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HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions for Biology

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Biology
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Long answer question.

By taking industrial melanism as one example. Explain the concept of natural selection.

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
Concept: undefined >> undefined

Long answer question.

Describe the different types of reproductive isolations.

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
Concept: undefined >> undefined

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Long answer question.

Explain the different factors responsible for genetic variations.

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
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Give the full form of IAA.

[7] Plant Growth and Mineral Nutrition
Chapter: [7] Plant Growth and Mineral Nutrition
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What is Isolation?

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
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What is Genetic variations?

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
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First biopatent to genetically engineered bacterium ______.

[12] Biotechnology
Chapter: [12] Biotechnology
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What is Biopiracy? 

[12] Biotechnology
Chapter: [12] Biotechnology
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Which are different adverse effect of biotechnology on human health and environment?

[12] Biotechnology
Chapter: [12] Biotechnology
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Explain biopatent and Biopiracy with different examples?

[12] Biotechnology
Chapter: [12] Biotechnology
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Define intracellular transport and extracellular transport.

[8] Respiration and Circulation
Chapter: [8] Respiration and Circulation
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The proportion of an allele in the gene pool to the total number of alleles at a given locus is called _______.

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
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Any random fluctuation in allele frequency, occurring in the natural population by pure chance is called __________.

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
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Define the term ‘Mendelian population’.

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
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What is hybrid sterility?

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
Concept: undefined >> undefined

Explain Geographical Isolation

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
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Write down the three main concepts of the modern synthetic theory.

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
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Industrial melanism is one of the best example for ______.

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
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Write a short note on the greenhouse effect.

[15] Biodiversity, Conservation and Environmental Issues
Chapter: [15] Biodiversity, Conservation and Environmental Issues
Concept: undefined >> undefined

Which event is represented by the above diagram, related to chromosomal aberrations?

[5] Origin and Evolution of Life
Chapter: [5] Origin and Evolution of Life
Concept: undefined >> undefined
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