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Tamil Nadu Board of Secondary EducationHSC Science Class 12

HSC Science Class 12 - Tamil Nadu Board of Secondary Education Question Bank Solutions

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What are the different types of hybridization?

[1.09] Plant Breeding
Chapter: [1.09] Plant Breeding
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Write a note on heterosis.

[1.09] Plant Breeding
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Find out the correctly matched pair.

[1.1] Economically Useful Plants and Entrepreneurial Botany
Chapter: [1.1] Economically Useful Plants and Entrepreneurial Botany
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A person got irritation while applying chemical dye. What would be your suggestion for an alternative?

[1.1] Economically Useful Plants and Entrepreneurial Botany
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Match the following:

Column A Column B
1) Totipotency A) Reversion of mature cells into meristerm
2) Dedifferentiation B) Biochemical and structural changes of cells
3) Explant C) Properties of living cells develop into the entire plant
4) Differentiation D) Selected plant tissue transferred to the culture medium
[1.05] Plant Tissue Culture
Chapter: [1.05] Plant Tissue Culture
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With respect to EichhorniaWith respect to Eichhornia

Statement A: It drains off oxygen from water and is seen growing in standing water.

Statement B: It is an indigenous species of our country

[1.08] Environmental Issues
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Suggest a solution to the water crisis and explain its advantages.

[1.08] Environmental Issues
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List out the new breeding techniques involved in developing new traits in plant breeding.

[1.09] Plant Breeding
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People’s movement for the protection of the environment in Sirsi of Karnataka is

[1.08] Environmental Issues
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How do sacred groves help in the conservation of biodiversity?

[1.08] Environmental Issues
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Differentiate bio-medicines and botanical medicines.

[1.1] Economically Useful Plants and Entrepreneurial Botany
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What is TSM? How does it classify and what does it focus on?

[1.1] Economically Useful Plants and Entrepreneurial Botany
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Which TSM is widely practiced and culturally accepted in Tamil Nadu? - explain.

[1.1] Economically Useful Plants and Entrepreneurial Botany
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The active principle trans-tetra hydro canabial is present in

[1.1] Economically Useful Plants and Entrepreneurial Botany
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Name the humors that are responsible for the health of human beings.

[1.1] Economically Useful Plants and Entrepreneurial Botany
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Give an account of the active principle and medicinal values of any two plants you have studied.

[1.1] Economically Useful Plants and Entrepreneurial Botany
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Observe the following statements and pick out the right option from the following:

Statement I: The drug sources of Siddha include plants, animal parts, ores, and minerals.

Statement II: Minerals are used for preparing drugs with a long shelf-life.

[1.1] Economically Useful Plants and Entrepreneurial Botany
Chapter: [1.1] Economically Useful Plants and Entrepreneurial Botany
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Give definitions for organic farming?

[1.1] Economically Useful Plants and Entrepreneurial Botany
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Write the origin and area of cultivation of green gram and red gram.

[1.1] Economically Useful Plants and Entrepreneurial Botany
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Enumerate the uses of turmeric.

[1.1] Economically Useful Plants and Entrepreneurial Botany
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