Horticulture Qualification related questions

Which process involves the growth and development of plants in nutrient solutions without soil? a) Hydrology b) Hydroponics c) Phytoremediation d) Xeriscaping Answer: b) Hydroponics Which element is essential for photosynthesis in plants? a) Nitrogen b) Phosphorus c) Potassium d) Magnesium Answer: d) Magnesium What is the primary purpose of grafting in horticulture? a) Increase yield b) Enhance flower color c) Combine favorable traits from two plants d) Reduce plant height Answer: c) Combine favorable traits from two plants Which type of plant tissue is responsible for transporting water and nutrients from the roots to the rest of the plant? a) Phloem b) Xylem c) Cortex d) Pith Answer: b) Xylem Which horticultural practice involves the removal of certain parts of a plant to improve its structure and increase its productivity? a) Fertilizing b) Pruning c) Grafting d) Mulching Answer: b) Pruning Which plant hormone is primarily responsible for cell elongation and growth? a) Ethylene b) Gibberellin c) Auxin d) Cytokinin Answer: c) Auxin What is the process of growing plants from seeds called? a) Vegetative propagation b) Sexual propagation c) Tissue culture d) Micropropagation Answer: b) Sexual propagation Which type of soil is best suited for most horticultural crops? a) Sandy soil b) Clay soil c) Loamy soil d) Peaty soil Answer: c) Loamy soil Which nutrient is essential for the formation of chlorophyll in plants? a) Calcium b) Magnesium c) Sulfur d) Iron Answer: b) Magnesium What is the main purpose of mulching in horticulture? a) To increase plant height b) To retain soil moisture and reduce weeds c) To enhance flower color d) To attract pollinators Answer: b) To retain soil moisture and reduce weeds Which horticultural technique involves the use of controlled environment agriculture (CEA) for plant production? a) Field farming b) Greenhouse cultivation c) Dry farming d) Permaculture Answer: b) Greenhouse cultivation Which plant nutrient is primarily responsible for root development and flowering? a) Nitrogen b) Phosphorus c) Potassium d) Calcium Answer: b) Phosphorus What is the primary benefit of crop rotation in horticulture? a) Increases yield b) Reduces soil erosion c) Controls pests and diseases d) Enhances plant height Answer: c) Controls pests and diseases Which type of propagation involves using a part of a plant (such as a leaf or stem) to grow a new plant? a) Sexual propagation b) Vegetative propagation c) Tissue culture d) Seed germination Answer: b) Vegetative propagation Which plant hormone is involved in fruit ripening and leaf abscission? a) Auxin b) Gibberellin c) Ethylene d) Cytokinin Answer: c) Ethylene What is the main function of the root system in plants? a) Photosynthesis b) Reproduction c) Absorption of water and nutrients d) Pollination Answer: c) Absorption of water and nutrients Which soil pH is considered optimal for most horticultural crops? a) 4.0 – 5.0 b) 5.5 – 6.5 c) 7.0 – 8.0 d) 8.5 – 9.5 Answer: b) 5.5 – 6.5 Which process involves the use of beneficial insects to control pest populations in horticulture? a) Chemical control b) Biological control c) Cultural control d) Mechanical control Answer: b) Biological control Which macronutrient is commonly associated with the promotion of vegetative growth in plants? a) Phosphorus b) Potassium c) Nitrogen d) Calcium Answer: c) Nitrogen What is the primary function of chlorophyll in plants? a) Nutrient absorption b) Photosynthesis c) Water transport d) Reproduction Answer: b) Photosynthesis Which type of grafting involves joining a scion to the rootstock of another plant? a) Budding b) Layering c) T-budding d) Whip grafting Answer: d) Whip grafting Which part of the plant is primarily responsible for reproduction? a) Leaf b) Stem c) Flower d) Root Answer: c) Flower What is the primary purpose of using fertilizers in horticulture? a) To increase soil temperature b) To provide essential nutrients to plants c) To attract pollinators d) To reduce plant height Answer: b) To provide essential nutrients to plants Which type of pest control involves the use of naturally occurring chemicals derived from plants? a) Synthetic pesticides b) Biological control c) Botanical pesticides d) Cultural control Answer: c) Botanical pesticides Which horticultural practice involves growing plants in containers rather than in the ground? a) Hydroponics b) Aeroponics c) Container gardening d) Aquaponics Answer: c) Container gardening Which soil amendment is commonly used to improve soil structure and increase water retention? a) Sand b) Peat moss c) Gravel d) Perlite Answer: b) Peat moss What is the main purpose of using cover crops in horticulture? a) Increase yield b) Enhance flower color c) Improve soil health and reduce erosion d) Attract pollinators Answer: c) Improve soil health and reduce erosion Which plant family does the tomato belong to? a) Solanaceae b) Cucurbitaceae c) Fabaceae d) Rosaceae Answer: a) Solanaceae Which irrigation method involves the application of water directly to the root zone of plants? a) Sprinkler irrigation b) Drip irrigation c) Flood irrigation d) Furrow irrigation Answer: b) Drip irrigation What is the primary function of stomata in plant leaves? a) Photosynthesis b) Nutrient absorption c) Gas exchange d) Reproduction Answer: c) Gas exchange Which plant propagation method involves using a section of stem to grow a new plant? a) Seed germination b) Cutting c) Layering d) Grafting Answer: b) Cutting Which plant hormone is known for its role in promoting seed germination and breaking dormancy? a) Auxin b) Gibberellin c) Ethylene d) Cytokinin Answer: b) Gibberellin Which type of fertilizer is derived from plant and animal matter? a) Inorganic fertilizer b) Synthetic fertilizer c) Organic fertilizer d) Mineral fertilizer Answer: c) Organic fertilizer