ISC (Commerce)
ISC (Arts)
ISC (Science)
Academic Year: 2013-2014
Date: मार्च 2014
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Question 1 is Compulsory
Attempt Any Two Question From Question 2 to Question 4
Attempt Any Two Question From Question 5 to Question 7
Attempt Any Two Question From Question 8 to Question 10
Mention one significant difference between Parenchyma and Sclerenchyma.
Chapter: [11] Strategies for Enhancement in Food Production
Mention one significant difference between Epistasis and dominance
Chapter:
Mention one significant difference between Hormones of ovulatory phase and hormones of luteal phase
Chapter: [3] Human Reproduction
Mention one significant difference between Symplastic movement and apoplastic movement
Chapter: [11] Strategies for Enhancement in Food Production
Mention one significant difference between Phenotype and Genotype
Chapter:
Give reasons for the following:
Testes descend into the scrotum before birth.
Chapter: [3] Human Reproduction
Give reasons for the following:
Secondary growth does not occur in monocot stems.
Chapter:
Give reasons for the following:
Nitrogenous fertilizers are not applied in fields where leguminous crops grow.
Chapter: [12] Microbes in Human Welfare
Give reasons for the following:
The genetic code is 'universal'
Chapter:
Give reasons for the following:
At higher temperatures, green plants start evolving CO2 instead of O2.
Chapter:
In the following questions/statements has four suggested answers. Rewrite the correct answer
Typhoid is classified as a:
(A) Viral disease
(B) Genetic disorder
(C) Bacterial disease
(D) Protozoan disease
Chapter:
In the following questions/statements has four suggested answers. Rewrite the correct answer
Bt cotton is resistant to:
(A) Insects
(B) Herbicides
(C) Salt
(D) Drought
Chapter: [14] Biotechnology and Its Applications
In the following questions/statements has four suggested answers. Rewrite the correct answer
Roots and shoots lengthen through the activity of:
(A) Apical meristem
(B) Vascular Cambium
(C) Lateral meristem
(D) Cork Cambium
Chapter: [11] Strategies for Enhancement in Food Production
An antiviral protein released from infected and dying cells is ______.
antigen
antibody
antiserum
interferon
Chapter: [10] Human Health and Diseases
In the following questions/statements has four suggested answers. Rewrite the correct answer
Opening and closing of stomata is due to:
(A) Ca2+
(B) Na+
(C) K+
(D) Cl–
Chapter: [11] Strategies for Enhancement in Food Production
State the best-known contribution of Alec Jeffrey.
Chapter:
State the best-known contribution of P.K. Sethi
Chapter: [14] Biotechnology and Its Applications
State the best-known contribution of Hugo de Vries
Chapter:
Expand the following: SCID
Chapter: [10] Human Health and Diseases
Expand the following:
ZIFT
Chapter: [4] Reproductive Health
Describe the Miller and Urey experiment on the origin of life
Chapter:
Name and define the three types of natural selection.
Chapter: [8] Evidences and Theories of Biological Evolution
State Hardy Weinberg's principle.
Chapter: [8] Evidences and Theories of Biological Evolution
Mention any three characteristics of Neanderthal man that lived in near east and central Asia.
Chapter:
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How do homologous organs help in providing evidence for organic evolution?
Chapter:
Describe the different types of vascular bundles.
Chapter:
Give three anatomical differences between a monocot root and a dicot root
Chapter: [11] Strategies for Enhancement in Food Production
Explain the effect of light and temperature on photosynthesis.
Chapter:
Explain the transpiration pull theory for an ascent of sap
Chapter: [11] Strategies for Enhancement in Food Production
Briefly describe the process of spermatogenesis.
Chapter: [3] Human Reproduction
Define Parthenocarpy
Chapter: [2] Sexual Reproduction in Flowering Plants
Why are xylem and phloem classified as complex tissues?
Chapter: [11] Strategies for Enhancement in Food Production
Describe the structure of phloem.
Chapter: [11] Strategies for Enhancement in Food Production
Describe the ultra-structure of a chloroplast.
Chapter: [11] Strategies for Enhancement in Food Production
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Describe the experiment performed by Griffith. What conclusions did he infer from his observations?
Chapter:
What is artificial insemination? Mention two ways in which it is useful in the breeding of dairy animals
Chapter:
What is single cell protein?
Chapter: [11] Strategies for Enhancement in Food Production
How did Hershey and Chase prove that DNA is the genetic material?
Chapter:
Explain the role of stem cells in medical treatment.
Chapter: [14] Biotechnology and Its Applications
Write short notes on Artificial measures to control population
Chapter:
What complications will arise if the blood of an Rh-positive person is transfused to an Rh-negative person and vice versa?
Chapter:
State any three goals of the human genome project.
Chapter: [6] Molecular Basis of Inheritance
State any three goals of the human genome project.
Chapter: [6] Molecular Basis of Inheritance
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CISCE previous year question papers Class 12 Biology (Theory) with solutions 2013 - 2014
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