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Agriculture 2010 Question Paper For CBSE Class XII Exams

Agriculture

1. Mention five major classes of field crops of India with one crop as example from each group. Also give one important characteristic of each group.(5+5 Marks)

2. (a) Match the following :(5 Marks)

1. Azolla                         (1) Fungicide
2. Boron                         (2) Biofertilizer
3. 2,4-D                          (3) Insecticide
4. Endosulphan           (4)Micronutrient
5. Thiram                       (5)Herbicide 

(b) What do you understand by the following? Explain in brief.(5 Marks)

1. Soil fertility
2. Natural resources
3. Puddling
4. Interculturing
5. Minimum tillage

3. Fill in the blanks : (10 Marks)              

1.     Soluble sodium percentage in sodic soils is >........ ....  %.
2.     Crop’s over growth is called.................................
3.     Acidic soils are amended by.........................................
4.     Late Blight is a disease of..............................................................
5.     Rhizobium is a ...............................................................
6.     Rice takes up nitrogen mostly in the form of .............................. lion.
7.     Atmospheric air contains ............................... % nitrogen.
8.     C/N ratio of normal soil is 10 : 1 to 12 : ....................
9.      Arrangement of soil particles is called soil ..................................
10.     Erogot is disease of...............................................................

4. Give the following information on the two crops, Pigeon – pea and wheat :  2×5

                     Pigeon -pea

1.   Family name
2.   Botanical Name
3.   Seed rare/ha.
4.    Nutrient (N,  )needs
5.    Name one major insect

Wheat

1. Family name
2.   Botanical name
3.   Seed rate/ha.
4.   Most critical stage for irrigation
5.   Name two varieties of Green Revolution

5. Describe in brief five factors to be considered while laying out a fruit or a vegetable Nursery. (10 Marks)

6.  Fill in the blanks (10 Marks)   

1. ……………is a plant growth promoting substance.
2.    Ideal pH of juice extract of fruits for jelly preparation is ………..
3.    ………………………………. is the botanical name of mango.
4.     Hybrid polynthas are also called……………...
5.     Mandarin is widely grown in North – East provinces of  India.
6.    Allahabad Safeda is a variety of……………………..................
7.    Lye peeling is related to fruit…………….....................................
8.    Banana belongs to family……………...................................
9.    Lemon and lime are commonly propagated by ……………….. budding.
10.    The science of production of vegetables is called……………………...

7. Give the specific information asked for, for the following two crops :  ( 2×5 Marks)

              Potato         

1. Family name
2. Botanical name
3. An important variety
4. Method of propagation
5. Breaking dormancy of seed potato

                  Gladiolus  

1. Place of origin
2. Family name
3. Processing of flowers and spikes for market
4. An improved variety
5. Method of propagation