हिंदी
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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मुख्य विषय
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Botany
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Parthenocarpic fruits lack

[1] Asexual and Sexual Reproduction in Plants
Chapter: [1] Asexual and Sexual Reproduction in Plants
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Mention the contribution of Hofmeister towards Embryology.

[1] Asexual and Sexual Reproduction in Plants
Chapter: [1] Asexual and Sexual Reproduction in Plants
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Highlight the milestones from the history of plant embryology.

[1] Asexual and Sexual Reproduction in Plants
Chapter: [1] Asexual and Sexual Reproduction in Plants
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‘The endosperm of angiosperm is different from gymnosperm’. Do you agree? Justify your answer.

[1] Asexual and Sexual Reproduction in Plants
Chapter: [1] Asexual and Sexual Reproduction in Plants
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Define the term Diplospory.

[1] Asexual and Sexual Reproduction in Plants
Chapter: [1] Asexual and Sexual Reproduction in Plants
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Why does the zygote divides only after the division of Primary endosperm cell?

[1] Asexual and Sexual Reproduction in Plants
Chapter: [1] Asexual and Sexual Reproduction in Plants
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Give examples for the Helobial endosperm.

[1] Asexual and Sexual Reproduction in Plants
Chapter: [1] Asexual and Sexual Reproduction in Plants
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‘Endothecium is associated with dehiscence of anther’ Justify the statement.

[1] Asexual and Sexual Reproduction in Plants
Chapter: [1] Asexual and Sexual Reproduction in Plants
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What is endosperm? Explain the types.

[1] Asexual and Sexual Reproduction in Plants
Chapter: [1] Asexual and Sexual Reproduction in Plants
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Differentiate the structure of Dicot and Monocot seed.

[1] Asexual and Sexual Reproduction in Plants
Chapter: [1] Asexual and Sexual Reproduction in Plants
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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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Assertion (A): Gamma rays are generally used to induce mutation in wheat varieties.

Reason (R): Because they carry lower energy to non-ionize electrons from atom

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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What is the difference between missense and nonsense mutation?

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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Draw the diagram of different types of aneuploidy.

[3] Chromosomal Basis of Inheritance
Chapter: [3] Chromosomal Basis of Inheritance
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The time duration for sterilization process by using autoclave is ______ minutes and the temperature is _______

[5] Plant Tissue Culture
Chapter: [5] Plant Tissue Culture
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Cryopreservation means it is a process to preserve plant cells, tissues, or organs

[5] Plant Tissue Culture
Chapter: [5] Plant Tissue Culture
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Give an account on Cryopreservation.

[5] Plant Tissue Culture
Chapter: [5] Plant Tissue Culture
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What do you know about Germplasm conservation? Describe it.

[5] Plant Tissue Culture
Chapter: [5] Plant Tissue Culture
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Distinguish between endangered, vulnerable, and rare species.

[8] Environmental Issues
Chapter: [8] Environmental Issues
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While studying the history of the domestication of various cultivated plants _______ were recognized earlier.

[9] Plant Breeding
Chapter: [9] Plant Breeding
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