Coffee Plant Trivia Questions and Answers

1: What percentage of the world’s coffee production is made up of Arabica coffee?
A: 80%
B: 60%
C: 50%
D: 40%
Correct Answer: B
Explanation: Arabica coffee is a dominant variety, making up about 60% of global coffee production.

2: Where are the natural populations of the Coffee plant restricted to?
A: South Ethiopia and Yemen
B: Brazil and Vietnam
C: Colombia and Panama
D: Kenya and Tanzania
Correct Answer: A
Explanation: The natural populations of Coffee plant are primarily found in the forests of South Ethiopia and Yemen.

3: Who described the Coffee plant scientifically and placed it in its own genus?
A: Antoine de Jussieu
B: Carl Linnaeus
C: Charles Darwin
D: Gregor Mendel
Correct Answer: B
Explanation: Carl Linnaeus placed the Coffee plant in its own genus, Coffea, in 1737.

4: How tall can wild Arabica coffee plants grow?
A: 3-5 meters
B: 6-8 meters
C: 9-12 meters
D: 15-18 meters
Correct Answer: C
Explanation: Wild Arabica coffee plants can grow between 9 and 12 meters tall.

5: What is the conservation status of the Coffee plant according to the IUCN?
A: Critically Endangered
B: Vulnerable
C: Near Threatened
D: Endangered
Correct Answer: D
Explanation: The Coffee plant is classified as Endangered by the IUCN.

6: What type of environment does Arabica coffee prefer to be grown in?
A: Full sun
B: Light shade
C: Sandy deserts
D: Coastal areas
Correct Answer: B
Explanation: Unlike Coffea canephora, C. arabica prefers to be grown in light shade.

7: Around what time did Arabica coffee production begin in Indonesia?
A: 1599
B: 1699
C: 1799
D: 1899
Correct Answer: B
Explanation: Arabica coffee production in Indonesia began in 1699 through the spread of Yemen’s trade.

8: Which of the following statements is true about Coffee plant hybridization?
A: It is a diploid species
B: It is an allotetraploid with two copies of different genomes
C: It carries 2 copies of 11 chromosomes
D: It was hybridized with Coffea liberica
Correct Answer: B
Explanation: Coffee plant is an allotetraploid, meaning it carries two copies of two different genomes.

9: Which of these temperatures is best for growing Arabica coffee?
A: 5-15 °C
B: 15-24 °C
C: 25-35 °C
D: 30-40 °C
Correct Answer: B
Explanation: Arabica coffee does best with an average temperature between 15 and 24 °C.

10: Why are Arabica coffee trees frequently trimmed to a height of about 2 meters?
A: To increase bean size
B: To facilitate harvesting
C: To increase flowering
D: To reduce disease
Correct Answer: B
Explanation: Arabica coffee trees are trimmed to about 2 meters to make harvesting easier.

11: How long does it typically take for an Arabica coffee plant to fully mature?
A: 3 years
B: 5 years
C: 7 years
D: 9 years
Correct Answer: C
Explanation: It takes approximately seven years for C. arabica to mature fully.

12: What conservation role does the Afromontane rainforest of Ethiopia play for C. arabica?
A: Commercial cultivation
B: Research and development
C: Genetic variation conservation
D: Coffee trading hub
Correct Answer: C
Explanation: The conservation of the genetic variation of C. arabica relies on healthy populations in the Afromontane rainforests.

13: How has climate change impacted the Coffee plant?
A: Reduced rainfall increases yield
B: Higher temperatures improve flavor
C: Threatens sustainability and growing areas
D: Reduces disease occurrence
Correct Answer: C
Explanation: Climate change, with rising temperatures and irregular rainfall, threatens the sustainability and growing areas for Arabica coffee.

14: According to genetic research, nearly all cultivated coffee originated from how many wild plants from Yemen?
A: A handful
B: Hundreds
C: Thousands
D: Tens of thousands
Correct Answer: A
Explanation: Almost all cultivated coffee over centuries originated from just a handful of wild plants from Yemen.

15: What is the approximate caffeine content in beans of normal C. arabica plants?
A: 1 mg/g
B: 5 mg/g
C: 12 mg/g
D: 20 mg/g
Correct Answer: C
Explanation: Beans of normal C. arabica plants contain 12 mg of caffeine per gram of dry mass.

