Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to
1. resist drought and increase absorptive area
2. tolerate extremes of PH
3. Resist disease infestation

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The efforts to detect the existence of Higgs boson particle have become frequent news in the recent past. What is /are the importance/importances of discovering this particle?

1. It will enable us to understand as to why elementary particles have mass.
2. It will enables us in the near future to develope the technology to transferring matter from one point to another without traversing the physical space between them.
3. It will enable us to create better fuels for nuclear fission.
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The known forces of nature can be divided into four classes, viz, gravity electromagnetism, weak nuclear force and strong nuclear force. with reference to them, which one of the following statements is not correct?

Which of the following leaf modifications occurs/occur in desert areas to inhibit water loss?

1. Hard and waxy leaves 
2. Tiny leaves or no leaves 
3. Thorns instead of leaves

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Which of the following statements is / are correct?
1. Viruses lack enzymes necessary for the generation of energy.
2. Viruses can be cultured in any synthetic medium.
3. Viruses are transmitted from one organism to another by biological vectors only.
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Many transplanted seedlings do not grow because