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XII BOARDS PREVIOUS YEAR-XII BOARDS-Set I
- Is sweet potato analogous or homologous to potato tuber ? Give reasons...
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- Why is Taq polymerase preferred in PCR ? Mention the source of this en...
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- Our farmers still use DDt. How is the affecting the local bird populat...
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- How does the HIV breakdown the immune system of the AIDS patient ?
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- The above diagrams shows human male reproductive system (one side only...
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- How did industrialization play a role in Natural Selection of light a...
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- What do you infer from the resemblance between flying squirrel and fly...
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- A patient is down with Amoebiasis. List the symptoms that confirm this...
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- (a) Differentiate between a template strand and coding strand of DNA. ...
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- Explain succession of plants in xerophytic habitat until it reaches cl...
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- A sugarcane has been affected by virus. How can a virus free cane be d...
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- Why is DNA a better genetic meterial when compared to RNA ?
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- How does a detritivore differ from a decomposer ? Explain with an exam...
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- Explain the events in a normal woman during her menstrual cycle on the...
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- A youth in his twenties met with an accident and succumbed to the inju...
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- (a) Dihybrid cross between two garden pea plant one homozygous tall wi...
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- Explain the application of biotechnology in producing Bt cotton.
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- Unless the vector and source DNA are cut, fragments separated and join...
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- Mention the site of fertilization of a human ovum. List the events tha...
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- (a) Draw a diagram of a fertilized embryo sac of a dicot flower. Label...
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