Commerce (English Medium)
Science (English Medium)
Arts (English Medium)
Academic Year: 2016-2017
Date & Time: 4th April 2017, 12:30 pm
Duration: 3h
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- Section A contains questions number 1 to 5, very short-answer type questions of 1 mark each.
- Section B contains questions number 6 to 10, short-answer type I questions of 2 marks each.
- Section C contains questions number 11 to 22, short-answer type II questions of 3 mark each.
- Section D contains questions number 23, the value-based question of 4 marks
- Section E contains questions number 24 to 26, long-answer type questions of 5 marks each.
Answer the following question.
Name the type of cross that would help to find the genotype of a pea plant bearing violet flowers.
Chapter: [0.04] Principles of Inheritance and Variation
Answer the following question.
State two postulates of Oparin and Haldane with reference to the origin of life.
Chapter: [0.06] Evolution
Answer the following question.
A herd of cattle is showing reduced fertility and productivity. Provide one reason and one suggestion to overcome this problem.
Chapter: [0.08] Strategies for Enhancement in Food Production
Answer the following question.
What are Cry genes? In which organism are they present?
Chapter: [0.11] Organisms and Populations
Answer the following question.
An electrostatic precipitator in a thermal power plant is not able to generate a high voltage of several thousand. Write the ecological implication because of it.
Chapter: [0.04] Environmental Issues
Answer the following question.
A pollen grain in angiosperm at the time of dehiscence from an anther could be 2-celled or 3-celled.Explain.How are the cells placed within the pollen grain when shed at a 2-celled stage?
Chapter: [0.01] Reproduction in Organisms
Differentiate between the genetic codes given below:
Unambiguous and Universal
Chapter: [0.05] Molecular Basis of Inheritance [0.05] Molecular Basis of Inheritance [0.05] Molecular Basis of Inheritance
Differentiate between the genetic codes given below:
Degenerate and Initiator
Chapter: [0.05] Molecular Basis of Inheritance [0.05] Molecular Basis of Inheritance [0.05] Molecular Basis of Inheritance
Mention one application of the following:
Passive immunization
Chapter: [0.07] Human Health and Diseases
Mention one application of the following:
Antihistamine
Chapter: [0.07] Human Health and Diseases
Mention one application of the following:
Colostrum
Chapter: [0.07] Human Health and Diseases
Mention one application of the following:
Cytokinin-barrier
Chapter: [0.07] Human Health and Diseases
Name the microbes that help the production of the following product commercially:
Statin
Chapter: [0.08] Microbes in Human Welfare
Name the microbes that help the production of the following product commercially:
Citric acid
Chapter: [0.08] Microbes in Human Welfare
Name the microbes that help the production of the following product commercially:
Penicillin
Chapter: [0.08] Microbes in Human Welfare
Name the microbes that help the production of the following product commercially:
Butyric acid
Chapter: [0.08] Microbes in Human Welfare [0.08] Microbes in Human Welfare
Answer the following question.
List four benefits to human life by eliminating the use of CFCs.
Chapter: [0.04] Environmental Issues
Answer the following question.
Suggest two practices giving one example of each that help protects rare or threatened species.
Chapter: [0.13] Biodiversity and Its Conservation
Answer the following question.
Can a plant flowering in Mumbai be pollinated by pollen grains of the same species growing in New Delhi? Provide explanations to your answer.
Chapter: [0.01] Sexual Reproduction in Flowering Plants
Answer the following question.
Draw the diagram of a pistil where pollination has successfully occurred. Label the parts involved in reaching the male gametes to its desired destination.
Chapter: [0.01] Sexual Reproduction in Flowering Plants
Answer the following question.
Both Haemophilia and Thalessemia are blood-related disorders in humans. Write their causes and the difference between the two. Name the category of genetic disorder they both come under.
Chapter: [0.04] Principles of Inheritance and Variation
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Answer the following question.
List the two methodologies which were involved in the human genome project. Mention how they were used.
Chapter: [0.05] Molecular Basis of Inheritance
Answer the following question.
Expand ‘YAC’ and mention what it was used for.
Chapter: [0.09] Biotechnology - Principles and Processes
Answer the following question.
Write the characteristics of Ramapithecus, Dryopithecus, and Neanderthal man.
Chapter: [0.06] Evolution
Answer the following question.
Name a human disease, its causal organism, symptoms (any three) and vector, spread by intake of water and food contaminated by human faecal matter.
