ISC (Commerce)
ISC (Arts)
ISC (Science)
Academic Year: 2016-2017
Date & Time: 24th March 2017, 2:00 pm
Duration: 3h
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- Attempt all questions in part 1.
- Attempt six questions in Part 2.
- Choosing two questions from each of the three sections A,B and C.
Answer the following question:
Why do Green plants start evolving CO2 instead of O2, at high temperatures?
Chapter: [0.052000000000000005] Ecosystem
Answer the following question:
Define Apomixis.
Chapter: [0.012] Sexual Reproduction in Flowering Plants
Answer the following question:
What is a Recon?
Chapter: [0.022000000000000002] Molecular Basis of Inheritance
Answer the following question:
Why are the spores of Bacillus thuringiensis used as bioinsecticide?
Chapter: [0.033] Microbes in Human Welfare
Initiation codon of protein synthesis in Eukaryotes is ______.
GUA
GGA
CCA
AUG
Chapter: [0.022000000000000002] Molecular Basis of Inheritance
Choose the correct option of the following question:
Type of Interaction where an individual sacrifices its own welfare (life) for the benefit of another animal of its own species is:
Altruism
Scavenging
Protocooperation
Commensalism
Chapter: [0.012] Sexual Reproduction in Flowering Plants
Choose the correct option of the following question:
Wings of Insect and Birds are examples of :
Analogous
Homologous
Vestigial
Atavism
Chapter: [0.023] Evolution
Choose the correct option of the following question:
The pressure of the cell contents on the cell wall is known as:
Wall pressure
Osmotic pressure
Turgor pressure
Diffusion pressure
Chapter: [0.032] Strategies for Enhancement in Food Production
Give a scientific term for the following:
An act of expelling the full-term foetus from mother’s uterus at the end of gestation.
Chapter: [0.013000000000000001] Human Reproduction
Give a scientific term for the following:
Entry of pollen tube into an ovule through integuments.
Chapter: [0.012] Sexual Reproduction in Flowering Plants
Give a scientific term for the following:
An alternative form of the single gene which influences the same character and produces different expressions in different individuals a species.
Chapter: [0.021] Principles of Inheritance and Variation
Give a scientific term for the following:
The study of human population covering all aspects and parameters.
Chapter: [0.013999999999999999] Reproductive Health
Expand the following abbreviation MTP.
Chapter: [0.013999999999999999] Reproductive Health
Expand the following abbreviation IW.
Chapter: [0.012] Sexual Reproduction in Flowering Plants
Expand the following abbreviation HIV.
Chapter: [0.013999999999999999] Reproductive Health [0.031] Human Health and Diseases
Expand the following abbreviation DPD.
Chapter: [0.033] Microbes in Human Welfare
Name the scientists who have contributed to the following:
Discovered the fossil of Cro-Magnon man.
Chapter: [0.023] Evolution
Name the scientists who have contributed to the following:
Classified active and passive absorption of water by roots.
Chapter: [0.023] Evolution
Name the scientists who have contributed to the following:
Reported Haemophilia.
Chapter: [0.023] Evolution
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Name the scientists who have contributed to the following:
Discovered double fertilization.
Chapter: [0.012] Sexual Reproduction in Flowering Plants
Differentiate between Apes and Man with respect to the following characteristic: Posture.
Chapter: [0.023] Evolution
Differentiate between Apes and Man with respect to the following characteristic: Brow ridges.
Chapter: [0.023] Evolution
Differentiate between Apes and Man with respect to the following characteristic: Cranial capacity.
Chapter: [0.023] Evolution
Explain any three molecular (genetic) evidences in favour of organic evolution.
Chapter: [0.023] Evolution
List any three drawbacks of Darwinism.
Chapter: [0.023] Evolution
State Hardy-Weinberg’s principle.
Chapter: [0.023] Evolution
Differentiate between Directional natural selection and Disruptive natural selection.
Chapter: [0.023] Evolution
Give four anatomical differences between a dicot leaf and monocot leaf.
Chapter: [0.012] Sexual Reproduction in Flowering Plants
Briefly describe the secretory phase of the menstrual cycle.
Chapter: [0.013000000000000001] Human Reproduction
Define: Menarche
Chapter: [0.013000000000000001] Human Reproduction
Define: Actinomorphic symmetry
Chapter: [0.012] Sexual Reproduction in Flowering Plants
Give a graphic representation of the Hatch Slack or C4 cycle.
Chapter: [0.052000000000000005] Ecosystem
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Give two significant difference between:
Transpiration and Guttation
Chapter: [0.052000000000000005] Ecosystem
Give two significant differences between:
Chlorophyll ‘a’ and Chlorophyll b ‘
Chapter: [0.052000000000000005] Ecosystem
Define the Amniocentesis.
Chapter: [0.013999999999999999] Reproductive Health [0.013999999999999999] Reproductive Health
Define the Polyembryony.
Chapter: [0.012] Sexual Reproduction in Flowering Plants
Describe K+ transport stomatal mechanism.
Chapter: [0.022000000000000002] Molecular Basis of Inheritance
Draw a neat labelled diagram of L.S. of anatropous ovule.
Chapter: [0.012] Sexual Reproduction in Flowering Plants
Differentiate between the following :
Spermatogenesis and oogenesis
Chapter: [0.013999999999999999] Reproductive Health [0.013999999999999999] Reproductive Health
Differentiate between the following :
Apocarpous ovary and syncarpous ovary
Chapter: [0.013000000000000001] Human Reproduction
Explain Pleiotropy with reference to phenylketonuria.
Chapter: [0.021] Principles of Inheritance and Variation
Explain the mechanism of transcription in a prokaryotic cell.
Chapter: [0.022000000000000002] Molecular Basis of Inheritance
Explain Rh factor incompatibility during pregnancy.
Chapter: [0.013000000000000001] Human Reproduction
Discuss the various In-situ and Ex-situ strategies for conservation of biodiversity.
Chapter: [0.054000000000000006] Environmental Issues
List any four applications of tissue culture.
Chapter: [0.032] Strategies for Enhancement in Food Production
Mention the causative agent and the preventive measures for the following: Gonorrhoea
Chapter: [0.013999999999999999] Reproductive Health [0.031] Human Health and Diseases
Mention the causative agent and the preventive measures for the following: Pneumonia.
Chapter: [0.031] Human Health and Diseases
Name the components of lac operon and discuss their role.
Chapter: [0.022000000000000002] Molecular Basis of Inheritance
Give the importance/significance of transgenic animals.
Chapter:
Give one significant difference between:
Electroporation and Gene Gun.
Chapter: [0.040999999999999995] Biotechnology - Principles and Processes
Give one significant difference between :
ECG and EEG
Chapter: [0.032] Strategies for Enhancement in Food Production
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CISCE previous year question papers Class 12 Biology (Theory) with solutions 2016 - 2017
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