HP Board 12th Class Model Test Paper 2023 Biology

QUESTION PAPER (TERM - II) (2022-23) (vii) Question nos. 21 to 27 are of 2 marks each. Answer
CLASS - +2 each of them in 30–40 words.
(viii) Question nos. 28 to 29 are of 3 marks each. Answer
SUBJECT - BIOLOGY
each of them in 80–90 words.
Time : 3 hours M.M. : 50 (ix) Question nos. 30 to 31 are of 5 marks each. Answer
• Candidates are required to give their answers each of them in 150–180 words.
in their own words as far as possible. (x) Draw neat and well labelled diagrams wherever
• Marks alloted to each question are indicated necessary.
against it. Section-A
Special Instructions : 1. Rheumatoid arthritis is caused when.
(i) While answering your questions, you must indicate (a) Lymphocytes become more active
on your answer book. The same question no, as it (b) Body attacks self cells
appears on your question paper. (c) More antibiotics are produced in the body
(ii) Do not leave blank page/pages in your answer Foreign
book.
(d) The ability to differentiate pathogens of
(iii) All questions are compulsory. Internal choice in Foreign molecules from self cells is lost 1
given in some
same questions.
2. Opium is obtained from which part of white poppy
(iv) There are two sections in question paper : Section- plant?
A and Section B.
(a) Leaves (b) Roots
(v) Section A consists of 20 questions of 1 mark each
(c) Stems (d) Unripe capsules 1
MCQ, Assertion and Reason, Match the column
type. 3. The tumors that remain confined to their original
location and do not spread to other parts of the
(vi) Section B consists of 11 questions i.e. Q. No. 21 to
body and cause little damage are called. 1
Q.No. 31

(a) Malignant tumors (b) Metastatic tumors (c) Trichoder ma, Baculovirus, Bacillus
(c) Benign tumors (d) Cancerous tumors thuringenesis
4. Which of the following is a fungal disease? (d) Osicllatoria, Rhizobium, Trichodurma
Trichoderma 1
(a) Ascariasis (b) Malaria 8. Match the following :
(c) Gonorrhoea (d) Ringworm 1 Column I Column II
5. Besides converting milk into curd, the lactic acid
(a) Genetic Cloning vector
bacteria, also improves its nutritional quality by
engineering
increasing. 1
(a) Vit A (b) Vit C (b) Vehicle DNA Vector less gene transfer

(c) Vit B12 (d) Vit E (c) Electroporation Restriction
6. Which of the following mixture of gases represents endonuclease
biogas? (d) Sticky ends Recombinant DNA
(a) Methane, Hydrogen sulphide and carbon technology 1
monoxide
dioxide (a) 1 (b), 2 (a), 3 (c), 4 (d)
(b) Methane, Hydrogen sulphide and carbon (b) 1 (d), 2 (b), 3 (a), 4 (c)
monoxide
monoxide
(c) 1 (d), 2 (a), 3 (b), 4 (c)
(c) Methane, Hydrogen disulphide and carbon
(d) 1 (a), 2 (b), 3 (c), 4 (d)
dioxide
monoxide
(d) Methane, Hydrogen sulphide and Nitrogen 9. The cut fragments of DNA can be separated by. 1
monoxide
oxide 1 (a) Chromatography
7. Select the correct group of biocontrol agents. (b) Spectrophotometry
(a) Nostoc, Azospirillium, Nucleopolyhedrovirus (c) Gel electrophoresis
(b) Bacillus thuringensis, Tabaccoo mosaic virus, (d) X-ray diffraction
Aphids

10. Eli Lilly company launched genetically modified 15. During biotic succession, the first community to
human insluin in. 1 inhabit an area is called. 1
(a) 1963 (b) 1982 (a) Climax community
(c) 1983 (d) 1993 (b) Transition community
11. The first clinical gene therapy was given for which (c) Pioneer community
genetic disorder? 1 (d) Seral community
(a) Diabetes (b) ADA deficiency 16. Which of the following is a charateristics of food
(c) Down's syndrome (d) Muscular
Musclar dystrophy web? 1

