Lichens, which are capable of initiating ecological succession even on a bare rock, are actually a symbiotic association of
Lichens, which are capable of initiating ecological succession even on a bare rock, are actually a symbiotic association of
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Which of the following adds/add carbon dioxide to the carbon cycle on the planet Earth?
1. Volcanic action
2. Respiration
3. Photosynthesis
4. Decay of organic matter
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Consider the following:
1. Bats
2. Bears
3. Rodents
The phenomenon of hibernation can be observed in which of the above kinds of animals?
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With reference to technology for solar power production, consider the following statements:
1. Photovoltaics is a technology that generates electricity by direct conversion of light into electricity, while 'Solar Thermal' is a technology that utilises the Sun's rays to generate heat which is further used in the electricity generation process.
2. Photovoltaics-generates Alternating Current(AC), while Solar Thermal generates Direct Current(DC).
3. India has a manufacturing base for Solar Thermal technology, but not for photovoltaics.
Which of the statements given above is/are correct?
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Which one of the following is the correct sequence of a food chain?
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Among the following organisms, which one does not belong to the class of the other three?
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Consider the following statements:
1. Maize can be used for the production of starch.
2. Oil extracted from maize can be a feedstock for biodiesel.
3. Alcoholic beverages can be produced by using maize.
Which of the statements given above is/are correct?
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Consider the following techniques/phenomena:
1. Budding and grafting in fruit plants
2. Cytoplasmic male sterility
3. Gene silencing
Which of the above is/are used to create transgenic crops?
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Which of the following is/are the example/examples of chemical change?
1. Crystallisation of sodium chloride
2. Melting of ice
3. Souring of milk
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Which of the following statements is/are correct regarding vegetative propagation of plants?
1. Vegetative propagation produces a clonal population.
2. Vegetative propagation helps in eliminating the virus.
3. Vegetative propagation can be practised most of the year.
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