16: Which well-known Arabica coffee beans are prized for their quality?
A: Jamaican Blue Mountain
B: Vietnamese Robusta
C: Liberica Coffee
D: Indian Monsooned Malabar
Correct Answer: A
Explanation: Jamaican Blue Mountain is one of the prized Arabica coffee beans for its quality.

17: What year was the Coffee plant first brought to Hawaii?
A: 1513
B: 1613
C: 1713
D: 1813
Correct Answer: D
Explanation: The Coffee plant was first brought to Hawaii in 1813.

18: How much does a single Coffee plant produce annually in terms of dried beans?
A: 0.5-5.0 kilograms
B: 1-10 kilograms
C: 5-15 kilograms
D: 10-20 kilograms
Correct Answer: A
Explanation: Each Coffee plant can produce from 0.5 to 5.0 kilograms of dried beans annually.

19: What event caused Arabica coffee plant hybridization between Coffea canephora and Coffea eugenioides?
A: Volcanic eruption
B: Trade exchange
C: Climate change in East Africa
D: Natural mutation
Correct Answer: C
Explanation: The hybridization event at the origin of the Coffee plant is linked to changing environmental conditions in East Africa.

20: What color are Arabica coffee flowers?
A: Red
B: Yellow
C: White
D: Purple
Correct Answer: C
Explanation: The flowers of Arabica coffee are white in color.

21: What threatens the genetic integrity of wild coffee populations?
A: Too much rainfall
B: Coffee cultivation exposing wild genotypes to cultivars
C: Low soil pH
D: Overharvesting
Correct Answer: B
Explanation: The genetic integrity of wild coffee is threatened by cultivation, which exposes wild genotypes to cultivars.

22: What percentage of Ethiopia’s total land surface was forest cover before major deforestation?
A: 10-15%
B: 20-25%
C: 25-31%
D: 35-40%
Correct Answer: C
Explanation: Before significant deforestation, forest cover was thought to be between 25-31% of Ethiopia’s total land surface.

23: What is the commonly used marketing label for coffee blends consisting only of Arabica?
A: 100% Arabica
B: Pure Coffee
C: Organic Blend
D: Premium Roast
Correct Answer: A
Explanation: Blends consisting only of Arabica are often labeled “100% Arabica” as a sign of quality.

24: Which coffee strain naturally contains very little caffeine?
A: Ethiopian Sidamo
B: Jamaican Blue Mountain
C: Tarrazú
D: A mutant strain of Arabica
Correct Answer: D
Explanation: One strain of Coffee plant naturally contains very little caffeine compared to normal Arabica beans.

25: When did coffee production start in Queensland, Australia?
A: 1960s
B: 1970s
C: 1980s
D: 1990s
Correct Answer: C
Explanation: Coffee production started in Queensland in the 1980s.

26: What is the likely impact of climate change on coffee cultivation by 2050?
A: Increased coffee production worldwide
B: Over half of the land used for cultivating coffee could be unproductive
C: Introduction of new coffee pests
D: Improved coffee flavor and yield
Correct Answer: B
Explanation: It is estimated that over half of the land used for cultivating coffee could be unproductive by 2050 due to climate change.

27: Besides South Ethiopia, where else was the Coffee plant recovered?
A: Nile Delta
B: Boma Plateau in South Sudan
C: Sahara Desert
D: Mount Kilimanjaro
Correct Answer: B
Explanation: Besides South Ethiopia, Coffee plant was also recovered from the Boma Plateau in South Sudan.

28: How does standing forest impact C. arabica?
A: It provides necessary shade.
B: It increases soil pH levels.
C: It reduces the number of natural pests.
D: It prevents over-ripening of berries.
Correct Answer: A
Explanation: C. arabica requires standing forest for shade, making it susceptible to deforestation.

29: Where was Arabica coffee first introduced via slip planting according to some scholars?
A: Egypt
B: Yemen
C: Brazil
D: India
Correct Answer: B
Explanation: Some scholars believe Arabica coffee was introduced from Yemen, based on a tradition involving slip planting.

