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XII BOARDS PREVIOUS YEAR-XII BOARDS-SECTION-D
- (a) Give a schematic representation showing the events of spermatogene...
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- (a) State the law of independent assortment. (b) Using Punnett Squar...
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- How did Alfred Hershey and Martha Chase arrive at the conclusion that ...
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- (a) Why are herbivores considered similar to predators in the ecologic...
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- (a) Trace the succession of plants on a dry bare rock. (b) How does ...
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- (a ) Draw a labelled L.S. view of an albuminous 'seed'· (b) How are ...
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- (a) Write the fate of egg cell and polar nuclei after fertilization.
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- How does the process of natural selection affect Hardy-Weinberg equili...
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- (a) Explain Mendel's law of independent assortment by taking a suitabl...
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- (a) Explain one application of each one of the following : (A) Amnio...
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- Differentiate between incomplete dominance and co-dominaces. Substanti...
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- (a) What is "population" according to you as a biology student ? (b)...
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- A large number married couples in the world over are childless. It is ...
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- Waste Disposal and Waste Management poses a major problem in present t...
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- (a) Indiscriminate human activities such as alien species invasion, fr...
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- (a) Explain the development of female gametophyte from a megaspore mot...
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- (a) Draw a diagrammatic sectional view of a seminiferous tubule (enlar...
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- (a) How are polygenic inheritance and multiple allelism different ? Ex...
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- State the hypothesis proposed by Oparin and Haldane. How was it experi...
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- Explain the carbon cycle with the help of a simplified model.
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