Free Horticulture MCQs with Answers

• A. Bacterial contamination
• B. Mosaicism
• C. Death of plant
• D. Vitrification

Explanation: Vitrification, also called hyperhydricity, produces water-soaked, translucent, swollen and distorted tissues in plant cultures, which may…

• A. Temperature
• B. All the above
• C. Rainfall
• D. Humidity

Explanation: Citrus production and fruit quality depend on the combined effects of temperature, humidity and rainfall.

• A. Citrange
• B. Limequate
• C. Tangelos
• D. None of the above

Explanation: A mandarin crossed with grapefruit produces a tangelo, a group of citrus hybrids combining traits of mandarins and grapefruit or related…

• A. Announaceae
• B. All the above
• C. Citrea
• D. Rutaceae

Explanation: Citrus is placed in the family Rutaceae, which includes many aromatic and oil-bearing plants.

• A. Root stock
• B. Scion
• C. Grafting
• D. Budding

Explanation: The rootstock is the basal plant portion that develops the roots and supplies anchorage, water and nutrients.

• A. Root cutting
• B. Division
• C. Mound layering
• D. Stool layering

Explanation: Division separates naturally detachable vegetative structures such as rhizomes, offsets, corms and suckers from the parent plant for…

• A. Ghooti
• B. Layering
• C. Ground layering
• D. Air layering

Explanation: In ground layering, a notched or wounded section is bent down and covered with soil until it forms roots.

• A. Budding
• B. Division
• C. Ground Layering
• D. Layering

Explanation: Layering is the formation of roots on a shoot while it remains attached to the parent plant, after which it is separated.

• A. Daminozide
• B. Chlormequat
• C. Cycocel
• D. All the above

Explanation: Daminozide and chlormequat are plant growth retardants, and Cycocel is the common trade name for chlormequat chloride.

• A. 2-4 napthalene acetic acid
• B. 2-4 diclorophenoxy acetic acid
• C. IAA
• D. All the above

Explanation: 2,4-D stands for 2,4-dichlorophenoxyacetic acid, a synthetic auxin widely used as a selective herbicide.

• A. Long day plants
• B. Short night plants
• C. Short day plants
• D. Long night plants

Explanation: Cosmos, chrysanthemum and poinsettia flower when nights are sufficiently long, so they are classified as short-day or long-night plants.

• A. Pome
• B. Berry
• C. Aril
• D. Etario of achenes

Explanation: Strawberry is an etaerio of achenes, an aggregate accessory fruit in which the apparent fleshy part is the enlarged receptacle and the…

• A. Cruciform
• B. Rosaceous
• C. Tubular
• D. Papilliaci

Explanation: A cruciform or cruciate corolla has four clawed petals arranged like a cross at right angles, as in mustard.

• A. Barries
• B. Aggregate fruit
• C. Pomes
• D. None of the above

Explanation: Pome fruits, especially apple and pear, are characteristic of the cool high-altitude regions of KP, Balochistan and the Murree hills.

• A. Dates
• B. Grapes
• C. Figs
• D. All the above

Explanation: Dates, grapes and figs are all specifically mentioned in the Holy Quran, so the inclusive option is correct.

• A. All the above
• B. Sweet lime
• C. Jaman
• D. Falsa

Explanation: Falsa, sweet lime and jaman are traditionally regarded as cooling fruits and are commonly consumed in hot weather.

• A. Protein
• B. Minerals
• C. Carbohydrates
• D. All the above

Explanation: These fruits are valued as sources of minerals such as potassium, calcium and iron, although their amounts vary by fruit.

• A. Celery
• B. Cabbage
• C. Lettuce
• D. All the above

Explanation: Celery, cabbage and lettuce are leafy vegetables containing substantial fibre and cellulose, which adds bulk to food.

• A. Aggregate fruit
• B. Multiple fruit
• C. Stone fruit
• D. All the above

Explanation: When one flower has several pistils on a common receptacle, each ovary develops into a small fruitlet and the fruitlets remain together as…

• A. Pome
• B. Berry
• C. Drupe
• D. None of the above

Explanation: A berry has a fleshy pericarp, including the ovary wall, without a hard stony layer.