
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.
Select the correct answer using the codes given below.


Important Questions on Previous Year's Questions

The efforts to detect the existence of Higgs Boson particles 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 enable us in the near future to develop the technology of 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.
Select the correct answer using the codes given below:

Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to:
. Resist drought and increase the porous area.
. Tolerate extremes of pH.
. Resist disease infestation.
Select the correct answer using the codes given below.

In India, the overall index of Industrial Production, the indices of eight core industries have a combined weight of 37-90%. Which of the following are among those eight core industries?
1. Cement
2. Fertilizers
3. Natural gas
4. Refinery products
5. Textiles
Select the correct answer using the codes given below:

The government of India encourages the cultivation of ‘sea buckthorn’. What is the importance of this plant?
. It helps in controlling soil erosion and in preventing desertification.
. It is a rich source of biodiesel.
. It has nutritional value and is well-adapted to live in cold areas of high altitudes.
. Its timber is of great commercial value.
Which of the statement(s) given above is /are correct?

Which of the following is the chief characteristic of ‘mixed farming’?

Consider the following crops of India,
1. Cowpea 2. Green gram 3. Pigeon pea.
Which of the above is/are used as pulse, fodder and green manure?

Consider the following factors.
. Rotation of the Earth
. Air pressure and wind
. Density of ocean water
. Revolution of the Earth
Which of the above factors influence the ocean currents?
