainfall is about 200 mm, diminishing to ________ mm in the desert of Kharan:
Losses of soil water not includes_________?
The relative abundance of three types of rocks ( igneous-metamorphic- sedimentary) in the earth’s crust is_________?
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Element responsible pollen grain of plant__________?
A. N
B. P
C. K
D. B
Submitted by:
Hakeem Taj Shapuki
Correct Answer:
B
✔
Last Updated:
January 02, 2021