12th Biology Model Set in English

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>> Class 12th Board Biology Model Set Paper Question on Latest Pattern


1. Water holding capacity is one of the qualities of –

(A) Soil

(B) Plants

(C) Water

(D) Animals

Answer:- (A)

2. Gametes are usually-

(A) Haploid

(B) Diploid

(C) Polyploid

(D) Nulliploid

Answer:- (A)

3. The phenotypic ratio for F2 generation in Incomplete dominace is- 

(A) 3:1

(B) 2:2

(C) 1:2:1

(D) None of these

Answer:- (A)

4. Uterus is related to-

(A) Male Reproductive system

(B) Female Reproductive system

(C) Plant Reproductive system

(D) All of these

Answer:- (B)

5. Amphibians among plants belong to-

(A) Algae

(B) Bryophytes

(C) Fungi 

(D) Pteridophytes

Answer:- (B)

6. Brewery is concerned with-

(A) Saccharomyces

(B) Protozoans

(C) Pteridophytes

(D) Marsupials

Answer:- (B)

7. Gynoecium is made up of-

(A) Stigma

(B) Style

(C) Ovary

(D) All of these

Answer:- (D)

8. In certain cases for early and accurate detection of disease we may use-


(B) Culture

(C) Chemical

(D) Analytical

Answer:- (A)

9. Sickle-cell anemia is related to which type of disease ? 

(A) Sex linked disease

(B) Autosomal linķed disease 

(C) Deficiency disease

(D) Metabolic disease

Answer:- (B)

10. For induction of alien DNA in host cell we may use-

(A) Gene gun 

(B) Micro-pipette

(C) Both (A) & (B)

(D) None of these board

Answer:- (C)

11. The anterior portion of sperm is covered by a cap like structure known as-

(A) Acrosome 

(B) Mesosome

(C) Episome 

(D) Spherosome

Answer:- (A)

12. ampR gene is responsible for developing resistance in 

(A) Pest

(B) Insect

(C) Antibiotic

(D) Drought

Answer:- (C)

13. Yeast reproduces by means of-

(A) Budding 

(B) Fragmentation 

(C) Pollination 

(D) All of these

Answer:- (A)

14. Uracil is related to-

(A) RNA 


(C) Both (A) & (B)

(D) None of these

Answer:- (C)

15. Lac operon represents 

(A) Inducible gene system

(B) Repressible gene system, 

(C) Housekeeping gene system

(D) All of these

Answer:- (A)

16. S.L. Miller is related to 

(A) Origin & Evolution of life

(B) Use and disuse theory of evolution

(C) Neo-Darwinism

(D) Neo-Lamarckism

Answer:- (A)

17. Number of deaths during a limited time period and place for a particular population is known as 

(A) Natality

(B) Mortality

(C) Migratory

(D) Integrity

Answer:- (B)

18. RNAi is used to control pests on which plant?

(A) Tobacco

(B) Mango

(C) Potato

(D) Poppy

Answer:- (A)

19. Amplification of gene for interest may be done by-




(D) All of these

Answer:- (B)

20. Dryopithecus is more similar to –

(A) Ape 

(B) Gorilla

(C) Chimpanzee 

(D) Man

Answer:- (A)

21. Organic evolution was preceded by chemical evolution, the champions of this theory are.

(A) A.I. Oparin and J.B.S. Haldane

(B) Charles Darwin

(C) Arrhenius 

(D) Baptiste Lamarck

Answer:- (A)

22. Synthesis of RNA on DNA template is known as 

(A) Translation 

(B) Transcription

(C) Transduction

(D) Replication

Answer:- (B)

23. Pisciculture is related culture of 

(A) Aquatic plants

(B) Aquatic animals 

(C) Silk worms

(D) Lac worm

Answer:- (B)

24. Cry IAb controls 

(A) Corn Borer

(B) Wheat Rust 

(C) Cotton insects

(D) Maize height insects

Answer:- (C)

25. Taichung is a variety of –

(A) Rice

(B) Wheat

(C) Maize

(D) Sugarcane

Answer:- (A)

26. Which of the following is a wrong pair ? 

(A) G≡C

(B) T=A

(C) A=U

(D) T= U

Answer:- (D)

27. Flowers of  Vallisneria species are 

(A) Aneinophilous

(B) Entomophilous

(C) Hydrophilous 

(D) Zoophilous

Answer:- (C)

28. For Nitrogen fixation in soil we may use- : 

(A) Cyanobacteria

(B) Protozoans

(C) Nematodes 

(D) Wheat plants

Answer:- (A)

29. Bio reactors provide optimal conditions to produce désired-

(A) Product

(B) Organism

(C) Medium

(D) All of these

Answer:- (D)

30. Tuberculosis is transmitted by 

(A) Air

(B) Water

(C) Insect

(D) Contact

Answer:- (A)

31. climax community is present in which area ? 

(A) In equilibrium

(B) In transition

(C) Bare land 

(D) None of these

Answer:- (A)

32. Restriction enzymes are known as –

(A) Biological guns

(B) Molecular scissors

(C) Plasmid 

(D) Micro Pipette

Answer:- (B)

33. Opium is obtained from –

(A) Papaver somniferum

(B) Erythroxylum coca

(C) Cannabis sativa

(D) Atropa belladonna

Answer:- (A)

34. B-lymphocytes are produced in 

(A) Bone marrow

(B) Thymus

(C) Blood 

(D) Lymph

Answer:- (A)

35. Transgenic mice may be used for testing of –

(A) The safety of vaccines

(B) Efficiency of fertilizers 

(C) Doses of antibiotic

(D) All of these

Answer:- (A)

36. Pyrimidines present in DNA are –

(A) Thymine and Cytosine

(B) Adenine and Guanine

(C) Cytosine and Uracil

(D) Thymine and Uracil

Answer:- (A)

37. Anemophily is pollination by 

(A) Birds

(B) Bats

(C) Snails

(D) Wind

Answer:- (D)

38. Green plants in an ecosystem are –

(A) producers 

(B) consumers

(C) decomposers

(D) none of these

Answer:- (A)

39. Mendel selected –

(A) Gram

(B) Pinus

(C) Tomato

(D) Garden pea

Answer:- (D)

40. Which one of the following is unisexual ? 

(A) Mustard 

(B) China rose

(C) Papaya 

(D) none of these

Answer:- (C)

41. Which one of the following is the correct food chain ? 

(A) Grass, Wheat and Mango

(B) Grass, Goat and Lion. 

(C) Goat, Cow and Grass

(D) Grass, Fish and Goat

Answer:- (B)

42. Which vitamin is found in golden rice ? 

(A) B12

(B) A

(C) D

(D) C

Answer:- (A)

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