Amity International GTSE Class XII Biology Sample Paper : Global Talent Search Examination
Name of the Organisation : AMITY
Name of the Exam : Amity International GTSE Global Talent Search Examination
Document Type : Sample Papers
Class : XII
Subject : Biology
Website : http://www.amity.edu/aice/gtse.aspx
AMITY GTSE Examination Class XII Sample Paper
Question Paper of Amity International Olympiad GTSE Global Talent Search Examination Class XII Biology Question Paper is now available in the official website of AMITY International
Related / Similar Question Paper :
AMITY International GTSE Class XI Biology Question Paper
General Instructions
1. All questions are compulsory. First 15 minutes for reading instructions.
2. This paper contains 50 objective type questions. Each question or incomplete sentence is followed by four suggested answers or completions. Select the one that is the most appropriate in each case and darken the correct alternative on the given answer-column, with a pencil or pen.
3. For each correct answer 2 marks will be awarded and there is no negative marking.
4. No extra sheet will be provided.
5. Use of calculators & mobile is not permitted in examination hall.
6. Use of unfair means shall invite cancellation of the test
Download Question Paper :
Biology : https://www.pdfquestion.in/uploads/GTSEXIIBio.pdf
Model Questions
Max Marks: 100
Time: 11:30 to 12:45 p.m
1. Cadmiumpollution is associated with
(a) Minimata
(b) Itai-itai
(c) Bloom syndrome
(d) Blue-baby syndrome
2. Agamospermous apospory is formation of embryo
(a) From egg of embryo sac proliferated from a nucellar cell
(b) From egg of embryo sac formed directly from megaspore mother cell
(c) Direct from nucellus
(d) Direct from integument
3. Which one of the following is the most active RNA polymerase in eukaryotes?
(a) RNA polymerase I
(b) RNA polymerase II
(c) RNA polymerase III
(d) All of these
4. Which one of the following has minimum diameter?
(a) A DNA
(b) B DNA
(c) C DNA
(d) Z DNA
5. Which of the following is an incorrect statement?
(a) In bacteria the translation starts only when transcription is completed
(b) Translation on a mRNAbegins while transcription is still going on
(c) Capping occurs at the 5′ end of the mRNA in eukaryotes only
(d) The split genes occur in eukaryotes only
6. Which one of the following does polymerisation in 5′ to 3′ direction and exonuclease activity in both 5′ and 3′ as well as 3′ to 5′ direction
(a) DNA polymerase I
(b) DNA polymerase II
(c) DNA polymerase III
(d) Exonuclease
7. Which one of the following reduces the rate of transcription?
(a) Enhancer
(b) Silencer
(c) Pribnow box
(d) G–C box
8. The leader sequence in a mRNA is the
(a) Coding region in the prokaryotes
(b) Non-coding region in the prokaryotes
(c) Coding region in the eukaryotes
(d) Non-coding region in the eukaryotes
9. Replication of DNA is
(a) Unidirectional in prokaryotes and bidirectional in eukaryotes
(b) Bidirectional in prokaryotes and unidirectional in eukaryotes
(c) Unidirectional in both prokaryotes as well as in eukaryotes
(d) Bidirectional in prokaryotes as well as eukaryotes
10. Biological organization starts with :
(a) Cellular level
(b) Organismic level
(c) Atomic level
(d) Submicroscopic molecular level
11. Identify the odd combination of the habitat and the particular animal concerned :
(a) Sunderbans – Bengal Tiger
(b) Periyar – Elephant
(c) Rann of Kutch – WildAss
(d) Dachigam National Park – Snow Leopard
12. In which one of the following the BOD (Biochemical Oxygen Demand) of sewage (S), distillery effluent (DE), paper mill effluent (PE) and sugar mill effluent (SE) have been arranged in ascending order ?
