Zn^{+2} is an inorganic activator for enzymes: / Zn^{+2} किस एंजाइम के लिए एक अकार्बनिक सक्रियक है?

(1) Carbonic anhydrase / कार्बोनिक एनहाइड्रेज Explanation (English): Metalloenzymes and zinc activation: (A) Divalent zinc (Zn²⁺) is the essential prosthetic metallic cofactor coordinate-bonded at the catalytic active site of Carbonic anhydrase. (B) Carbonic anhydrase catalyzes the rapid interconversion of carbon dioxide and water to bicarbonate and protons (CO₂ + H₂O HCO₃⁻ + H⁺). (C) Zinc also activates alcohol dehydrogenase and carboxypeptidase. व्याख्या (हिंदी): मेटालोएंजाइम एवं जिंक सक्रियता: (A) जिंक आयन (Zn²⁺) कार्बोनिक एनहाइड्रेज एंजाइम के सक्रिय स्थल पर आवश्यक धातु घटक के रूप में उपस्थित रहता है। (B) यह एंजाइम कार्बन डाइऑक्साइड और जल के बाईकार्बोनेट में द्रुत रूपांतरण को उत्प्रेरित करता है।

Zn^{+2} is an inorganic activator for enzymes:

All Subjects General Agriculture, Biology, Plant Protection & Statistics Principles of Agronomy, Crop Ecology, Geography & Agricultural Meteorology Field Crops Agronomy Weed Management Water Management Soil Fertility and Fertilizer Use Dryland Agronomy Problem Soils Sustainable Land Use Systems

Q.16

ICAR AIEEA PG Agronomy 14 July 2023 (Shift 1) Paper

Match the Following +4 −1

Match List I with List II

Choose the correct answer from the options given below:

सूची I को सूची II के साथ सुमेलित करें:

नीचे दिए गए विकल्पों में से सही उत्तर चुनें:

List - I सूची - I Organelle / Structure संरचना / घटक		List - II सूची - II Associated feature संबंधित विशेषता
A	Centriole तारककेंद्र	I	Thylakoids थायलाकोइड्स
B	Chlorophyll क्लोरोफिल	II	Infoldings in mitochondria माइटोकॉन्ड्रिया के आंतरिक वलन
C	Cristae क्रिस्टी	III	Nucleic acids न्यूक्लिक अम्ल
D	Ribozymes राइबोजाइम	IV	Basal body cilia or flagella सिलिया या फ्लैगेला का आधारीय पिंड

(A)-(IV), (B)-(I), (C)-(II), (D)-(III) (A)-(IV), (B)-(I), (C)-(II), (D)-(III) (A)-(III), (B)-(I), (C)-(II), (D)-(IV) (A)-(III), (B)-(I), (C)-(II), (D)-(IV) (A)-(IV), (B)-(II), (C)-(I), (D)-(III) (A)-(IV), (B)-(II), (C)-(I), (D)-(III) (A)-(IV), (B)-(I), (C)-(III), (D)-(II) (A)-(IV), (B)-(I), (C)-(III), (D)-(II)

Q.17

ICAR AIEEA PG Agronomy 14 July 2023 (Shift 1) Paper

MCQ (Single Correct) +4 −1

Rotenone is a:

रोटेनोन क्या है?

Insect hormone कीट हार्मोन Natural insecticide प्राकृतिक कीटनाशक Bioherbicide जैव-शाकनाशी Natural herbicide प्राकृतिक शाकनाशी

Q.18

ICAR AIEEA PG Agronomy 14 July 2023 (Shift 1) Paper

MCQ (Single Correct) +4 −1

An enzyme that joins the ends of two strands of nucleic acid is:

न्यूक्लिक अम्ल के दो रज्जुकों के सिरों को जोड़ने वाला एंजाइम कौन-सा है?

Polymerase पॉलीमरेज़ Ligase लाइगेज़ Synthetase सिंथेटेज़ Helicase हेलीकेज़

Q.19

ICAR AIEEA PG Agronomy 14 July 2023 (Shift 1) Paper

MCQ (Single Correct) +4 −1

$\text{Zn}^{+2}$ is an inorganic activator for enzymes:

$\text{Zn}^{+2}$ किस एंजाइम के लिए एक अकार्बनिक सक्रियक है?

Carbonic anhydrase कार्बोनिक एनहाइड्रेज Phosphatase फॉस्फेटेज Chymotrypsin काइमोट्रिप्सिन Maltase माल्टेज

Q.20

ICAR AIEEA PG Agronomy 14 July 2023 (Shift 1) Paper

MCQ (Single Correct) +4 −1

Which of the following vitamins serves as a hormone precursor?

निम्नलिखित में से कौन-सा विटामिन हार्मोन पूर्ववर्ती के रूप में कार्य करता है?

