HORTICULTURE MCQS

451:     Cost benefit ratio in potato production should range:

1. 1:5
2. 1:10
3. 10:1

452. Is a variety of potato very suitable for the region of:

1. Peshawar
2. Tandojam
3. Mir Pur Khas
4. Sahiwal

453:     Yield of carrot is maximum at pH:

1. 6.5
2. 7.5
3. 8.5
4. Below 6.5

454:     Temperate varieties of carrot have ________ life cycle.

1. Annual
2. Biennial
3. Perennial
4. Unknown

455:     Which of the following vegetable is also called as

1. Carrot
2. Onion
3. Radish
4. Potato

456:     Which of the following factor(s) is/are more suitable for good onion production?

1. High temperature
2. Long photoperiod
3. None of above
4. All above

457:     Green potato tuber is inedible due to:

1. Carcinogenic
2. Hardness
3. Hollowness
4. None of above

458:     CRD is a statistical approach for:

1. Field experiment
2. Laboratory experiment
3. a & b
4. None

459:     Soft nose is a disorder of:

1. Date fruit
2. Citrus fruit
3. Mango fruit
4. Apple fruit 

460:     Guava seed before germination requires:

1. Fungicide treatment
2. Chemical treatment
3. Commercial grade H2SO4 treatment
4. All of above 

461:     Fruit splitting in pomegranate and litchi is due mainly to:

1. Water pressure
2. Dryness of air
3. Nutritional defects
4. All of above

462:     Production of vegetable out of their normal season of outdoor production is known as:

1. Vegetable forcing
2. Out of season
3. Crop production
4. Tissue culture

463:     Yellow wasp is a major pest of:

1. Grape fruit
2. Peach fruit
3. Citrus fruit
4. Mango fruit

464:     The only pest of date fruit at green hard stage is:

1. Nightangale
2. Parrot
3. Sparrow
4. All of above

465:     Study which deals with the microscopic structure of tissue is called:

1. Anatomy
2. Histology
3. Taxonomy
4. Ecology

466:     Study of plant species in relation to its environmental history is called:

1. Phylogeny
2. Histology
3. Ontogeny
4. None of these

467:     Elevation of temperate region from sea level ranges:

1. 1000-2000 m
2. 2500-3000 m
3. 3500-4000 m
4. b & c

468:     Banana belongs to type of fruit, in which the edible portion is:

1. Mesocarp
2. Syconus
3. Berry
4. Drupe

469:     Almond is a drupe fruit, in which the edible portion is:

1. Pericarp
2. Thalmus
3. Seed
4. Mesocarp

470:     Frond length of cultivated date ranges:

1. 3-5 m
2. 3-4 m
3. 2-3 m
4. 1-2 m

471:     The most important characteristics of tropical region are:

1. Snowfall
2. Frost
3. Winds
4. High temperature

472.     Addition of __________ hastens the time of fruit bud differentiation in fruit plants:

1. Nitrites
2. Nitrides
3. Nitrates
4. All of these

473.     More hormones are accumulated in plants due to accumulation of _______:

1. Nitrate
2. Starch
3. Protein
4. Vitamins

474.     Reproductive phase of fruit plants is improved by the accumulation of _____:

1. Nitrogen
2. Starch
3. Proteins
4. Cellulose

475.     Pruning in old fruit trees increases fruit bud formation by increasing ______:

1. Carbohydrates
2. New vegetative growth
3. Hormonal contents
4. Cell sap

476.     At a temperature slightly above optimum, carbohydrates are ________:

1. Produced
2. Stored
3. Utilized
4. Increased

477.     Apical bud becomes ________ in mango at fruit bud differentiation:

1. Flattened
2. Rounded
3. Dome shaped
4. Elongated

478.     The phase of fruit bud formation continues until _________:

1. Anthesis
2. Petal formation
3. Pollination
4. Differentiation

479.     The development of flower bud in tuberose is:

1. Basipetal
2. Exipetal
3. Endopetal
4. Acropetal

480.     Rate of bud development is ___________ up to winter season:

1. Slow
2. Rapid
3. Medium
4. Constant

481.     Dormancy is a function of interaction of growth promoter like GA and growth inhibitor like _________:

1. ABA
2. Cycocell
3. Alar
4. Paclobutrazole

482.     Dormancy of seed is a biological mechanisms that provides protection against ______:

1. Seed spoilage
2. Embryo abortion
3. Pre mature germination
4. Dehydration

483.     The major metabolic process which takes place in the harvested produce is _______:

1. Ripening
2. Respiration
3. Softening
4. Senescence

484.     At fruit bud differentiation in mango, C/N ratio is _______:

1. Low
2. Medium
3. High
4. Very High

485.     Annual bearing apples differentiate much greater proportion of their flowers on _______:

1. Spurs
2. Shoots
3. Leaf axils
4. Main stem

486.     Self fertility refers to the ability of a variety to produce fruits with viable ___:

1. Pollens
2. Seeds
3. Ovules
4. Ovaries

487.     Flowers having stigma below the highest anthers are called _______:

1. Apistigmatic
2. Hypostigmatic
3. Peristigmatic
4. Exostimgatic

488.     Failure of aviable pollen to grow down the style of the flower of the same variety is called ___________:

1. Self sterility
2. Self incompatibility
3. Self unfruitfulness
4. Sterility

489.     Piping is carried out in       

1. Chrysanthemum
2. Rose
3. Gladiolus
4. Carnation

490.     Chlorophyll formation takes place within a light wavelength of _________:

1. 150-200
2. 200-300
3. 300-675
4. 700-900

491.     Root formation is promoted in softwood cuttings under light intensity of __________ foot candles:

1. 100-150
2. 150-200
3. 200-250
4. 250-350

492.     Fruiting body of roses is called:

1. Button
2. Hips
3. Slip
4. None of above

493.     Apple and pear form their flowers buds in ___________:

1. May-June
2. July-August
3. September-October
4. November-December

494.     Volatile oil are those oil which can evaporate at :

1. 25^oC

495.     The renewal of NO3 involves release of ___________ from organic fraction of the soil and its rapid nitrification:

1. NO₂
2. NH₄
3. N
4. NO

496.     Most of Nitrogen is used in the decomposition of __________ and thus plant shows deficiency symptoms :

1. Amino acids
2. Cellulose
3. Carbon compounds
4. Organic matter

497.     Toxicity of Mg can be modified by adding ________:

1. N
2. PO₄
3. Ca
4. K₂O

498.     Injurious effects of sulphates can be replaced with the addition of ________:

1. Nitrates
2. Phosphates
3. Ammonia
4. Ca & Mg

499.     Internal browning in apples takes place due to _______:

1. Fungus
2. High temperature
3. Hail storm
4. Bacteria

500.     Onion seeds can germinate at a temperature of

1. 0-1^oC