12. Hibernation and aestiration are commonly seen (a) It is formed by interlinking of food chain
in. 1 (b) It is provides alternative pathways of food
(a) Homother ms (b) Poikilotherms availality.
Homeother ms
(c) Both (a) and (b) (d) Neither (a) nor (b) (c) It provides less stability to the ecosystem.
(d) Both (a) and (b) 1
13. Cuscute is an example of.
17. Corbett National park is located in. 1
(a) Endoparasitism (b) Brood parasitism
(a) Punjab (b) Uttranchal
(c) Ectoparasitism (d) Predation 1
(c) Haryana (d) Himachal Pradesh
14. Lichens represent a mutualistics relationship
between. 1 18. The number of terrestrial biodiversity hot spots
throughout the world is. 1
(a) A fungus and ebryophyte
(a) 20 (b) 24
(b) An alga and a fungus
(c) 30 (d) 25
(c) Roots and a fungus
Directions for Q. No. 18 and 19
(d) An alga and a pteridophyte 1
The following questions consists of two statements:

Assertion (A) and Reason (R). To answer these 23. What is PCR? Who developed this technique?
questions, mark the correct alternative as directed Write the names of various steps of this
below : technique. 2
(a) If both A and R are true and R is the correct Or
explanation of A.
What is particle bombardment gun method? Who
(b) If both A and R are true and R is the correct
developed this technique? What is its function in
explanation of A.
Biotechnology? 2
(c) If A is true but R is false
24. Differentiate between Regulators and
(d) If both A and R are false
Conformers. 2
19. Assertion: Domesticated plants and animals are
not included in wild life. 25. Write a short note on adaptations of desert plants
and animals. 2
Reason : They flourish only under human care
(a) (b) 26. What are the major causes of species losses in a

(c) (d) 1 geographical region? 2

20. Assertion: Many hydrophytes lack roots. Or
Reason : Roots are used for balancing What is the significnce
significance of the slope of regression

(a) (b) in a species area relationship? 2
(c) (d) 1 27. Briefly explain the following :
Section-B (a) Biological magnification
21. What is the key difference between primary and (b) Eutrophication 1+1
secondary sewage treatment? 2
28. What are the advantages and disadvantages of
22. What are cry proteins? Name the organism that
genetic modified crops. 3
produce it. How has man exploited this protein to
his benefit? 2 Or

(a) How does RNA interference help in
developing resistance in Tobacco plant
nematode infection.
against nematcode infection.
(b) Define bipiracy
biopiracy 2+1
29. (a) The ozone layer is present in which layer of
atmosphere. Name the units which thickness
of ozone layer is measured.
(b) What is Jhum cultivation? What are its
disadvantages? 1½+1½
30. (a) What is anaphylactic shock?
(b) Name the causative agent of Filaratsis.
Filariasis. Why
Why
the diseases is also called elephantiasis.
(c) Expand the following abbreviations.
(i) MALT (ii) NACO
(iii) AIDS (iv) GEAC
1½+1½=2
31. Define ecological pyramids and describe with
examples, pyramids of number and biomass. 5
Or
(a) Distinguish between hydrarch sucession and
xerarch succession.
(b) Draw carbon cycle in nature
(c) Give an account of energy flow in an
ecosystem. 1+2+2

PAPER PATTER AND SYLLABUS (TERM -II)
CLASS - +2
SUBJECT - BIOLOGY

Time : 3 hours M.M. : 50

Unit/Chapter no. No. of Question/marks Total marks
and name One mark Two marks Three marks Five marks Chapter-wise
Questions Questions Questions Questions
(MCQ)

Unit VIII : Biology in Human Welfare

8. Human health and diseases 4 – – 1 09

10. Microbes in Human welfare 3 1 – – 05

Unit IX : Biotechnology

11. Biotechnology : Principles and 2 2/Int. Choice – – 06
Processes

12. Biotechnology : and its 2 – 1/Int. Choice – 05
applications

Unit X : Ecology

13. Orgaisms and Population 4 2 – – 08

14. Ecosystem 2 – – 1/Int. Choice 07

15. Biodiversity and Conservation 3 1/Int. Choice – – 05
05

16. Environmental Issues – 1 1– 05

Total Questions 20 07 02 02 50

(Each category) Total Questions = 31 (Total Marks)