Chapter: [0.07] Human Health and Diseases
Answer the following question.
Why is there a fear amongst the guardians that their adolescent wards may get trapped in drug/alcohol abuse?
Chapter: [0.07] Human Health and Diseases
Answer the following question.
Explain ‘addiction’ and dependence’ in respect of drug/alcohol abuse in youth.
Chapter: [0.07] Human Health and Diseases
Answer the following question.
Write the desirable characters a farmer looks for in his sugarcane crop.
Chapter: [0.1] Biotechnology and Its Application
Answer the following question.
How did plant breeding techniques help north Indian farmers to develop cane with desired characters?
Chapter: [0.08] Strategies for Enhancement in Food Production
Answer the following question.
Secondary treatment of the sewage is also called Biological treatment. Justify this statement and explain the process.
Chapter: [0.08] Microbes in Human Welfare
Answer the following question.
Explain the significance of palindromic nucleotide sequence in the formation of recombinant DNA.
Chapter: [0.09] Biotechnology - Principles and Processes
Answer the following question.
Write the use of restriction endonuclease in the formation of recombinant DNA.
Chapter: [0.09] Biotechnology - Principles and Processes
Answer the following question.
Describe the roles of heat, primers, and the bacterium Thermus aquaticus in the process of PCR.
Chapter: [0.1] Biotechnology and Its Application
Answer the following question.
Explain the various steps involved in the production of artificial insulin.
Chapter: [0.1] Biotechnology and Its Application
Answer the following question.
‘‘Organisms may be conformers or regulators.’’ Explain this statement and give one example of each.
Chapter: [0.11] Organisms and Populations
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Answer the following question.
Why are there more conformers than regulators in the animal world?
Chapter: [0.11] Organisms and Populations
Answer the following question.
Describe the inter-relationship between productivity, gross primary productivity, and net productivity.
Chapter: [0.12] Ecosystem
Answer the following question.
It is commonly observed that parents feel embarrassed to discuss freely with their adolescent children about sexuality and reproduction. The result of this parental inhibition is that the children go astray sometimes.
Explain the reasons that you feel are behind such embarrassment amongst some parents to freely discuss such issues with their growing children.
Chapter: [0.01] Reproduction in Organisms [0.01] Reproduction in Organisms
Answer the following question.
It is commonly observed that parents feel embarrassed to discuss freely with their adolescent children about sexuality and reproduction. The result of this parental inhibition is that the children go astray sometimes.
By taking one example of a local plant and animal, how would you help these parents to overcome such inhibitions about reproduction and sexuality?
Chapter: [0.01] Reproduction in Organisms
Answer the following question.
When a seed of orange is squeezed, many embryos, instead of one are observed. Explain how it is possible.
Chapter: [0.01] Sexual Reproduction in Flowering Plants
Answer the following question.
Are these embryos genetically similar or different? Comment.
Chapter: [0.01] Sexual Reproduction in Flowering Plants
Explain the menstruation phases in the menstrual cycle of a human female.
Chapter: [0.02] Human Reproduction
Explain the follicular phases in the menstrual cycle of a human female.
Chapter:
Explain the luteal phases in the menstrual cycle of a human female.
Chapter:
'A proper understanding of the menstrual cycle can help immensely in family planning.' Do you agree with the statement? Provide reasons for your answer.
Chapter: [0.02] Human Reproduction
Answer the following question.
Compare, giving reasons, the J-shaped and S-shaped models of population growth of a species.
Chapter: [0.11] Organisms and Populations
Answer the following question.
Explain ‘fitness of a species’’ as mentioned by Darwin.
Chapter: [0.06] Evolution
Answer the following question.
What is an ecological pyramid? Compare the pyramids of energy, biomass, and numbers.
Chapter: [0.12] Ecosystem
Answer the following question.
Write any two limitations of ecological pyramids.
Chapter: [0.12] Ecosystem
Answer the following question.
Describe the structure and function of a t-RNA molecule. Why is it referred to as an adapter molecule?
Chapter: [0.05] Molecular Basis of Inheritance
Answer the following question.
Explain the process of splicing of hn-RNA in a eukaryotic cell.
Chapter: [0.05] Molecular Basis of Inheritance
Answer the following question.
Write the different components of a lac-operon in E. coli. Explain its expression while in an ’open’ state.
Chapter: [0.12] Ecosystem
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