XII BOARDS PREVIOUS YEAR-XII BOARDS-SECTION-C
- (i ) Write the characteristics features of anther, pollen and stigma o...
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- (i) Why are grasshopper and Drosophila said to show male heterogamity ...
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- In a series of experiments with Streptococcus and mice F. Griffith con...
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- (a) How does the Hardy- Weinberg's expression (p^(2) + 2pq + q^(2) = 1...
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- Mention the name of the causal organism, symptoms and the mode of tran...
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- (i) Mention the property that enables the explants to regenerate into ...
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- Mention the product and its use produced by each of the microbes liste...
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- (i) Name the organism in which the vector shown in inserted to get the...
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- Name the insect pest that is killed by the products of cryIAc gene. Ex...
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- How do organisms like fungi, zooplanktons and bears overcome the tempo...
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- Explain the process of artificial hybridisation to get improved crop, ...
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- Explain the sex determination mechanism in humans. How is it different...
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- (a ) Trace the development ofmegaspore mother cell up to the formation...
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- (a) Draw a diagrammatic labelled sectional view of seminiferous tubule...
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- Explain the mechanism of sex determination in insects like Drosophila ...
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- (a) Mention any four strategies adopted by flowering plants to prevent...
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- Pollen banks are playing a very important role in promoting plant bree...
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- Draw a labelled diagram to show inter-relationship of four accessory d...
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- Compare in any three ways the chromosomal theory of inheritance as pro...
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- Explain the mechanism of DNA repication with the help of a replication...
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