2. What are the sources of irrigation water in Pakistan? Explain different methods of irrigation to agricultural crops

3. Write a detailed note on prospects of Farm Mechanization in Pakistan

4. Explain the process of Biological Nitrogen fixation. Discuss the factors which affect this process

5. What is hybrid vigour? Explain the procedure of developing a hybrid corn

6. Expalin the process of protein synthesis in plant cell

7. What are major insects, pests and diseases of cotton crop in Pakistan? Suggest and explain an economical strategy to be
adopted by the farmers to minimize the losses due to these menaces

8. Notes (Any Four)

 Land tenure system in Pakistan
 Status of Horticulture in Pakistan
 Water logging and salinity in Pakistan
 Role of Organic matter in soil
 Livestock as an important component of Agriculture in Pakistan
 Agro Forestry

1.Ratio of additive variance to phenotypic variance
Heritability (Broad sense)
Heritability (Narrow sense)
Co- Heritability
Gene Action
None of these

2.Inflourescece of wheat plant
Spike
Panicle
Arrow
Cob
None of these

3.Nullisomic individual
2n-1
2n+1
2n-2
2n+2
None of these

4.Ribosomes are site of
Fat Synthesis
Protein Synthesis
Photo Synthesis
Anaerobic Respiration
None of these

5.Type of sugar in DNA
Pentose
Hexose
Heptose
Triose
None of these

6.Maize has 10 pairs of chromosomes. How many linkages groups will be present in maize if all genes are mapped
10 (Not sure)
20
40
15
None of these

7.Ph of Urea
4
3.5
8
7
None of these

8.According to 1972 Land reforms, ceiling of land
1000 acres irrigated and 2000 acres Barani
500 acres irrigated and 1000 acres Barani
250 acres irrigated and 500 acres Barani
150 acres irrigated and 300 acres Barani
None of these

9.Type of soils hold more water
Sandy (Not sure)
Stony
Clayey
Silty
None of these

10.Hydrosphere refers to
Zone of water
Zone of earth crust
Zone of atmosphere
Zone of air
None of these

11.Compound used for reclamation of saline sodic and sodic soils?
Apartite
Calcite
Dolomite
Gypsum
None of these

12.Carrot, raddish , Beet are
Annual
Biennial
Perenial
Woody perennial
None of these

13.Which is not fruit?
Tomato
Potato
Musk melon
Water melon
None of these

14.Body of sheep covered with
Hairs
Fleece
Wool
Fuz
None of these

15.Bovine is term used for
Cattle
Buffalo
Sheep
Goat
None of these

16.Act of giving birth to young ones is
Ovulation
Fertilization
Parturition
Conception
None of these

17.Type of mouth parts of grass hopper
Chewing
Sucking
Piercing and sucking
Biting and sponging
None of these

18.Bacteria reproduce asexually
Fragmentation
Budding
Binary fission
Multiplication
None of these

19.All goods and services produced in country in one year are called
GNP
GDP
NDP
NNP
None of these

20.Uniform removal of soil in thin layer from sloping land is called
Sheet erosion
Rill erosion
Gully erosion
Stream channel erosion
None of these

__________________
Every day is a new beginning. Treat it that way. Stay away from what might have been, and look at what can be.

Its Heritability (Narrow sense)

__________________
When you really want something, the whole universe conspires in helping you achieve it!!!

Actually the clayey soils hold most of the water, while sandy soils hold least amount of water. Reason is that sand has more wide water pores and spaces due to which water percolates downward, Reverse of it happens in clayey soils.