
	Trending ▼ ICSE CBSE 10th ISC CBSE 12th CTET GATE UGC NET Vestibulares ResFinder

CBSE XII Pre Boards 2015 : BIOLOGY with Answers (KV Chennai)

7 pages, 44 questions, 15 questions with responses, 19 total responses,

	Kendriya Vidyalaya Air Force Stn Sulur Kendriya Vidyalaya Air Force..., Sulur, Coimbatore	+Fave Message
	Profile Timeline Uploads

Home > kv_kendriya_vidyalaya_sulur > F Also featured on: kv_kendriya_vidyalaya_iitchennai sanjls

Formatting page ...

KENDRIYA VIDYALAYA SANGATHAN CHENNAI REGION CLASS XII COMMON PRE BOARD EXAMINATION 2014-2015 Subject :Biology Time Allotted: 3 hrs Max .Marks : 70 General Instructions: (i) All questions are compulsory. (ii ) This question paper consists of four Sections A, B, C and D.Section A contains 5 questions of one mark each, Section B is of 5 questions of two marks each, Section C is of 12 questions of 3 marks each and a VBQ of 4 mark, Section D is of 3 questions of five marks each. (iii) There is no overall choice. However, an internal choice has been provided in one question of 2 marks, one question of 3 marks and all the three questions of 5 marks weightage. A student has to attempt only one of the alternatives in such questions. (iv) Wherever necessary, the diagrams drawn should be neat and properly labelled. SECTION: A 1. What does the term dioecious denote in plants? 1 2. In a dihybrid cross, when would the proportion of parental gene combinations be much higher than non-parental types as experimentally shown by Morgan? 1 3. What is biopiracy? 1 4. Name the amino acids having only one codon. 1 5. What is the role of Morphine in the patients those who have undergone surgery? 1 SECTION: B 6. IARI has released several varieties of crop plants that are biofortified .Give two examples of such crops and their biofortification. 2 7. In several species such as papaya, male and female flowers are present on different plants. What are the types of pollination prevented by this condition? 2 8. What are UTRs in mRNA? What is its role? 2 9. What is interspecific hybridization? Give an example. 2 10. Mention how e-waste is produced and disposed of.What is the solution for this problem? OR What are sacred groves? Mention the sacred groves in Rajasthan and Meghalaya. 2 SECTION: C 11. What are the advantages offered by seeds to angiosperms? 3 12. Name the three layers of tissues which form the wall of the uterus .Write its role. 3 13. A pregnant human female was advised to undergo MTP.It was diagnosed by the doctor that the fetus she is carrying has developed from a zygote formed by an XX egg fertilized by Y-carrying sperm. Why was she advised to undergo MTP? 3 Page 1 of 3

Formatting page ...

Top Contributors
to this ResPaper
(answers/comments)

Fahadh
(5)

Abhinand Jaikishan
(4)

Sanath Ks
(3)

Roshith Subash
(3)

Formatting page ...

Tags : kendriya vidyalaya kv air force station sulur, coimbatore, tamil nadu, chennai, cbse pre boards, prelims preliminary exams, cbse specimen / guess / mock papers / books, cbse india portal, central board for secondary education, answer keys, top schools, cbse question bank, cbse model test papers with answers, solved question papers of cbse last year, previous years papers with solutions, free download pdf online cbse paper, cbse syllabus, pattern, dates notification, application forms, india cbse board sample last 10 years, clat important questions preparation, how to prepare, 2015, 2014.

kv_kendriya_vidyalaya_sulur chat

Horizontal lines at:
Guest Horizontal lines at:
AutoRM Data:
Box geometries: