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HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions for Biology

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Biology
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What are the decisive factors for population density?

[13] Organisms and Populations
Chapter: [13] Organisms and Populations
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Human proteins expressed in cattle milk.

[11] Enhancement of Food Production
Chapter: [11] Enhancement of Food Production
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In a mature, functional mRNA of eukaryotes______.

[4] Molecular Basis of Inheritance
Chapter: [4] Molecular Basis of Inheritance
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Match the following:

Column A Column B
(i) Organism (a) Large unit with specific climatic zone
(ii) Population (b) Different species in particular area
(iii) Community (c) Same species in a geographical area
(iv) Biome (d) Basic unit of ecological hierarchy
[13] Organisms and Populations
Chapter: [13] Organisms and Populations
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Define the Transfection.

[4] Molecular Basis of Inheritance
Chapter: [4] Molecular Basis of Inheritance
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Define Animal Husbandry.

[11] Enhancement of Food Production
Chapter: [11] Enhancement of Food Production
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What are the different types of chromosomal aberrations?

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
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Define the term Ventilator.

[8] Respiration and Circulation
Chapter: [8] Respiration and Circulation
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Give a reason All animals are called consumers.

[11] Enhancement of Food Production
Chapter: [11] Enhancement of Food Production
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What is lac?

[11] Enhancement of Food Production
Chapter: [11] Enhancement of Food Production
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Identify the appropriate term for the number of births under ideal conditions:

[13] Organisms and Populations
Chapter: [13] Organisms and Populations
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Explain the term Emigration.

[13] Organisms and Populations
Chapter: [13] Organisms and Populations
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Which day is observed as ‘World Environment Day’?

[13] Organisms and Populations
Chapter: [13] Organisms and Populations
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How CO2 makes idlies puffy?

[4] Molecular Basis of Inheritance
Chapter: [4] Molecular Basis of Inheritance
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Give any ‘two’ factors responsible for genetic variation.

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
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During .............. typs of interaction, both organisms are benefited

  1. mutualism
  2. competition
  3. commensalism
  4. parasitism
[13] Organisms and Populations
Chapter: [13] Organisms and Populations
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______ enzymes are used as biological scissors in r-DNA technology.

[4] Molecular Basis of Inheritance
Chapter: [4] Molecular Basis of Inheritance
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What is the correct sequence of the stages in bacteriophage lytic cycle?

(A) Attachment, Penetration, Lysis, Multiplication

(B) Attachment, Penetration, Multiplication, Lysis

(C) Lysis, Penetration, Multiplication, Attachment

(D) Attachment, Lysis, Multiplication, Penetration

[4] Molecular Basis of Inheritance
Chapter: [4] Molecular Basis of Inheritance
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Give the role of VAM related to soil fertility.

[13] Organisms and Populations
Chapter: [13] Organisms and Populations
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Explain the semi-conservative replication of eukaryotic DNA.

[4] Molecular Basis of Inheritance
Chapter: [4] Molecular Basis of Inheritance
Concept: undefined >> undefined
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