Crop & Horticulture Management

Question 1

What is the primary characteristic that defines a crop variety within a single botanical species?

Accepted Answer

A group of plants sharing distinct, uniform, and stable characteristics.

Question 2

Which of the following pairs best exemplifies different crop varieties of the same species, *Zea mays*?

Accepted Answer

White maize and yellow maize.

Question 3

A farmer aims to produce the highest quantity of grains per unit area. Which importance of crop varieties is most relevant to this goal?

Accepted Answer

Yield Maximization.

Question 4

Selecting a crop variety that possesses genetic resistance to devastating pests and pathogens primarily addresses which importance of crop varieties?

Accepted Answer

Pest and Disease Resistance.

Question 5

Which characteristic is typically associated with local crop varieties, also known as landraces?

Accepted Answer

Highly resilient but generally produce lower yields.

Question 6

Crop plants that have been scientifically bred by plant breeders in research institutes to possess specific desirable traits are classified as:

Accepted Answer

Improved varieties.

Question 7

Which of the following is a Nigerian research institute known for developing improved crop varieties?

Accepted Answer

International Institute of Tropical Agriculture (IITA).

Question 8

What is a key characteristic of hybrid crop varieties?

Accepted Answer

They are the first-generation offspring (F1) produced by crossing two genetically distinct parent lines.

Question 9

A farmer replants seeds harvested from a hybrid crop. What is the likely outcome in the next season?

Accepted Answer

A significant loss in yield and uniformity.

Question 10

Which type of improved crop variety allows farmers to save and replant seeds for several seasons while still maintaining reasonable yield and characteristics?

Accepted Answer

Open-Pollinated Varieties (OPVs).

Question 11

Introducing specific genes from other organisms into a crop's DNA using biotechnology creates which type of variety?

Accepted Answer

Genetically Modified Varieties (GMVs).

Question 12

Identifying cowpea varieties as white, brown, rough-seeded, or smooth-seeded primarily uses which feature for identification?

Accepted Answer

Seed Characteristics.

Question 13

Distinguishing between erect (bush type) and climbing (vining type) cowpea varieties is based on their:

Accepted Answer

Growth Habit.

Question 14

What is a defining characteristic of horticultural crops compared to agronomic field crops?

Accepted Answer

They require intensive cultivation, careful handling, and high capital input.

Question 15

The branch of horticulture that deals with the production, storage, processing, and marketing of vegetable crops is called:

Accepted Answer

Olericulture.

Question 16

Which branch of horticulture focuses on the cultivation, harvesting, and marketing of fruit-bearing crops like mango, pineapple, and citrus fruits?

Accepted Answer

Pomology.

Question 17

Cultivating flowering and ornamental plants for gardens, floral industries, and aesthetic purposes, such as roses and hibiscus, falls under which branch of horticulture?

Accepted Answer

Floriculture.

Question 18

The selection, planting, and maintenance of plants to beautify and improve outdoor environments, including lawns and shade trees along roadsides, is the focus of:

Accepted Answer

Landscape Horticulture.

Question 19

A key feature used to identify most horticultural crops, especially fruits and vegetables, is their:

Accepted Answer

High moisture content, making them highly perishable.

Question 20

How does the scale of cultivation generally differ between agronomic field crops and horticultural crops?

Accepted Answer

Agronomic crops are grown on a large scale, while horticultural crops are grown on a small, intensive scale.

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