Organisation : Bihar School Examination Board (BSEB)
Class : XII
Paper: Biology
Document Type : Model Question Papers
Year : 2017
Website : http://www.biharboard.ac.in/model-question-papers/
Download Question Paper : https://www.pdfquestion.in/uploads/10254-Biology2017.pdf
Biology Model Question Papers :
Choose the correct answer :- (1 marks each)
1. In which of the following fertilization needs water medium-
(a) Angiosperms
(b) Bryophytes
(c) Gymnosperms
(d) All
Related : BSEB XII Commerce Model Question Paper 2017 : www.pdfquestion.in/10251.html
2. Select the odd one out with respect to haemophilia-
(a) X–linked dominant disorder
(b) Bleedder’s disease
(c) Criss-cross inheritance
(d) X-linked recessive disorder
3. Minimata disease is due to pollutant-
(a) SO2
(b) H2S
(c) Mercury
(d) Lead
4. Which of the following is the high-milk yielding variety of cow ?
(a) Dorset
(b) Holstein
(c) Pashmina
(d) Nellore
5. Binary fission is found in-
(a) Amoeba
(b) Paramoecium
(c) Water hyacinth
(d) Amoeba and Paramoecium both
6. In the XX ? XO type of sex determination-
(a) Females produce only one type of eggs
(b) Females have only one X-chromosome
(c) Males have two X-chromosomes
(d) Males are homogametic
7. A secondary pollutant is
(a) Aerosol
(b) CO2
(c) PAN
(d) CO
8. Taichung Native-1 is a variety of
(a) Wheat
(b) Rice
(c) Sugarcane
(d) Maize
9. Fusion of gametes is called
(a) Pollination
(b) Sugarcane
(c) Parthenogenesis
(d) Sporogenesis
10. Which of the following genotype will produce 4 different types of gametes ?
(a) AAbbccddEE
(b) aaBbccdd
(c) AaBbCC
(d) Aabb
11. Who proposed the term ecosystem ?
(a) Odum
(b) Tansley
(c) Warming
(d) Gardner
12. Method of producing thousands of plants through tissue culture is called
(a) Micropropagation
(b) Somatic hybridization
(c) Somatic embryogenesis
(d) Anther culture
13. Which of the following is called ‘Terror of Bengal’ ?
(a) Bryophyllum
(b) Water hyacinth
(c) Agave
(d) Banana
14. Holandric genes are found on
(a) X-chromosome
(b) Y-chromosome
(c) Sex chromosome or autosome
(d) Autosome
15. Acid rain is caused by
(a) SO2, SO3
(b) SO2, CO
(c) CO, NH3
(d) SO2, NH3
16 .Artificial insemination cannot be practiced in
(a) Horses
(b) Camels
(c) Fish
(d) Goats
17. Infective stage of Plasmodium is
(a) Sporozoits
(b) Tropozoits
(c) Cryptozoits
(d) Metacryptozoits
18. Cause of diabetes is
(a) Deficiency of sodium
(b) Deficiency of iodine
(c) Deficiency of Enzyme
(d) Deficiency of Hormone
19. What is available in Dairy farm
(a) Milk
(b) Butter
(c) Cheese
(d) All
20. T-cells are responsible for
(a) Humoral immunity reaction
(b) Cell mediated immune reaction
(c) Formation of antibody
(d) Making heparin
Very Short Questions :– (2 marks each)
Q1. Differentiate between gametogenesis and embryogenesis ?
Q2. What do you understand by parthenogenesis ?
Q3. Mention the functions of antibody ?
Q4. Differentiate between linkage and crossing over.
Q5. Write on control of sound pollution
Q6. Differentiate between Innate and Acquired Immunity ?
Q7. Name the hormones involved in regulation of spermatogenesis.?
A) Write a PRÉCIS of the following passage in about90 words. State the number of words in your précis…Use the sheets provided and secure them to the answer
Business communication is about getting your message across clearly and in a professional manner Writing letters and sending them by e-mail different. But people, who are normally competent and confident letter writers somehow find themselves he Assitant when it comes to business e-mail.
This is probably because it is very hard to find there it is too easy to drop into the casual conversational mode.Write e-mail letters as you would write a normal business letter E-mail may be global built has not yet broken down international business
Doing business by e-mail can be about personal-young know your reader exists in the real world | Making contact by phone as well is a good way to build your relationship, Reply to e-mails promptly, As with ‘I’ll get back to you’ is better than silence.
Answer any one of the following: 15
Write a letter to your friend about your recent trip to a his toric place in.Karnataka.
OR
Write a letter of complaint to the authorities concerned regarding the opening
of a bar-cum-restaurant in your locality.
C) Write an essay on any one of the following topics in about 300 words: 25
a) Global warming: causes and medics.
b) Imaginary meeting with an icon(dead or living)-scientists/actors/politicians
may be considered.
c) “Reading is to the mind what exercise is to the body’ – Comm