11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil இயற்கை வேளாண்மை,சுற்றுச்சூழல் -செய்யுள் - மனோன்மணீயம் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil என்னுயிர் என்பேன் -துணைப்பாடம் - இசைத்தமிழர் இருவர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A
Published on: 13/05/2022
QB365 provides detailed and simple solution for every book back questions in class 11 Biology subject.It will helps to get more idea about question pattern in every book back questions with solution.
latest Book back QuestionsDownload 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.
Resistance in the airways is typically low. Why? Give two reasons.
2.
Which structure seals the larynx when we swallow?
3.
Name the enzyme that catalyses the bicarbonate formation in RBCs.
4.
Name the respiratory organs of flatworm, earthworm, fish, prawn, cockroach and cat.
5.
Air moving from the nose to the trachea passes through a number of structures. List in order of the structures.
1.
(i) Entry of air with high pressure may collapse the tracheal tree.
(ii) The smooth muscles which contract and relax to adjust the diameter of air passage with a typical resistance against airways under normal pressure.
2.
(i) A thin elastic flap called epiglottis is found in the upper respiratory tract.
(ii) It prevents the food from entering into the larynx.
(iii) It avoids choking of food.
3.
RBCs contain an enzyme carbonic anhydrase
(i) It catalyses the carbonic acid (H2CO3) which is unstable and breaks into HCO-3 and H+ ions.
(ii) This enzyme facilitates the reaction in both directions. They are
4.
| S.No. | Animals | Respiratory organs |
| 1. | Flatworm | Skin or body surface |
| 2. | Earthworm | Moist skin |
| 3. | Fish | Gills |
| 4. | Prawn | Gills |
| 5. | Cockroach | Trachea |
| 6. | Cat | Lungs |
5.
External nostrils → Nasal cavity → Internal nostrils → Nasopharynx → Larynx → Trachea → Bronchi → Bronchioles → Hilum → Lungs → Bronchioles → Alveoli
11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - துணைப்பாடம் - யானை டாக்டர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set A
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
