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51
Seed rate for transplanting of bajra is
Discuss
Answer & Solution
Answer: Option A
Solution:
Bajra is the edible seeds of pearl millet plants. It is a type of Kharif crop. It grows well in dry and warm climatic conditions and its drought tolerant crop requires low annual rainfall ranging between 40 cm to 60 cm.
Pearl millet nurseries are raised in well fertilized raised seed beds. Healthy seedlings of 15 - 20 days old are transplanted in the water soaked fields. The seed rate for transplanting Bajra is 1 kg.
52
Select the pair which is not correctly matched
Discuss
Answer & Solution
Answer: Option D
Solution:
Emmer wheat - Triticum Dicoccum
Macaroni - Triticum Durum
Mexican wheat - Triticum Aestivum
Indian dwarf wheat - Triticum Sphaerococcum
53
The emitter electrode of pH meter is
Discuss
Answer & Solution
Answer: Option C
Solution:
Calomel Electrode and Glass Electrode are emitter electrodes. These two types of electrodes are used for calibrating the ph meter and also used for the measurement of the pH of any substance.
An emitter electrode is an electrode on a transistor from which a flow of electrons or holes enters the region between the electrodes.
54
Projecting the current weather conditions into future is called
Discuss
Answer & Solution
Answer: Option B
Solution:
Prognosis means a forecast of the likely outcome of a situation. So, projecting the current weather conditions in the future is termed a prognosis or weather forecasting. It is done by the application of science and technology to predict the conditions of the atmosphere in any location at any time.
55
In tobacco, the correct chronological order of practices is
Discuss
Answer & Solution
Answer: Option A
Solution:
The cultivation of tobacco usually takes place annually. The correct chronological order of agricultural practices in tobacco cultivation is Topping then Desuckering followed by priming.
Topping is the process of removing of budding part of the plant to avoid the flowering and seeding process.
Desuckering is the process of removal of lateral branches or suckers or auxiliary buds.
Priming is the process of removing leaves from the plant as they mature.
56
Which one of the following is not a legume crop
Discuss
Answer & Solution
Answer: Option A
Solution:
Peas, Groundnuts and Beans are leguminous crops while wheat is a non-leguminous crop.
Leguminous crops are those crops that belong to the legume family and that have nodules in their roots that contain nitrogen fixing bacteria. The bacteria convert the atmospheric nitrogen into a soluble form of nitrates and ammonia form.
57
The quantity of SSP (16% P2O5) required for application to one acre of rice-field at a dose of 60 kg P2O5 ha-1 is
Discuss
Answer & Solution
Answer: Option C
Solution:
The analysis or grade of a fertilizer refers to the minimum amounts of nitrogen phosphorus in the SSP in the fertilizer.
$$\eqalign{ & {\text{The does of nutrient}} \cr & = \frac{{\left( {{\text{Quantity of fertilizer}} \times {\text{Nutrient content}}} \right)}}{{100}} \cr & {\text{The quantity of fertilizer required}} \cr & = \frac{{\left( {100 \times {\text{Dose of nutrient}}} \right)}}{{{\text{Nutrient contant}}}} \cr} $$
  $$ = $$ 150 kg of SSP is required for application to one acre of rice field.
58
The crop grown in Uttar Pradesh during all the three seasons is
Discuss
Answer & Solution
Answer: Option D
Solution:
Maize is the crop grown in Uttar Pradesh in all three seasons. The three main agricultural seasons are Kharif, rabi, and Zaid. Maize is the most versatile emerging crop and it can be grown in all three seasons pop corn, baby corn and corn cob.
59
Subsistence farming is characterised by
Discuss
Answer & Solution
Answer: Option D
Solution:
The traditional method to grow crops with low resources and inputs is termed subsistence farming. When farmers grow crops to meet their needs of themselves on small scale, not for commercial purposes.
Its main characteristics are the Distress scale, along with Lack of technology, non-profit based, absence of chemical fertilizer and pesticides, etc.
60
What is the major constituent of biomass of an organism?
Discuss
Answer & Solution
Answer: Option B
Solution:
Biomass is the weight or total quantity of living organisms including plants, animals and microorganisms in a given area or volume. Biochemically all these are cellulose, lignin, sugars, fats and proteins.
Chemically it is a mixture of methane, hydrogen, carbon dioxide and hydrogen sulphide. Methane is the major constituent (75%). So, the major constituent is carbon in biomass.