(a) SE < PE < S < DE
(b) PE < S < SE < DE
(c) S < DE < PE < SE
(d) SE < S < PE < DE
13. One of endangered species of Indian medicinal plants is that of
(a) Ocimum
(b) Zingiber
(c) Nepenthes
(d) Podophyllum
14. Geometric representation of age structure is a characteristic of :
(a) Population
(b) Landscape
(c) Ecosystem
(d) Biotic community
15. An embryo sac is termed monosporic when it develops
(a) From the megaspore mother cell without formation of walls between its successively formed daughter nuclei
(b) From one of two daughter cells of the megaspore mother cell formed after the first nuclear division which is followed by wall formation
(c) From one of the three daughter cells of the megaspore mother cell where its first division gives rise to two cells one of which forms the embryo sac and the second cell divides again to form two abortive cells
(d) From one of the four daughter cells formed from the megaspore mother cell as a result of meiosis
16. Rarely among angiosperms, embryo sac like organization is seen in the pollen grain. This abnormality is called
(a) Metaxenia
(b) Nemec phenomenon
(c) Xenia
(d) Mesogamy
17. Double fertilization means
(a) Fusion of the nucleus of the male gamete with the egg nucleus
(b) Fusion of two polar nuclei
(c) Fusion of the sperm nucleus with the secondary nucleus
(d) Fusion of one spermnucleus with egg nucleus and fusion of the other spermnucleus with secondary nucleus
18. Water holding capacity of a soil is increased due to
(a) High rainfall
(b) Regular irrigation
(c) High content of humus
(d) Rich amount of minerals
19. Very good heterosis in maize crop can be obtained by crossing
(a) Cross pollinating varieties
(b) Inbred lines
(c) Varieties which have shown self-sterility
(d) Varieties which give a very high yield as a result of outbreeding
20. The germination of seed is favoured by
(a) Red light and PR
(b) Red light and PFR
(c) Far red light and PR
(d) Far red light and PFR
21. Increase of protein content in potato tubers has been possible by the
(a) A cross between groundnut and potato
(b) A cross between soybean and potato
(c) Somaclonal variation
(d) Introducing the nif gene into potato
22. XXYY condition denotes
(a) Supermale
(b) Superfemale
(c) Klinefelter syndrome
(d) Turner syndrome
23. Which one of the following is incorrect ?
(a) In diplospory the egg is diploid
(b) In apospory the egg is diploid
(c) Polyembryony is never seen in apomictic embryos
(d) Both (b) and (c)
24. Endoploidy occurs in the cells of the
(a) Tapetum
(b) Nodules
(c) Ovules
(d) Both (a) and (b)
25. Virus free plant is obtained by culturing which of the following part of an virus infected plant ?
(a) Shoot apex
(b) Stem
(c) Flower
(d) Seed
26. Bacillus subtilis and Aspergillus niger are regarded as the best source of
(a) Amylases
(b) Lactases
(c) Proteases
(d) Lipases
27. A disease contracted through wounds, accidents and improperly sterilised surgical instruments is
(a) Tetanus
(b) Gonorrhoea
(c) Mumps
(d) Amoebiasis
28. Why the adult stem cells are not preferred over embryonic stem cells though they are as flexible as cells from human embryo?
(a) Stem cells from adults have not been found for all tissues of the body.
(b) They are present in minute quantity and difficult to isolate and purify.
(c) They have less capacity to proliferate.
(d) All of the above.
29. Honey has a high concentration of sugar but doesn’t decay, because
(a) It contains natural antioxidant that prevents the bacterial attack
(b) Bacteria can’t survive in an active state in a solution of high osomotic strength causing plasmolysis due to exosmosis
(c) Bacteria cannot survive in active states as it is totally deprived of oxygen
(d) None of the above
30. Neoplasms are
(a) Nuclei with massive DNA
(b) Cells without covering membranes
(c) Cells capable of unlimited division
(d) Newly produced cells formed through uncontrolled cell proliferation