MODEL QUESTION PAPER 1
SUBJECT BIOLOGY(36)
Time: 3 Hours and 15 minutes Max Marks 70
GENERAL INSTRUCTIONS
i) This question paper consists of four parts A, B, C and D. Part D consists of wo parts,
Section I and Section 1 .
ii) All the parts are Compulsory:
iii) Draw diagrams wherever necessary. Unlabelled diagrams or illustrations do not
attract any marks.
PART A
Answer the following questions in One Word or One Sentence each:
10x 1 10
1. Define parthenogenesis.
2. What is spermiation?
3.
3. How does repressor protein prevent the transcription of structural genes?
4. Give an example for molecular diagnostic tool used in early diagnosis.
5. Define organic farming.
6. Restriction enzymes are considered as a type of endonucleases. WhyP
7. State Gause's competitive exclusion principle.
8.
8. Why is pyramid of energy always upright?
9 What are biodiversity hotspots?
10. Ozone layer in the stratosphere becomes thinner due to the release of
CFCs. Give a scientific reason for this.
PART-B
Answer any FIVE of the following questions in 3 5 sentences each,
wherever applicable: 10 5 x2
11. "Unless foetal ejection reflex is produced, normal parturition does not
occur". Substantiate the statement.
12. Mention any four categories of contraceptives with an example for each.
,13. What are multiple alleles? Why the alleles A and 15 for blood group are
considered codominant?
14. Write the karyotype of Turner's syndrome? Mention any two symptoms
of the syndrome.
15. Mention the function of RNA polymerase I and RNA polymerase II in
eukaryotes.
16. What is genetic code?
Explain any two salient features of genetic code.
17. Differentiate homologous and analogous organs.
18. Define gene therapy. Name a genetic disorder that is being treated
using the technique of gene therapy.
PART C
Answer any FIVE of the following Questions in 40-80 words each,
wherever applicable:
5 x3 15
19. Mention three differences between asexual and sexual
reproduction.
20. Explain the structure of a mature female gametophyte in flowering
plants.
21. How do intra -
uterine devices prevent
conception in humans?
22. State Hardy Weinberg principle. Write
-
the role of any two factors that
affect Hardy Weinberg equilibrium.
-
23. What are carcinogens? Mention any two groups of
carcinogens with an
example for each.
24. Write a short note on a case study of controlling vehicular pollution in
Delhi. What initiatives were taken by Delhi government for reducing
vehicular air pollution?
25. What is RNA interference? Explain how this novel
technique is exploited
in agriculture to protect tobacco plants from the infection of nematode
Meloidegyne incognitha?
n n l a i n any three major causes
of biodiversity loss in a given habitat.
, PART-D
SECTION -I
Answer any FOUR of the
following questions in 200 -
250 words
each, wherever applicable 4x5 20
27. What is
autogamy? Explain the devices that the plants have developed
to prevent this.
28. Explain the different steps involved in translation.
29. With a schematic representation explain the life cycle of HIV.
30. Explain briefly the steps invovled in recombinant DNA technology.
31. Define and describe the different stages involved in decomposition.
32. Explain any five effects of water pollution.
SECTION - II
following questions in 200 - 250 words
Answer any THREE of the
each, wherever applicable: 3 5 15
sectional view of the female reproductive
33. Draw the diagram of the
system in humans.
Mendel's experiment that describes
34. What is Punnett square? Explain
gene with
reference to hight of pea plant using
the inheritance of one
punnett square.
Show dagrammatic representation of types
35. What is natural selection?
traits in a population and add a
on the different
the natural selection
natural selection.
note on types of
of tissue culture in any three fields. (3)
36. a) Explain the applications
should be avoided in plants? (1)
continued inbreeding
b) Why
collection? (1)
c) What is germplasm
significance in ecosystem and add a note
Mention its
37. Define predation.
developed by plant and animal preys against
on defence mechanisms
their predators.
