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Sericulture, also called silk farming, is the process of making silk fibers. Poisoned larvae develop asynchronously, molt late, or have supernumerary instars, often two or three extra instars. question_answer Answers(3) edit Answer . in Sericulture or B. Sc. Copyright © 2020 | WordPress Theme by MH Themes, Benedict’s Test: Principle, Requirements, Procedure and Result Interpretation, Capsule staining: Principle, Requirements, Procedure and Microscopic Examination, Acid-fast staining or Ziehl-Neelsen staining : Principle, Requirements, Procedure and Microscopic Examination, Ligand and its types in a Co-ordination or Complex compound, Gram staining: Principle, Requirements, Procedure and Microscopic Examination, Electric bell (Construction and working mechanism), Cranial nerves (Types, Origin, Distribution and Function). For example, in a fish-duck farming system many complementarities are observed between the duck enterprise and the pond ecosystem (Kumar et al., 2012). A farming system in much of the developed world has become an issue of managing a set of individual enterprises. Do you need further more questions paper of other years? Here is your notes on sericulture! Although there are several commercial species of silkworms, Bombyx mori (the caterpillar of the domestic silkmoth) is the most widely used and intensively studied silkworm. Horticulture is the art and science of cultivation of fruits, vegetables, flowers, medicinal and aromatic plants,landscaping, gardening etc. Owing to the wide variety of pesticides used and their timing and dosage, the effect on silkworms varies greatly (Zhang, 2010). Although there are several commercial species of silkworms, Bombyx mori (the caterpillar of the domestic silkmoth) is the most widely used and intensively studied silkworm. Along with Drosophila melanogaster, B. mori larvae have been used as a model for various biological studies for many years. Although there are several commercial species of silkworms, Bombyx mori is the most widely used and intensively studied silkworm. Share with your friends. edurite com … The Indian Council of Agricultural Research under the Ministry of Agriculture focuses special attention on lac culture and apiculture for research on improved strains, improved culture techniques, and improved product processing from these two groups of insects. Sericulture is an industry that is characterized by a two-step process, the cultivation of mulberry trees and the rearing of silkworms on mulberry leaves to produce cocoons. The duration of … Science Secondary School +5 pts Answered What is sericulture? class 7 project on sericulture class viii cbse nic in. The scientific process of rearing the larvae of silkworm for production of the cocoon and the extraction of good quality of fibres from these cocoons is known as sericulture. After each molting, the larva neither feeds nor moves for the next 20-24 hours. thumb_up Like (1) visibility Views (6.3K) edit Answer . The management of the farm as a system has been relegated to resource acquisition and an allocation problem between (almost) independent enterprises (Dent, 1990). Pupa is completely inactive. Kaplan, in Encyclopedia of Materials: Science and Technology, 2001. After attempting 3 or 4 tests out of these 20 tests, you will feel confident about this chapter. Lesions form on intersegmental membranes, causing them to swell and look like bamboo segments. This finding was the first demonstration of vertical transmission of a pathogen (Pasteur, 1870). Other types of silkworms (such as Eri, Muga, and Tasar) are also cultivated for the production of … sericulture: [noun] the production of raw silk by raising silkworms. In silkworm’s life cycle, there are 5 instars of larva. Fibre to Fabric. The thorax bears three pairs of legs and two pairs of wings. TSC Secondary level Science Question Paper -2074. Amongst the biological processes investigated in B. mori, the study of the differentiation of the silk gland, the organ that synthesizes, secretes, and organizes the silk proteins into a thread, has attracted constant attention. Silk is the protein secreted by the larvae of certain Lepidopteran moths. Marks may vary from one College or University to the other. For example, fluorides may occur as an industrial waste gas (from aluminum smelting or phosphate processing plants) that can contaminate mulberry leaves. The weight of this organ accounts for about 25% of the weight of larvae in the late fifth instar. Adults survive for 5-7 days during which they mate, produce eggs and continue the generation. Strains of B. mori have been bred specifically for mass-rearing under sterile conditions using artificial diet, and can be used to harvest expressed proteins directly from the hemolymph before the virus kills the host. Agriculture is the process of producing food, feed, fiber and many other desired products by the cultivation of certain plants and the raising of domesticated animals (livestock). Eggs exposed to the stove gases do not hatch or only a portion of them hatches, whereas larvae have a reduced feeding rate, become sluggish, or lie still on rearing trays. Sexes are separate. 0 votes. in Silk Technology (Sericulture). Sericulture:An Introduction The rearing of silkworms for the production of raw silk is known as sericulture.
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