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Tamil Nadu Board of Secondary EducationHSC Science कक्षा १२

HSC Science कक्षा १२ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Botany

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विषयों
मुख्य विषय
अध्याय
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Botany
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Plants having similar genotypes produced by plant breeding are called

[9] Plant Breeding
Chapter: [9] Plant Breeding
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Importing better varieties and plants from outside and acclimatizing them to the local environment is called

[9] Plant Breeding
Chapter: [9] Plant Breeding
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Crosses between the plants of the same variety are called

[9] Plant Breeding
Chapter: [9] Plant Breeding
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Which one of the following crop varieties correct matches with its resistance to disease?

Variety Resistance to disease
a) Pusa Komal Bacterial blight
b) Pusa Sadabahar White rust
c) Pusa Shubhra Chilli mosaic virus
d) Brassica Pusa swarnim
[9] Plant Breeding
Chapter: [9] Plant Breeding
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Explain the best-suited type followed by plant breeders at present?

[9] Plant Breeding
Chapter: [9] Plant Breeding
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Discuss which wood is better for making furniture.

[10] Economically Useful Plants and Entrepreneurial Botany
Chapter: [10] Economically Useful Plants and Entrepreneurial Botany
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Match list I with list II

List I List II
A. A pair of chromosomes extra with diploid i) monosomy
B. One chromosome extra to the diploid ii) tetrasomy
C. One chromosome was lost from diploid iii) trisomy
D. Two individual chromosomes lose from diploid iv) double monosomy
[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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Match list I with list II.

  List I   List II
A. A pair of chromosomes extra with diploid i) monosomy
B. One chromosome extra to the diploid ii) tetrasomy
C. One chromosome loses from diploid iii) trisomy
D. Two individual chromosomes lose from diploid iv) double monosomy
[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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Match list I with list II

  List I   List II
A. A pair of chromosomes extra with diploid i) monosomy
B. One chromosome extra to the diploid ii) tetrasomy
C. One chromosome loses from diploid iii) trisomy
D. Two individual chromosomes lose from diploid iv) double monosomy
[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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The point mutation sequence for transition, transition, transversion, and transversion in DNA are

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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DNA dependent RNA polymerase catalyzes transcription on one strand of the DNA which is called the

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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Initiation codon is

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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DNA element with ability to change position is called

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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During DNA replication Okazaki fragments are used to elongate

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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Write the steps involved in the molecular mechanism of DNA recombination with a diagram.

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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What is DNA repair?

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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EcoRI cleaves DNA at

[4] Principles and Processes of Biotechnology
Chapter: [4] Principles and Processes of Biotechnology
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An analysis of chromosomal DNA using the southern hybridisation technique does not use

[4] Principles and Processes of Biotechnology
Chapter: [4] Principles and Processes of Biotechnology
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An antibiotic gene in a vector usually helps in the selection of

[4] Principles and Processes of Biotechnology
Chapter: [4] Principles and Processes of Biotechnology
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Is their any possibilities to transfer a suitable desirable gene to the host plant without a vector? Justify your answer.

[4] Principles and Processes of Biotechnology
Chapter: [4] Principles and Processes of Biotechnology
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