SUBJECT BIOLOGY(36)
Time: 3 Hours and 15 minutes Max Marks 70
GENERAL INSTRUCTIONS
i) This question paper consists of four parts A, B, C and D. Part D consists of wo parts,
Section I and Section 1 .
ii) All the parts are Compulsory:
iii) Draw diagrams wherever necessary. Unlabelled diagrams or illustrations do not
attract any marks.
PART A
Answer the following questions in One Word or One Sentence each:
10x 1 10
1. Define parthenogenesis.
2. What is spermiation?
3.
3. How does repressor protein prevent the transcription of structural genes?
4. Give an example for molecular diagnostic tool used in early diagnosis.
5. Define organic farming.
6. Restriction enzymes are considered as a type of endonucleases. WhyP
7. State Gause's competitive exclusion principle.
8.
8. Why is pyramid of energy always upright?
9 What are biodiversity hotspots?
10. Ozone layer in the stratosphere becomes thinner due to the release of
CFCs. Give a scientific reason for this.
PART-B
Answer any FIVE of the following questions in 3 5 sentences each,
wherever applicable: 10 5 x2
11. "Unless foetal ejection reflex is produced, normal parturition does not
occur". Substantiate the statement.
12. Mention any four categories of contraceptives with an example for each.
,13. What are multiple alleles? Why the alleles A and 15 for blood group are
considered codominant?
14. Write the karyotype of Turner's syndrome? Mention any two symptoms
of the syndrome.
15. Mention the function of RNA polymerase I and RNA polymerase II in
eukaryotes.
16. What is genetic code?
Explain any two salient features of genetic code.
17. Differentiate homologous and analogous organs.
18. Define gene therapy. Name a genetic disorder that is being treated
using the technique of gene therapy.
PART C
Answer any FIVE of the following Questions in 40-80 words each,
wherever applicable:
5 x3 15
19. Mention three differences between asexual and sexual
reproduction.
20. Explain the structure of a mature female gametophyte in flowering
plants.
21. How do intra -
uterine devices prevent
conception in humans?
22. State Hardy Weinberg principle. Write
-
the role of any two factors that
affect Hardy Weinberg equilibrium.
-
23. What are carcinogens? Mention any two groups of
carcinogens with an
example for each.
24. Write a short note on a case study of controlling vehicular pollution in
Delhi. What initiatives were taken by Delhi government for reducing
vehicular air pollution?
25. What is RNA interference? Explain how this novel
technique is exploited
in agriculture to protect tobacco plants from the infection of nematode
Meloidegyne incognitha?
n n l a i n any three major causes
of biodiversity loss in a given habitat.
, PART-D
SECTION -I
Answer any FOUR of the
following questions in 200 -
250 words
each, wherever applicable 4x5 20
27. What is
autogamy? Explain the devices that the plants have developed
to prevent this.
28. Explain the different steps involved in translation.
29. With a schematic representation explain the life cycle of HIV.
30. Explain briefly the steps invovled in recombinant DNA technology.
31. Define and describe the different stages involved in decomposition.
32. Explain any five effects of water pollution.
SECTION - II
following questions in 200 - 250 words
Answer any THREE of the
each, wherever applicable: 3 5 15
sectional view of the female reproductive
33. Draw the diagram of the
system in humans.
Mendel's experiment that describes
34. What is Punnett square? Explain
gene with
reference to hight of pea plant using
the inheritance of one
punnett square.
Show dagrammatic representation of types
35. What is natural selection?
traits in a population and add a
on the different
the natural selection
natural selection.
note on types of
of tissue culture in any three fields. (3)
36. a) Explain the applications
should be avoided in plants? (1)
continued inbreeding
b) Why
collection? (1)
c) What is germplasm
significance in ecosystem and add a note
Mention its
37. Define predation.
developed by plant and animal preys against
on defence mechanisms
their predators.