30: Which coffee species might replace Arabica due to better heat tolerance?
A: Coffea canephora
B: Coffea liberica
C: Coffea stenophylla
D: Coffea excelsa
Correct Answer: C
Explanation: Coffea stenophylla may replace C. arabica as the dominant coffee species due to its better heat tolerance.

31: What is the main pest of coffee known to threaten C. arabica populations?
A: Drought beetles
B: Coffee berry borer
C: Red spider mite
D: Leaf rust
Correct Answer: B
Explanation: The coffee berry borer is the main pest that threatens C. arabica populations.

32: What part of a coffee cherry typically contains two seeds?
A: The mesocarp
B: The pericarp
C: The locules
D: The testa
Correct Answer: C
Explanation: Each berry holds two locules that contain the coffee beans.

33: At what altitude is Arabica coffee usually cultivated?
A: 100-500 m
B: 500-1000 m
C: 1300-1500 m
D: 2000-2500 m
Correct Answer: C
Explanation: Arabica coffee is usually cultivated at an altitude between 1,300 and 1,500 meters.

34: Which of the following is a known high-quality Arabica coffee bean variety?
A: Colombian Supremo
B: Vietnamese Robusta
C: Indian Robusta
D: Liberica Beans
Correct Answer: A
Explanation: Colombian Supremo is known as a high-quality Arabica coffee bean variety.

35: How many copies of the 11 chromosomes does the Coffee plant carry?
A: Two copies
B: Four copies
C: Six copies
D: Eight copies
Correct Answer: B
Explanation: The Coffee plant carries four copies of the 11 chromosomes.

36: Which country produces Arabica coffee known for its heavy body and low acidity?
A: Colombia
B: Ethiopia
C: Indonesia
D: Costa Rica
Correct Answer: C
Explanation: Indonesian coffees, such as Sumatran and Java, are known for their heavy body and low acidity.

37: What is the correct scientific classification order for the Coffee plant?
A: Rosales
B: Gentianales
C: Fabales
D: Asterales
Correct Answer: B
Explanation: The Coffee plant falls under the order Gentianales.

38: What phenomenon can lead to an inferior coffee harvest due to overflowering?
A: Abundant rainfall
B: Excessive sun exposure
C: Coffee plants producing too many berries
D: High altitudes
Correct Answer: C
Explanation: Overflowering, where coffee plants produce too many berries, can lead to an inferior harvest.

39: What is the average diameter of a Coffee plant flower?
A: 2-5 mm
B: 10-15 mm
C: 20-25 mm
D: 30-35 mm
Correct Answer: B
Explanation: Coffee plant flowers are white and have a diameter of 10-15 mm.

40: When harvested year-round, where are coffee trees planted at all times of the year?
A: Colombia
B: Java
C: Ethiopia
D: Guatemala
Correct Answer: B
Explanation: On Java, coffee trees are planted at all times of the year and harvested year-round.

41: How do cultivated Arabica plants differ from wild ones in height?
A: They grow taller
B: They grow shorter
C: They grow wider
D: They have thorny branches
Correct Answer: B
Explanation: Cultivated Arabica coffee plants are usually trimmed to a shorter height for easier harvesting.

42: How might climate change affect the coffee berry borer?
A: Decrease its population
B: Increase its population
C: Introduce new diseases
D: Prolong its lifecycle
Correct Answer: B
Explanation: Climate change may enable the coffee berry borer to colonize higher altitudes, increasing its population.

43: By what year do some studies estimate that half of the land for cultivating coffee could be unproductive?
A: 2040
B: 2050
C: 2060
D: 2070
Correct Answer: B
Explanation: Some studies estimate that by 2050, over half of the land used for cultivating coffee could be unproductive.

44: How long after planting do Arabica coffee plants produce fragrant flowers?
A: 1 year
B: 2 to 4 years
C: 5 to 7 years
D: 8 to 10 years
Correct Answer: B
Explanation: Arabica coffee plants produce small, white, highly fragrant flowers two to four years after planting.

45: What is a coffee “cherry”?
A: A flower
B: An unripe bean
C: The fruit of the coffee plant
D: A type of coffee drink
Correct Answer: C
Explanation: The term “cherry” refers to the fruit of the coffee plant, which contains the beans.

