Preview Questions Horticulturist | Role Specific Skill

Question 1: How do phytochromes affect plant growth?

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They stimulate root growth under low light conditions

They regulate responses to light, affecting germination and flowering

They store water in plant tissues

They absorb nutrients from the soil

Question 2: What role do systemic insecticides play in pest management for horticultural crops?

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They provide a physical barrier that repels pests

They alter the nutritional quality of plants, deterring pests

They block pest reproduction by disrupting hormonal functions

They are absorbed by the plant and kill pests when they feed on it

Question 3: Which of the following is an important consideration when designing an automated irrigation system?

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Crop type and plant growth stage

Soil temperature and atmospheric pressure

Installation of weather sensors and moisture sensors

Water hardness and pH level of the water

Question 4: Which pest is commonly controlled by the application of Bacillus thuringiensis (Bt) in horticultural systems?

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Caterpillars such as those from the cabbage worm

Aphids and whiteflies

Root-feeding nematodes

Fleas and mites

Question 5: How do light levels inside a greenhouse affect plant growth?

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Too much light increases root growth excessively

Light levels do not affect plant growth in controlled environments

Insufficient light reduces photosynthesis and plant growth

Excessive light will cause photodormancy

Question 6: Which is the most efficient light source for supplemental lighting in greenhouses?

Which action should you take?

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High-pressure sodium (HPS) lamps

Fluorescent lights

Incandescent light bulbs

LED grow lights