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XII BOARDS PREVIOUS YEAR-XII BOARDS-Section B
- 'Artificial insemination helps overcome several problems of normal mat...
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- Which type of population interaction is found between clown fish and s...
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- Write the relationship between productivity, gross primary productivit...
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- Justify the need for signing of 'Montreal Protocol' by the participati...
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- Write the effective remedy found by Ahmed Khan of Bengaluru for the ef...
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- In angiosperms, zygote is diploid while primary endosperm cell is trip...
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- A cross between a red flower bearing plant and a white flower bearing ...
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- List the two main prospositions of Opain and Haldane.
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- Write the events that take place when a vaccine for any disease is int...
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- Name the bacterium responsible for the large holes seen in "Swiss Chee...
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- Name the source of the DNA polymerase used in PCR technique. Mention w...
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- Write any four ways used to introduce a desired DNA segment into a bac...
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- Why is pro insulin so called ? How is insulin different form it?
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- Where would you expect more species biodiversity- in tropics or in pol...
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- "It is possible that a species may occupy more than one trophic level ...
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- Why are human females rarely haemophilic? Explain. How do haemophilic ...
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- In a maternity clinic, for some reasons the authorities are not able t...
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- Explain the increases in the numbers of melanic(dark winged) moths in ...
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- Describes how biogas is generated from activated sludge. List the comp...
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- Name the pest that destroys the cotton bolls. Explain the role of baci...
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