Vitamin A विटामिन A Vitamin C विटामिन C Vitamin D विटामिन D Vitamin K विटामिन K

General Agriculture, Biology, Plant Protection & Statistics 15
Principles of Agronomy, Crop Ecology, Geography & Agricultural Meteorology 22
Field Crops Agronomy 11
Weed Management 14
Water Management 21
Soil Fertility and Fertilizer Use 28
Dryland Agronomy 2
Problem Soils 4
Sustainable Land Use Systems 3

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Principles of Agronomy, Crop Ecology, Geography & Agricultural Meteorology

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Atmospheric Humidity, Precipitation, Monsoon Dynamics, Weather Forecasting and Agro-Climatic Zones Principles of Agronomy: Definition, Scope, History, Tillage, Tilth and Seedbed Preparation Agricultural Meteorology: Solar Radiation, Photosynthetically Active Radiation (PAR) and Albedo Climate Change, Greenhouse Gases, Global Warming and Impact on Crop Phenology Cropping Systems: Monocropping, Intercropping, Mixed, Sequential, Relay and Competition Indices (LER, ATER) Crop Growth Analysis, Growth Indices (LAI, CGR, RGR, NAR, LAR, SLA) and Yield Attributes Temperature, Growing Degree Days (GDD), Photoperiodism, Thermoperiodism and Heat Units Planting Geometry, Plant Density, Sowing Methods and Crop Stand Establishment

Field Crops Agronomy

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Weed Management

9 Topics

Weed Biology, Classification, Propagation, Dormancy, Dissemination and Crop-Weed Competition Chemical Control: Classification of Herbicides (Selectivity, Application Timing, Chemical Families) Herbicide Formulations, Surfactants, Adjuvants, Safeners and Application Equipment Critical Period of Crop-Weed Competition (CPWC) and Allelopathy in Agro-Ecosystems Herbicide Persistence, Soil Residual Fate, Leaching, Volatilization, Photodecomposition and Selectivity Mechanisms Integrated Weed Management (IWM): Cultural, Physical, Mechanical, Biological (Bioherbicides) and Chemical Controls Herbicide Resistance in Weeds, Cross & Multiple Resistance Mechanisms and Herbicide Tolerant Crops Parasitic Weeds (Striga, Orobanche, Cuscuta, Loranthus) and Aquatic/Invasive Weeds (Eichhornia, Parthenium) Herbicide Mode of Action: ALS, ACCase, Photosystem I & II, EPSPS, Synthetic Auxins, Glutamine Synthetase

Water Management

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Soil-Plant-Water Relations: Soil Moisture Constants, Soil Water Potential, Moisture Retention Curves and Hysteresis Crop Water Requirements, Water Use Efficiency (WUE), Consumptive Use and Irrigation Water Quality (SAR, RSC) Irrigation Methods: Surface (Check Basin, Furrow, Border), Pressurized (Drip, Sprinkler) and Fertigation Irrigation Scheduling Criteria: Soil Moisture Depletion, IW/CPE Ratio, Critical Growth Stages and Tensiometers Agricultural Drainage: Surface and Sub-surface Drainage Systems, Waterlogging Remediation and Salt Leaching

Soil Fertility and Fertilizer Use

7 Topics

Nutrient Dynamics in Soils: Nitrogen Transformation, Mineralization, Immobilization, Nitrification, Denitrification Secondary and Micronutrients in Soils: Calcium, Magnesium, Sulfur, Zinc, Iron, Manganese, Copper, Boron Active Essential Plant Nutrients: Classification, Criteria of Essentiality, Roles and Deficiency/Toxicity Symptoms Straight, Complex, Mixed, Slow-Release and Specialty Fertilizers: Chemical Properties, Salt Index and Reactions Integrated Nutrient Management (INM), Site-Specific Nutrient Management (SSNM), Soil Testing and Biofertilizers Phosphorus and Potassium Dynamics: Fixation, Adsorption-Desorption, Quantity-Intensity (Q/I) Relationships Nitrification Inhibitors (N-Serve, DCD, Neem-Coated Urea) and Nitrogen Use Efficiency (NUE) Enhancement

Dryland Agronomy

3 Topics

Crop Adaptation to Drought, Anti-transpirants (Stomatal, Reflecting, Film-forming) and Mulching Techniques Rainwater Harvesting, In-situ Moisture Conservation, Contingency Crop Planning and Watershed Management Dryland vs Rainfed Farming: Characteristics, Classification, Moisture Stress and Drought Types

Problem Soils

2 Topics

Salt-Affected Soils: Saline, Sodic, Saline-Sodic Soils, Diagnostics (ECe, ESP, SAR, pH) and Chemical Reclamation Acid, Acid-Sulfate, Calcareous and Degraded Problem Soils: Liming, Amelioration and Crop Adaptation

Sustainable Land Use Systems

3 Topics

Agroforestry Systems, Farming Systems Research (FSR), Integrated Farming Systems (IFS) and Wasteland Management Conservation Agriculture: Principles, Minimum Tillage, Zero Tillage, Bed Planting and Crop Residue Retention Organic Farming, Natural Farming (ZBNF), Certification Standards and Organic Inputs Preparation

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Soil Fertility and Fertilizer Use

Dryland Agronomy

Problem Soils

Sustainable Land Use Systems

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