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XII BOARDS PREVIOUS YEAR-XII BOARDS-SECTION-C
- (a) Name the organic material exine of the pollen grain is made up of....
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- Differentiate between divergent and convergent evolution. Give one exa...
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- Name two hormones that are constituents of contraceptive pills. Why do...
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- Are humming birds and fish regulators or conformers ? Give reasons in ...
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- (a) What is green revolution ? Mention the steps that led to it (b) ...
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- Expand 'ELISA'. Why is this method preferred over conventional methods...
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- State the objective with which a dairy farm is set up .Describe the es...
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- Write in what context did Darwin use the terms ' fitness', survival an...
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- Name the specific enzyme responsible for nucleotide polymerisation in ...
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- Write the causative agent of filariasis in human. Mention its mode of ...
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- (a) Name a terminal methode to prevent pregnancy in humans. (b) Desc...
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- (a) Do all pollen grains remain viable for the same length of time ? S...
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- GM plants are useful in many ways. How would you convince farmers to g...
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- Name and explain the technique that helps in the separation of DNA fra...
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- When Morgan conduced dihybrid cross on Drosophila like Mendel did with...
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- Name the male accenssory glands in human and write their functions.
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- Describe the onter - relationship between productivity , gross primary...
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- Explain the process of pollination in Vallisneria .How is it different...
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- What is disturbence in Hardy- Weinberg genetic equilibrium indicaitive...
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- Different animals respond to changes in their surroundings in differen...
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