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Write an account on natural selection.

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Write a brief note on germination of seed.

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What are the main sources of variations?

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Write down the types of variations.

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What do you mean by greenhouse effect?

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Describe the processes of spermatogenesis and oogenesis.

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Describe the Watson-Crick model of DNA.

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Write an account on tissue culture and cloning in plants.

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Write a note on competition.

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Why Mendel selected pea plant as his experimental tool?

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Who is Gregor Mendel? Why, he is famous for?

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What do you mean by dominant and recessive alleles?

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In biotechnology, what is meant by Genetically Modified Organism(GMO)? How is it obtained?

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Define biomass.

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What is genetic engineering? What are the objectives of it?

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What are the contributions of Theophrastus in botany?

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What is IPCC?

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What is Punnett square?

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What are genes? What is the relationship between genes and chromosomes?

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Define ecology?

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