11th Standard Syllabus & Materials
11th Standard
Tamilnadu 11th Standard Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365
NEW11th Standard
Tamilnadu 11th Standard Tamil கேடில் விழுச்செல்வம் - உரைநடை - தமிழகக் கல்வி வரலாறு Important Questions And Answers Study Material - QB365
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set B
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set B

Published on: 12/09/2019
Zoology - Trends in Economic Zoology
Download Tamil Nadu 11th Standard Biology question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Biology Test1.
Choose the correctly matched pair.
Egg layers - Brahma
Broiler types - Leghorn
Dual purpose - White Plymouth rock
Ornamental breeds - Silkie
2.
Inland fisheries are _____.
deep sea fishing
capturing fishes from sea coast
Raising and capturing fishes in fresh water
oil extraction from fish
3.
Prawn belongs to the class ______.
Crustacea
Annelida
Coelenterata
Echinodermata
4.
Rearing of honey bee is called __________
Sericulture
Lac culture
Vermiculture
Apiculture
5.
Silk is obtained from ________
Laccifer lacca
Nosema bombycis
Attacus ricini
Attacus mylitta
6.
Mention the advantages of MOET.
7.
List any three common uses of shellac.
8.
9.
Give the economic importance of Silkworm
10.
Write the advantages of vermicomposting.
11.
What is seed lac?
12.
Name the three castes in a honey bee colony
1.
(d)
Ornamental breeds - Silkie
2.
(c)
Raising and capturing fishes in fresh water
3.
(a)
Crustacea
4.
(d)
Apiculture
5.
(c)
Attacus ricini
6.
MOET-Multiple Ovulation embryo transfer technology:
1. Advantage of this technology is to produce high milk yielding females and high-quality meat yielding bulls in a short time.
2. It is applicable in animal husbandry.
3. It is a method of propagation of animals with desirable traits.
4. This method can be applied when the success rate of cross over even in low cost.
7.
1 Lac cut from the host plant is called 'Stick lac'.
2. The lac present on the twig is scraped and collected.
3. After grinding, the unnecessary materials like dusts and fine particles are removed.
4. The resultant lac is called 'seed lac'.
5. The seed lac is sun dried and then melted to produce 'shellac'.
Uses:
1. It is used as sealing wax.
2. It is used as filling material for gold ornaments.
3. It is used in preparation of shoe and leather polishes.
8.
9.
Economic importance of Silk:
1. Silk fibers are utilized in preparing silk clothes. Silk fibers are now combined with other natural or synthetic fibers to manufacture clothes like Teri-silk, Cot-silk etc.
2. Silk is dyed and printed to prepare ornamented fabrics. They are generally made from Eri-silk or spun silk.
2. Silk is used in industries and for military purposes.
3. It is used in the manufacture of fishing fibers, parachutes, cartridge bags, insulation coils for telephone, wireless receivers, tyres of racing cars, filter fibres, in medical dressings and as suture materials.
10.
Advantages of Vermicomposting:
1. Vermicompost is rich in essential plant nutrients.
2. It improves soil structure texture, aeration, and water holding capacity and prevents soil erosion.
3. Vermicompost is a rich in nutrients and an ecofriendly amendment to soil for farming and terrace gardening.
4. It enhances seed germination and ensures good plant growth.
11.
1. Lac cut from the host plant is called stick lac.
2. The lac present on the twig is scraped and collected.
3. After grinding the unnecessary materials like dust and fine particles are removed.
4. The resultant lac is called seed lac.
12.
(i) A well developed honeybee colony consists of the Queen, Drones and workers.
(ii) There is normally one Queen, 10,000 to 30,000 workers and few hundred drones in a colony.
(iii) They depend on each other for existence.
11th Standard Syllabus & Materials
11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set B
NEW11th Standard
Tamilnadu 11th Standard Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
Tamilnadu 11th Standard Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set B
Tamilnadu Stateboard 11th Standard Subjects

Maths

Commerce

Economics

Biology

Business Maths and Statistics

Accountancy

Computer Science

Physics

Chemistry

Maths

Biology

Economics

Physics

Chemistry

History

Business Maths and Statistics

Computer Science

Accountancy

Computer Applications

History

Computer Technology

Commerce

Computer Applications

Computer Technology

Tamil

English

French
Tamilnadu Stateboard Standards