Beneficial insects – silkworm species, rearing, diseases, by-products, economic importance - One Line Questions

1. The economic importance of silkworm by-products like silk waste lies in their use for: — Manufacturing spun silk and other textiles
2. Which is the most commonly cultivated silkworm species globally for commercial silk production? — Bombyx mori
3. The rearing of silkworms is typically done indoors in controlled environments known as: — Sericulture houses
4. The process of raising silkworms for silk production is called: — Sericulture
5. Pebrine disease in silkworms is caused by a microscopic organism belonging to which group? — Protozoa
6. Grasserie is a viral disease that affects silkworms, leading to symptoms like: — Weakness and translucence of the body
7. Eri silk, known for its breathable and insulating properties, is produced by which silkworm species? — Samia cynthia ricini
8. Which silkworm species is primarily associated with the production of wild silk? — Antheraea species
9. What is the primary food source for the larvae of Bombyx mori? — Mulberry leaves
10. The process of spinning the cocoon by the silkworm larva involves the secretion of: — Fibroin and sericin
11. The casing spun by the silkworm larva around itself is known as a: — Cocoon
12. The primary by-product of sericulture after reeling silk is called: — Silk waste (e.g., floss, damaged cocoons)
13. The silk glands of the silkworm larva are homologous to the: — Salivary glands of insects
14. The transformation from larva to pupa involves a process called: — Pupation
15. Which stage of the silkworm life cycle produces the silk thread? — Pupa
16. Which of the following is NOT a stage in the life cycle of a typical silkworm? — Nymph
17. The immature stage of the silkworm, where it undergoes multiple molts, is the: — Larva
18. What is the term for the practice of raising silkworms on a commercial scale? — Sericulture
19. The adult stage of the silkworm is a moth that: — Mates and lays eggs, but does not feed
20. Which of the following is a major bacterial disease affecting silkworms? — Flacherie
21. Which disease is characterized by the silkworm's body becoming hard, dry, and mummified, often with a chalky appearance? — Muscardine
22. What is the term for the process of killing the pupa inside the cocoon to prevent emergence and damage to the silk filament? — Stifling
23. The economic value of silk is derived from its properties such as: — Strength, luster, and drape
24. Which of the following is a critical factor for successful silkworm rearing, affecting their health and development? — Optimal temperature and humidity control
25. The economic contribution of sericulture includes not only silk production but also: — Employment generation in rural areas
26. The economic importance of sericulture is amplified by its potential to: — Provide livelihood opportunities in rural and semi-urban areas
27. The process of selecting healthy eggs for hatching in sericulture is called: — Selection
28. Which country is the world's largest producer of silk? — China
29. The economic importance of wild silks like Tussah and Muga lies in their: — Unique texture and color
30. Tussah silk is a type of wild silk produced by larvae that feed on: — Oak and other host plant leaves
31. The species Attacus atlas, known for producing the largest cocoons among moths, is a source of: — Atlas silk (a type of wild silk)
32. Muscardine disease, characterized by a white powdery growth on the silkworm body, is caused by: — Beauveria bassiana
33. Which of the following is a fungal disease affecting silkworms, often appearing as a greenish or greyish mold on the body? — Muscardine
34. A deficiency in mulberry leaves can lead to stunted growth and reduced silk yield in silkworms, highlighting the importance of: — Nutrition
35. Mulberry cultivation, essential for Bombyx mori rearing, is a significant part of the sericulture industry and is known as: — Moriculture
36. What is the primary economic importance of sericulture? — Production of valuable silk fabric
37. Flacherie is a disease affecting silkworms caused by: — Bacteria
38. The larval stage of the silkworm, responsible for feeding and growth, is also known as the: — Larva
39. The pupal stage of the silkworm is characterized by: — Metamorphosis within the cocoon
40. The process of unwinding the silk filament from the cocoon is known as: — Reeling
41. What is the term for the process of removing the sericin gum from raw silk before weaving? — Degumming
42. Which of the following is a major challenge in silkworm rearing related to diseases? — Rapid spread in crowded conditions
43. Which of the following is a common by-product of silkworm rearing that can be used as a soil conditioner? — Larval excreta (frass)
44. Which of the following is a by-product of sericulture that can be used in cosmetics and pharmaceuticals? — Sericin
45. Which part of the silkworm's body is responsible for secreting the silk fibroin? — Silk glands
46. The raw silk filament is coated with a gummy substance called sericin. What is its primary role? — To bind the two filaments together and protect the cocoon
47. The silkworm species Antheraea assamensis is known for producing which type of silk? — Muga silk
48. The disease known as 'Atrophy' in silkworms is often linked to: — Poor nutrition and hygiene
49. The economic significance of Muga silk, unique to Northeast India, is primarily due to its: — Golden yellow color and luster
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