30 Agricultural Science Quiz Questions and Answers

Agricultural Science, also known as Agronomy, is a multidisciplinary field of science that focuses on the study of agricultural practices, crop production, and the management of agricultural resources. It involves the application of scientific principles and technologies to enhance the productivity, efficiency, and sustainability of agricultural systems.

Here is an overview of Agricultural Science:

Crop Production: Agricultural Science plays a vital role in understanding plant biology, genetics, and breeding to develop high-yielding and disease-resistant crop varieties. It involves studying soil fertility, irrigation, and pest management to optimize crop growth and yield.

Soil Science: This area of Agricultural Science explores the properties and management of soils, including soil composition, nutrients, pH levels, and erosion control. Soil scientists work to improve soil fertility and health, which is critical for sustainable agriculture.

Plant Protection: Agricultural scientists study the identification and control of pests, diseases, and weeds that can impact crop health and reduce yields. Integrated Pest Management (IPM) techniques are employed to minimize the use of chemical pesticides and promote environmentally friendly practices.

Agricultural Engineering: This field involves the application of engineering principles to design and develop agricultural machinery, equipment, and infrastructure. It aims to improve efficiency in planting, harvesting, and processing agricultural products.

Sure! Here are 30 multiple-choice questions along with their answers related to Agricultural Science:

Article overview

• Part 1: 30 agricultural science quiz questions & answers
• Part 2: Download agricultural science questions & answers for free
• Part 3: Free online quiz software – OnlineExamMaker

Part 1: 30 agricultural science quiz questions & answers

1. Question: Which process involves the conversion of atmospheric nitrogen into organic nitrogen compounds in the soil?
a) Nitrification
b) Ammonification
c) Denitrification
d) Nitrogen fixation
Answer: d) Nitrogen fixation

2. Question: Which type of soil retains the most water and has the finest particles?
a) Sandy soil
b) Loam soil
c) Clay soil
d) Silt soil
Answer: c) Clay soil

3. Question: Which agricultural practice involves growing two or more crops simultaneously on the same field in a specific pattern?
a) Crop rotation
b) Intercropping
c) Monoculture
d) Polyculture
Answer: b) Intercropping

4. Question: What is the primary function of the chlorophyll in plants?
a) Nutrient absorption
b) Water storage
c) Photosynthesis
d) Flower reproduction
Answer: c) Photosynthesis

5. Question: Which of the following is a perennial crop?
a) Wheat
b) Rice
c) Maize
d) Banana
Answer: d) Banana

6. Question: What is the process of removing salts and other impurities from seawater to make it suitable for irrigation and drinking?
a) Desalination
b) Filtration
c) Distillation
d) Chlorination
Answer: a) Desalination

7. Question: The disease “Black Sigatoka” affects which crop?
a) Cotton
b) Banana
c) Tomato
d) Potato
Answer: b) Banana

8. Question: Which of the following is an example of a leguminous crop?
a) Corn
b) Soybean
c) Wheat
d) Rice
Answer: b) Soybean

9. Question: What is the most common method of vegetative propagation in plants?
a) Grafting
b) Seed dispersal
c) Cross-pollination
d) Tissue culture
Answer: a) Grafting

10. Question: Which gas is released during the process of respiration in plants?
a) Carbon dioxide
b) Oxygen
c) Nitrogen
d) Hydrogen
Answer: a) Carbon dioxide

11. Question: Which component of the soil is responsible for holding and exchanging nutrients with plant roots?
a) Humus
b) Sand
c) Clay
d) Gravel
Answer: a) Humus

12. Question: What is the term used for the process of shedding leaves by a plant?
a) Photosynthesis
b) Deciduous
c) Transpiration
d) Evergreen
Answer: b) Deciduous

13. Question: Which of the following is a warm-season crop?
a) Wheat
b) Barley
c) Sorghum
d) Oats
Answer: c) Sorghum

14. Question: Which essential nutrient is responsible for promoting strong root development in plants?
a) Phosphorus
b) Nitrogen
c) Potassium
d) Calcium
Answer: a) Phosphorus

15. Question: What is the primary function of the stomata in plant leaves?
a) Photosynthesis
b) Transpiration
c) Reproduction
d) Absorption
Answer: b) Transpiration

Part 2: Download agricultural science questions & answers for free

16. Question: What is the process of controlled burning of crop residues to improve soil fertility and pest control called?
a) Terracing
b) Mulching
c) Slash-and-burn
d) Green manuring
Answer: d) Green manuring

17. Question: Which of the following is an example of a herbicide?
a) Nematodes
b) Fungus
c) Insecticide
d) Glyphosate
Answer: d) Glyphosate

18. Question: Which farming practice involves the use of natural predators and parasites to control pests and diseases?
a) Organic farming
b) Hydroponics
c) Conventional farming
d) Aeroponics
Answer: a) Organic farming

19. Question: The process of converting milk into yogurt is primarily carried out by which microorganism?
a) Lactobacillus
b) Saccharomyces
c) Escherichia coli
d) Streptococcus
Answer: a) Lactobacillus

20. Question: What is the primary function of the combine harvester in modern agriculture?
a) Irrigation
b) Seed planting
c) Crop harvesting
d) Fertilizer application
Answer: c) Crop harvesting

21. Question: Which of the following is a disease caused by a deficiency of vitamin C in plants?
a) Scurvy
b) Rickets
c) Pellagra
d) Beriberi
Answer: a) Scurvy

22. Question: Which of the following is a commonly used greenhouse gas in horticultural practices to enhance plant growth?
a) Carbon dioxide
b) Methane
c) Nitrous oxide
d) Chlorofluorocarbons
Answer: a) Carbon dioxide

23. Question: The process of converting grapes into wine is known as:
a) Fermentation
b) Distillation
c) Filtration
d) Pasteurization
Answer: a) Fermentation

24. Question: Which agricultural practice is designed to reduce soil erosion by plowing across the slope of the land?
a) Strip cropping
b) Contour plowing
c) Terracing
d) Shelterbelts
Answer: b) Contour plowing

25. Question: What is the primary purpose of adding nitrogen-based fertilizers to the soil?
a) Enhance root growth
b) Increase flower production
c) Promote leafy growth
d) Improve fruit quality
Answer: c) Promote leafy growth

26. Question: The practice of rotating livestock between different grazing areas to prevent overgrazing is known as:
a) Silvopasture
b) Feedlot system
c) Continuous grazing
d) Rotational grazing
Answer: d) Rotational grazing

27. Question: Which of the following is an example of a tuber crop?
a) Carrot
b) Potato
c) Cabbage
d) Onion
Answer: b) Potato

28. Question: Which of the following insects is a natural predator of aphids, thereby providing biological pest control?
a) Ladybug
b) Grasshopper
c) Fruit fly
d) Termite
Answer: a) Ladybug

29. Question: The disease “Foot-and-mouth” affects which category of livestock?
a)Cattle
b) Poultry
c) Sheep
d) Goats
Answer: a) Cattle

30. Question: Which of the following is an example of a non-renewable agricultural resource?
a) Water
b) Soil
c) Sunlight
d) Fossil fuels
Answer: d) Fossil fuels

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