46: What term describes a marketing practice of blending less expensive beans but keeping previous labels?
A: Certification
B: Deceptive marketing
C: Shrinkflation
D: Flavor enhancement
Correct Answer: C
Explanation: Shrinkflation refers to blending less expensive beans but maintaining previous labels to reduce costs without changing the package design.

47: Why is the Ethiopian forest cover significant to the Coffee plant?
A: It enhances bean size
B: It moderates temperatures
C: It provides necessary habitat
D: It reduces pests
Correct Answer: C
Explanation: The forest cover in Ethiopia provides the necessary habitat for the Coffee plant, essential for its growth.

48: Which coffee-producing country is specifically known for its “Kona coffee”?
A: Colombia
B: India
C: Brazil
D: Hawaii
Correct Answer: D
Explanation: Hawaii, particularly the Kona region, is famous for its Kona coffee.

49: What is the primary reason for hand-picking Arabica coffee berries?
A: Uniform ripening
B: Superior yield
C: Better selection due to uneven ripening
D: Pest control
Correct Answer: C
Explanation: Hand-picking allows for better selection as Arabica coffee berries do not all ripen simultaneously.

50: Which coffee variety is known for its high body and low acidity?
A: Costa Rican Tarrazú
B: Colombian Supremo
C: Sumatran coffee
D: Guatemalan Antigua
Correct Answer: C
Explanation: Indonesian Sumatran coffee is known for its heavy body and low acidity.

51: What practice helps prevent overflowering on coffee plantations?
A: Fertilization
B: Pruning
C: Irrigation
D: Shading
Correct Answer: B
Explanation: Pruning helps prevent overflowering, which can lead to an inferior harvest.

52: What part of the coffee bean structure is referred to as the “parchment coat”?
A: Bean
B: Silver skin
C: Hull
D: Mesocarp
Correct Answer: C
Explanation: The parchment coat is the outer membrane, also known as the hull, covering the coffee bean.

53: Arabica coffee flowers resemble the fragrance of which flower?
A: Sunflower
B: Jasmine
C: Rose
D: Orchid
Correct Answer: B
Explanation: The fragrance of Arabica coffee flowers resembles the sweet smell of jasmine flowers.

54: What is the ideal rainfall for the Arabica coffee plant?
A: 0.5-1.0 meters
B: 1.0-1.5 meters
C: 1.5-2.0 meters
D: 2.0-2.5 meters
Correct Answer: B
Explanation: Arabica coffee does best with 1.0–1.5 meters of rain, evenly distributed throughout the year.

55: What species makes up most of the remaining coffee production not covered by Arabica?
A: Coffea liberica
B: Coffea canephora (Robusta)
C: Coffea excelsa
D: Coffea stenophylla
Correct Answer: B
Explanation: Most of the remaining coffee production is made up of Coffea canephora, also known as Robusta.

56: Arabica coffee is more highly susceptible to damage from which factor compared to Robusta?
A: Sunlight
B: Pests
C: Flooding
D: Salty soil
Correct Answer: B
Explanation: Arabica coffee is more vulnerable to pests compared to Coffea canephora (Robusta).

57: What year did the Coffee plant start cultivation in Queensland, Australia?
A: 1960s
B: 1970s
C: 1980s
D: 1990s
Correct Answer: C
Explanation: Coffee has been produced in Queensland since the 1980s.

58: Where does the Coffee plant prefer to grow in relation to the Tropics?
A: Only at the Equator
B: Between the Tropic of Capricorn and the Tropic of Cancer
C: Outside the Tropics
D: At Polar Regions
Correct Answer: B
Explanation: The Coffee plant is grown in dozens of countries between the Tropic of Capricorn and the Tropic of Cancer.

59: Which climate-related factor does NOT directly threaten Arabica coffee plants?
A: Rising temperatures
B: Consistent mild weather
C: Longer droughts
D: Excessive rainfall
Correct Answer: B
Explanation: Consistent mild weather does not threaten Arabica coffee plants; rather, it’s rising temperatures, longer droughts, and excessive rainfall that pose challenges.

60: What do “100% Arabica” labels on coffee packaging signify?
A: Beans from multiple coffee species
B: Arabica mixed with Robusta
C: Pure Arabica coffee
D: Coffee quality certification
Correct Answer: C
Explanation: “100% Arabica” labels signify that the blend consists entirely of Arabica coffee, indicating quality.

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