Q.113
ICAR AIEEA PG 2024 - Entomology and Nematology
Statement Based +4 −1

Given below are two statements

Statement (I) : Tukra disease in mulberry is caused by whitefly.
Statement (II) : Shellac is a resin secreted by female lac insect on host plant.

In light of the above statements, choose the most appropriate answer from the options given below:

नीचे दो कथन दिए गए हैं

कथन (I) : शहतूत में टुकरा रोग (Tukra disease) सफेद मक्खी द्वारा होता है।
कथन (II) : शेलैक (लाख/Shellac) पोषक पौधे पर मादा लाख कीट द्वारा स्रावित एक राल (resin) है।

उपर्युक्त कथनों के आलोक में निम्नलिखित विकल्पों में से सही उत्तर चुनें:

Statement (I) is incorrect but Statement (II) is correct (Option 4). Tukra disease of mulberry is caused by the feeding of the mealybug Maconellicoccus hirsutus (Green) (Hemiptera: Pseudococcidae), which causes leaf curling, crinkling, and malformation (not caused by whitefly). Commercial lac/shellac is a natural resinous secretion produced principally by the sedentary female lac insect, Kerria lacca (Kerr), encrusting host tree twigs.

कथन (I) गलत है लेकिन कथन (II) सही है (विकल्प 4)। शहतूत का 'टुकरा रोग' मिलीबग (Maconellicoccus hirsutus) के रस चूसने से होता है, सफेद मक्खी से नहीं। शेलैक या प्राकृतिक लाख मादा लाख कीट (Kerria lacca) द्वारा अपने शरीर की सुरक्षा हेतु स्रावित एक राल (Resin) है।

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Entomology and Nematology विषय एवं अध्याय

विषय एवं पाठ्यक्रम के अनुसार सभी अध्याय देखें

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35 टॉपिक्स
Beneficial Insects II - Sericulture and Lac Culture: Silkworm Rearing, Moriculture, Lac Insect Biology and Processing सक्रिय Biological Control: Predators, Parasitoids (Trichogramma, Bracon), Hyperparasitoids and Conservation Pests of Cereals, Millets and Pulses: Rice, Wheat, Maize, Sorghum, Gram, Pigeonpea Orders Apterygota and Exopterygota: Odonata, Orthoptera, Dictyoptera, Isoptera, Thysanoptera, Hemiptera Beneficial Insects I - Apiculture: Honeybee Species, Social Organization, Bee Pasture, Diseases and Beekeeping Nematode Management: Cultural, Chemical (Nematicides), Biological, Entomopathogenic Nematodes (EPN Steinernema, Heterorhabditis) Insect Reproductive System, Spermatogenesis, Oogenesis, Types of Reproduction and Metamorphosis Plant Nematology II: Taxonomy, Major Nematode Orders (Tylenchida, Dorylaimida), Biology and Life Cycles Pests of Horticultural Crops: Vegetables, Fruit Trees, Plantation Crops, Spices and Flowers Orders Endopterygota: Neuroptera, Coleoptera, Diptera, Lepidoptera, Hymenoptera Integrated Pest Management (IPM): Cultural, Physical, Mechanical, Regulatory (Plant Quarantine) Controls Medical, Veterinary, Household Pests and Non-Insect Pests (Mites, Rodents, Birds) Insect Thorax Morphology: Pterothorax, Legs and Types, Wings, Venation and Coupling Mechanisms Microbial Control: Bacillus thuringiensis, NPV, GV, Entomopathogenic Fungi (Beauveria, Metarhizium) Insect Ecology: Abiotic Factors (Temperature, Humidity, Light), Biotic Factors, Thermal Thresholds and Life Tables Pests of Oilseeds, Commercial Crops and Fiber Crops: Cotton, Sugarcane, Mustard, Groundnut, Soybean Major Plant Parasitic Nematodes: Root-Knot (Meloidogyne), Cyst (Heterodera, Globodera), Reniform, Lesion, Ear-Cockle Insect Taxonomy: Principles of Zoological Nomenclature (ICZN), Hierarchy and Diagnostic Keys Host Plant Resistance (HPR): Non-preference (Antixenosis), Antibiosis, Tolerance and Mechanisms Insect External Morphology: Head, Suture, Tentorium, Eyes, Antennae and Types Insect Mouthparts: Biting-Chewing, Piercing-Sucking, Sponging, Siphoning, Chewing-Lapping Insect Integument: Cuticle Layers, Sclerotization, Chitin Chemistry and Molting Physiology Insecticide Mode of Action: AChE Inhibitors, Voltage-Gated Sodium Channels, GABA, Nicotinic Receptors, RyR Insecticide Formulations, Toxicity (LD50, LC50), Bioassay, Residues, Safety and Insecticides Act 1968 Stored Grain Pests: Primary, Secondary Beetles and Moths, Storage Structures and Fumigation Management Plant Nematology I: History, Morphology, Anatomy, Digestive, Excretory and Reproductive Systems of Nematodes History of Entomology in India, Landmarks, Pioneers and Entomological Institutions Insect Excretory and Nervous Systems: Malpighian Tubules, Cryptonephridia, Brain, Nerve Cord and Sense Organs Population Dynamics, Pest Surveillance, Forecasting, Sampling Methods and ETL/EIL Economics Semio-Chemicals: Pheromones (Sex, Aggregation, Alarm), Kairomones, Allomones, Traps and Mating Disruption Insect Abdomen Morphology, Segments, Male and Female Genitalia, Ovipositor Types and Appendages Insect Digestive System: Foregut, Midgut, Hindgut, Peritrophic Membrane, Filter Chamber and Nutrition Insect Circulatory and Respiratory Systems: Hemolymph, Dorsal Vessel, Spiracles and Tracheal System Insect Endocrine System, Neurohormones, Ecdysone, Juvenile Hormone and Diapause Physiology Chemical Control: Classification of Insecticides (OPs, OCs, Carbamates, Synthetic Pyrethroids, Neonicotinoids)
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