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State the relation between gross and net primary productivity.

[12] Ecosystem
Chapter: [12] Ecosystem
Concept: undefined >> undefined

Why is the coding sequence of an enzyme β-galactosidase a preferred selectable marker in comparison to the ones named above?

[9] Biotechnology - Principles and Processes
Chapter: [9] Biotechnology - Principles and Processes
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Write the role of ‘restriction sites’ in the cloning vector pBR322.

[9] Biotechnology - Principles and Processes
Chapter: [9] Biotechnology - Principles and Processes
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What is ‘Ori’ ? State its importance during cloning of a vector.

[9] Biotechnology - Principles and Processes
Chapter: [9] Biotechnology - Principles and Processes
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Explain the importance of ‘Selectable marker’, with the help of a suitable example.

[9] Biotechnology - Principles and Processes
Chapter: [9] Biotechnology - Principles and Processes
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What is the primary productivity of an ecosystem and how is it expressed?

[12] Ecosystem
Chapter: [12] Ecosystem
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Explain what does the equation given below show :
NPP = GPP – R

[12] Ecosystem
Chapter: [12] Ecosystem
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How would you find out whether a given tall garden pea plant is homozygous or heterzygous? Substantiate your answer with the help fo Punnett squares.

[4] Principles of Inheritance and Variation
Chapter: [4] Principles of Inheritance and Variation
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Given below are the F2 – phenotypic ratios of two independently carried monohybrid crosses :
(i) 1 : 2 : 1
(ii) 3 : 1
Mention what does each ratio suggest.

[4] Principles of Inheritance and Variation
Chapter: [4] Principles of Inheritance and Variation
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Answer the following question.
What are ‘flocs’, formed during secondary treatment of sewage?

[8] Microbes in Human Welfare
Chapter: [8] Microbes in Human Welfare
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Answer the following question.
Write the basis on which Alfred Sturtevant explained gene mapping.

[4] Principles of Inheritance and Variation
Chapter: [4] Principles of Inheritance and Variation
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Answer the following question.
What are 'flocs', formed during secondary treatment of sewage?

[8] Microbes in Human Welfare
Chapter: [8] Microbes in Human Welfare
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Answer the following question.
β galactosidase enzyme is considered a better selectable marker. Justify the statement.

[9] Biotechnology - Principles and Processes
Chapter: [9] Biotechnology - Principles and Processes
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Answer the following question.
Expand ‘YAC’ and mention what it was used for.

[9] Biotechnology - Principles and Processes
Chapter: [9] Biotechnology - Principles and Processes
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Answer the following question.
Secondary treatment of the sewage is also called Biological treatment. Justify this statement and explain the process.

[8] Microbes in Human Welfare
Chapter: [8] Microbes in Human Welfare
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Answer the following question.
Describe the inter-relationship between productivity, gross primary productivity, and net productivity.

[12] Ecosystem
Chapter: [12] Ecosystem
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"Artificial insemination helps overcome several problems of normal mating in cattle". Do you agree? Support your answer with any three reasons.

[10] Biotechnology and Its Application
Chapter: [10] Biotechnology and Its Application
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Write the relationship between productivity, gross primary productivity, net primary productivity, and secondary productivity.

[12] Ecosystem
Chapter: [12] Ecosystem
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How does the β-galactosidase coding sequence act as a selectable marker? Why is it a preferred selectable marker to antibiotic resistance genes? Explain.

[9] Biotechnology - Principles and Processes
Chapter: [9] Biotechnology - Principles and Processes
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Name the tank to which the sewage water is passed after the preliminary treatment?

[8] Microbes in Human Welfare
Chapter: [8] Microbes in Human Welfare
Concept: undefined >> undefined
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CBSE Science (English Medium) कक्षा १२ Question Bank Solutions
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Biology
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Chemistry
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Computer Science (C++)
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Computer Science (Python)
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ English Core
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ English Elective - NCERT
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Entrepreneurship
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Geography
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Hindi (Core)
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Hindi (Elective)
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ History
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Informatics Practices
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Mathematics
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Physical Education
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Physics
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Political Science
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Psychology
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Sanskrit (Core)
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Sanskrit (Elective)
Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Sociology
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