Category: Entomology Tables
Different types of parthenogenesis
By Agritests |
24 Jul, 2026
Leave a comment
Basis of Classification Parthenogenesis Type Key Features / Description Examples Based on Occurrence Facultative Optional; insects can reproduce either sexually or parthenogenetically. Honey bees (Apis spp.) Obligatory (Constant) Compulsory; reproduction occurs exclusively without fertilization. Stick insects (Phasmids), Parasitic wasps Cyclic (Sporadic) Alternation between sexual and parthenogenetic generations. Aphids, Gall wasps Based on Sex Produced Arrhenotoky […]
Number of Malpighian tubules in different insects
By Agritests |
24 Jul, 2026
Leave a comment
Insect Group / Example Number of Malpighian Tubules (MT) Taxonomic Order Aphids Absent (0) Hemiptera Scale Insects 2 Hemiptera Bugs (True Bugs) 4 Hemiptera Mosquitoes 5 Diptera Moths and Butterflies 6 Lepidoptera Cockroach 60 Blattodea Locusts > 200 Orthoptera
Different Types Of Insect Glands
By Agritests |
24 Jul, 2026
Leave a comment
Gland Type Function / Secretion Examples Wax Gland Secretes protective wax coating or material used for comb building. Honey bees, Mealybugs, Scale insects Lac Gland Secretes resinous substance (lac) that forms a protective encrustation. Lac insect (Kerria lacca) Androconia (Scent Scales) Specialized wing scales that produce and disseminate sex pheromones. Male Moths and Butterflies (Lepidoptera) […]
Cuticular Appendages
By Agritests |
24 Jul, 2026
Leave a comment
Cellular Origin Appendage Type Description / Characteristics Examples Multicellular Structure(Outgrowths of cuticular and epidermal layers) Spur (Movable) Multicellular outgrowth set in a socket; freely movable. Tibial spurs on hind legs of Grasshoppers, Crickets Spine (Immovable) Rigid, immovable, thorn-like multicellular outgrowth. Hind leg spines on Leafhoppers and Grasshoppers Unicellular Structure(Derived from a single epidermal cell / […]
Defense mechanisms in Insects
By Agritests |
24 Jul, 2026
Leave a comment
Defense Mechanism Key Features & Adaptation Examples Behavioral Mechanisms Thanatosis (death feigning)—insects pretend to be dead to avoid predator attacks. Weevils and various beetles Structural Mechanisms Hardened forewings (elytra) or spines that protect against bird and insect predators. Beetles (Coleoptera) Colorational Mechanisms Camouflage (crypsis) or protective coloring matching surroundings to escape detection. Stick insects, Leaf […]
Presence of special types of reproduction other than oviparity and viviparity
By Agritests |
24 Jul, 2026
Leave a comment
Reproduction Type Description / Process Examples Polyembryony Development of multiple embryos/individuals from a single fertilized egg. Parasitic Wasps (e.g., Copidosoma spp., Encyrtidae) Parthenogenesis Development of offspring from an unfertilized egg (without male contribution). Aphids, Stick Insects, Honeybees (male drones) Paedogenesis Reproduction by immature or larval/nymphal stages without reaching adulthood. Cecidomyiid flies (Gall midges), Micromalthus debilis
Seven Classes of arthropoda
By Agritests |
24 Jul, 2026
Leave a comment
Class Etymology / Meaning Examples Onychophora Claw-bearing Peripatus (Velvet worm) Crustacea Crusta = Shell Prawns, Crabs, Lobsters Arachnida Arachne = Spider Scorpion, Spider, Ticks, Mites Chilopoda Chilo = Lip; poda = Legs Centipedes Diplopoda Diplo = Two; poda = Legs Millipedes Trilobita Three-lobed body Trilobites (Extinct fossil group) Hexapoda (Insecta) Hexa = Six; poda = […]
Relationship of insects with other arthropods
By Agritests |
24 Jul, 2026
Leave a comment
Characters Onychophora Crustacea Arachnida Habitat Terrestrial Mostly aquatic, a few terrestrial Terrestrial Body Regions Not distinct Two parts: Cephalothorax & Abdomen Scorpion: Pro, Meso, and Metasoma Spider: Prosoma and Opisthosoma Antennae 1 pair 2 pairs Absent Visual Organs Not distinct 1 pair of stalked compound eyes Simple eyes (Ocelli) Locomotor Organs Many pairs of unjointed […]
Position of insects in animal kingdom
By Agritests |
24 Jul, 2026
Leave a comment
Taxonomic Rank Taxon / Name Kingdom Animalia Phylum Arthropoda Subphylum Uniramia (Hexapoda) Class Insecta (Hexapoda)
Historical Events
By Agritests |
24 Jul, 2026
Leave a comment
Historical Event / Milestone Year Posting of the first Entomologist to the Government of India (Lionel de Niceville) 1901 Publication of books “Indian Insect Pests” & “Indian Insect Life” by Prof. H. Maxwell-Lefroy 1906 Enactment of the Destructive Insects and Pests (DIP) Act 1914 Establishment of the Indian Central Cotton Committee (to investigate cotton pests) […]