MEDIUM
RRB Group D CBT
IMPORTANT
Earn 100

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.

50% studentsanswered this correctly

Important Questions on Previous Year's Questions

HARD
RRB Group D CBT
IMPORTANT
The known forces of nature can be divided into four classes: gravity, electromagnetism, weak nuclear force, and strong nuclear force. Concerning them, which one of the following statements is not correct?
HARD
RRB Group D CBT
IMPORTANT

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:

HARD
RRB Group D CBT
IMPORTANT

Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to: 

1. Resist drought and increase the porous area.

2. Tolerate extremes of pH.

3. Resist disease infestation.

Select the correct answer using the codes given below.

EASY
RRB Group D CBT
IMPORTANT

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:

MEDIUM
RRB Group D CBT
IMPORTANT

The government of India encourages the cultivation of ‘sea buckthorn’. What is the importance of this plant?  

1. It helps in controlling soil erosion and in preventing desertification.

2. It is a rich source of biodiesel.

3. It has nutritional value and is well-adapted to live in cold areas of high altitudes.

4. Its timber is of great commercial value.

Which of the statement(s) given above is /are correct?

MEDIUM
RRB Group D CBT
IMPORTANT

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

HARD
RRB Group D CBT
IMPORTANT

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?

HARD
RRB Group D CBT
IMPORTANT

Consider the following factors.

1. Rotation of the Earth

2. Air pressure and wind

3. Density of ocean water

4. Revolution of the Earth

Which of the above factors influence the ocean currents?