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: 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.
Identify the structure that the archenteron becomes in a developing animal.
2.
Compare closed and open circulatory system.
3.
List the features that all vertebrates show at some point in their development.
4.
What are the four characteristics common to most animals?
5.
Why are spongin and spicules important to a sponge?
1.
(i) In the gastrula stage of embryo on the root of gastrocoel an archenteron is formed.
(ii) Archenteron develops chordodorsatis or notochord dorsally.
(iii) Its anterior end forms brain and posterior axis form spinal cord.
Eg: Hemichordates and chordates.
2.
The circulatory system is of two types,
1. Open type: The blood remains filled in tissue spaces due to the absence of blood capillaries.
Eg: Arthropods, Molluscs, Echinoderms, and Urochordates
2. Closed type: The blood Is circulated through blood vessels of varying diameters (arteries, veins, and capillaries)
Eg: Annelids, Cephalochordates and Vertebrates.
3.
(i) All the vertebrates commonly have dorsal nervous system
(ii) At the stage of development they have blastopore of embryo
(iii) Heart is developed ventrally
(iv) All vertebrates are three layered
(a) Ectoderm
(b) Mesoderm and
(c) Endoderm
(v) All verteberates are bilaterians
(vi) All verteberates are enterocoelomates
4.
(i) Heterotrophic nutrition
(ii) Reserve food is glycogen
(iii) All animals are eukaryotes
(iv) Locomotion is the most common feature of animals
5.
(i) Both the spongin and spicules are the components of exoskeleton of sponges.
(ii) A hard exoskeleton protects the animals from external environment.
(iii) Both the components are produced by scleroblasts.
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
