PCA Insects, Mites and Other Invertebrates Questions with 100% Correct Answers

PCA Insects, Mites and Other Invertebrates Questions with 100% Correct Answers 6 parts of a spider - Answer cephalothorax, abdomen, legs, eyes, palps and chelicera. 7 main parts of an insect - Answer head,antenna, mouthparts, thorax, wings, legs and abdomen. Aphytis melinus - Answer California red scale( citrus. assassin bugs - Answer flies caterpillars. big eyed bugs - Answer mites aphids bollworms and whiteflies. Blood-feeding mouthparts of insects - Answer - Insects like mosquitoes (Diptera: Culicidae) - An elongate labium forms a protective sheath for 6, rather than 4, stylets - The mandible- and maxilla-formed stylets are accompanied by an additional pair, modified from the hypopharynx and labrum-epipharynx, which forms a food channel - The back of the food channel is closed by the hypopharynx with its salivary duct. This duct carries saliva with enzymes and anticoagulants that reduce blood clotting in the host and improve the flow of blood to the mosquito - In feeding the maxillary and mandibular stylets work together as a needle to penetrate the host's skin body parts of mites - Answer chelicerae (mouth parts), head thorax and abdomen. Chewing mouthparts of insects - Answer - Labrum: upper lip - Mandibles: pair of jaws for chewing - Maxillae: pair of second jaws - Labium: lower lip - Hypopharynx: tonguelike, drops from membranous floor of cranium, behind the mouth, and bears the opening of the salivary ducts - Labrum-epipharynx: the interior, fleshy surface of the labrum, endowed with numerous sensory structures Chewing-lapping mouthparts of insects - Answer - Used in eating liquid food in bees and wasps (Hymenoptera) - The mandibles and labrum are similar to the chewing type and are used in molding wax, manipulating nest materials, and grasping prey - The maxillae and labium form a channeled proboscis through which saliva is discharged and nectar is drawn up codling moth damage - Answer reddish brown crumbly droppings tunneled through apples pears etc. convergent ladybird beetle - Answer aphids and mites. describe the circulatory system in insects? - Answer the circulatory system in insects is open whereby they pump blood into a hemocoel after which blood will diffuse back into the circulatory system. difference between R and K strategists? - Answer R strategist produce many cheap offspring and live in unstable environments. K strategist produce few expensive offspring and live in stable environments. Direct injury versus indirect injury to crops? - Answer direct injury is caused by a multitude of arthropods by burrowing in Stems or leaves or feeding on fruit. indirect feeding is basically something that leads to the vectoring of a disease. ecological niche - Answer functional position of the organism in their environment. ecology - Answer Scientific study of interactions among organisms and between organisms and their environment ecotype - Answer a distinct form of a race of a plant or animal occupying a specific or particular habitat. encarsia Formosa - Answer Greenhouse whiteflies. exoskeleton function? - Answer it acts as protection and support. four stages of an insect - Answer egg, larva, pupa and adult. green lacewing - Answer aphids and other soft-bodied insects. how do you determine the sampling method from insect distribution? - Answer where they are found: i.e. in the soil,on leaves or twigs. how does ant control conserve natural enemies? - Answer Some ants are predatory in regards to natural enemies due to their symbiotic relationship with honeydew producing pests. how does the respiratory system work in insects? - Answer air enters the respiratory system of insects through a series of external openings called spiracles.