ISC (Commerce)
ISC (Arts)
ISC (Science)
Academic Year: 2014-2015
Date: March 2015
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Answer all questions in Part I and six questions in Part II choosing two questions from each of the three sections A(Q2-Q4), B(Q5-Q7) . and C(Q-8-Q10)
Why is non-cyclic photo phosphorylation considered as a non-cyclic pathway?
Chapter:
What are introns?
Chapter: [6] Molecular Basis of Inheritance
Triple Fusion involves:
(i) Fusion of one male, gamete with female gamete
(ii) Fusion of tube nucleus with generative nvcleus
(iii) Fusion of two polar nuclei.
(iv) Fusion of second male gamete with two polar nuclei
Chapter:
An EEG represents spontaneous electrical activity of the:
(i) Kidney
(ii) Spinal cord
(iii) Heart
(iv) Brain
Chapter:
The genotype of a person withTumer's syndrome will be:
(i) 44+XXY
(ii) 44+XYY
(iii) 44+XO
(iv) 44+XXYY
Chapter: [5] Principles of Inheritance and Variation
Transcription is the transfer of genetic code from a DNA molecule to:
(i) RNA molecule
(ii) Second DNA molecule
(iii) Ribosomal sub unit·
(iv) Sequence of amino acids in a protein molecule
Chapter: [6] Molecular Basis of Inheritance
Scientific term for the first formed category of photosynthetic organisms.
Chapter:
Scientific term for the surgical removal of a section of fallopian tube.
Chapter:
Scientific term for an animal behaviour which benefits others but is of no advantage to itself.
Chapter:
Scientific term for the hydrostatic pressure developed inside the cell on the cell wall due to endosmosis.
Chapter: [14] Biotechnology and Its Applications
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Name the scientists who Discovered the fossil of Australopithecus
Chapter:
Name the scientists who Coined the term Diffusion Pressure Deficit
Chapter:
Give any three characters that have developed during human evolution.
Chapter:
Give any two distinctive features of Dryopithecus.
Chapter:
Explain the evolution of giraffe's neck according to Lamarck's theory of evolution.
Chapter:
Give two chromosomal similarities between man and apes.
Chapter:
Name any two temporary embryonic structures in vertebrates which provide evidence for evolution.
Chapter:
Persons suffering from sickle cell anaemia are at an advantage in Malaria infected areas. Explain.
Chapter:
What are analogous organs? Describe with one example from the plant kingdom.
Chapter:
With the help of diagrams, name and describe the different types of placentation seen in angiosperms.
Chapter:
Give four points of anatomical differences between a monocot stem and a dicot stem
Chapter: [14] Biotechnology and Its Applications
Define Racemose inflorescence
Chapter: [2] Sexual Reproduction in Flowering Plants
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Draw a diagram of the internal structure of the human ovary.
Chapter:
What are components of water potential? Explain
Chapter:
Definition and importance of Parturition
Chapter: [3] Human Reproduction
Give four adaptations in flowers pollinated by insects.
Chapter: [8] Evidences and Theories of Biological Evolution
Describe the mass flow hypothesis for translocation of organic solutes (food) in plants.
Chapter:
Write a brief note on the causes of infertility.
Chapter: [4] Reproductive Health
Briefly describe the technique employed in DNA fingerprinting.
Chapter:
Explain the mechanism of action of T-cells to antigens.
Chapter:
Explain how insulin can be produced using recombinant DNA technology.
Chapter: [14] Biotechnology and Its Applications
Name the causative organism and preventive measures for Swine flu
Chapter:
Name the causative organism and preventive measures for Typhoid
Chapter:
Name the causative organism and preventive measures for Filariasis
Chapter:
Name the causative organism and preventive measures for Syphilis
Chapter:
Differentiate between Cannabinoids and Barbiturates.
Chapter:
Differentiate between biotic potential and carrying capacity.
Chapter:
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CISCE previous year question papers Class 12 Biology (Theory) with solutions 2014 - 2015
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