Night-Blooming Cereus Trivia Questions and Answers

1: What common trait do all night-blooming cereus flowers share in terms of their bloom time?
A: They bloom in the afternoon.
B: They bloom at night.
C: They bloom at dawn.
D: They bloom at midday.
Correct Answer: B
Explanation: All night-blooming cereus flowers bloom at night, hence their name.

2: What is the alternate name for Hylocereus undatus, which is also a night-blooming cereus?
A: Princess of the Night
B: Christ in the Manger
C: Honolulu Queen
D: Dama de Noche
Correct Answer: C
Explanation: Hylocereus undatus is also known as Honolulu Queen.

3: Which species of night-blooming cereus is known for blooming only one night each year?
A: Hylocereus undatus
B: Selenicereus grandiflorus
C: Epiphyllum oxypetalum
D: Nyctocereus serpentinus
Correct Answer: B
Explanation: Selenicereus grandiflorus blooms only one night each year.

4: What color are the flowers of night-blooming cereus usually?
A: Red
B: Blue
C: Yellow
D: White
Correct Answer: D
Explanation: Night-blooming cereus flowers are almost always white or very pale shades of other colors.

5: What is the main source of the commercial dragonfruit crop among night-blooming cereus?
A: Echinopsis
B: Harrisia
C: Hylocereus undatus
D: Peniocereus greggii
Correct Answer: C
Explanation: Hylocereus undatus is the main source of the commercial dragonfruit crop.

6: Where is Epiphyllum oxypetalum, also known as gooseneck cactus, commonly grown?
A: Indoors as a houseplant
B: In desert regions
C: In dense forests
D: In alpine meadows
Correct Answer: A
Explanation: Epiphyllum oxypetalum is commonly grown as an indoor houseplant.

7: Which night-blooming cereus plant is described as a “strictly desert plant”?
A: Nyctocereus serpentinus
B: Peniocereus greggii
C: Cereus
D: Selenicereus grandiflorus
Correct Answer: B
Explanation: Peniocereus greggii is a desert plant that grows from an underground tuber and is infrequently cultivated.

8: How often do the flowers of night-blooming cereus open?
A: In the morning
B: Around noon
C: After nightfall
D: In the late afternoon
Correct Answer: C
Explanation: Night-blooming cereus flowers open after nightfall and begin to wilt by dawn.

9: Which plant is known as “Queen of the Night” aside from the actual night-blooming cereus?
A: Brugmansia
B: Nyctocereus serpentinus
C: Harrisia
D: Epiphyllum oxypetalum
Correct Answer: A
Explanation: The term “Queen of the Night” can also refer to Brugmansia, an unrelated plant species.

10: Which night-blooming cereus cactus is most frequently cultivated outdoors and known for its commercial fruit?
A: Cereus
B: Nyctocereus serpentinus
C: Hylocereus undatus
D: Monvillea
Correct Answer: C
Explanation: Hylocereus undatus is the most frequently cultivated outdoors and is known for its commercial fruit, dragonfruit.

11: Which climatic areas are night-blooming cereus typically found growing outdoors?
A: Temperate regions
B: Tropical areas
C: Arctic zones
D: Mountainous areas
Correct Answer: B
Explanation: Night-blooming cereus are mostly found outdoors in tropical areas.

12: What type of soup commonly uses dried flowers of the night-blooming cereus as an ingredient?
A: Japanese miso soup
B: Italian minestrone
C: Cantonese slow-simmered soup
D: French onion soup
Correct Answer: C
Explanation: The dried flowers of the night-blooming cereus are used in Cantonese slow-simmered soup.

13: Since the late 1990s, in which region have Hylocereus fruits been commercially grown and sold?
A: Northern Europe
B: South America
C: Tropical locations like Australia, the Philippines, Vietnam, Taiwan, and Hawaii
D: Mediterranean areas
Correct Answer: C
Explanation: Hylocereus fruit have been commercially grown and sold in tropical locations like Australia, the Philippines, Vietnam, Taiwan, and Hawaii.

14: What is the advantage of Hylocereus fruit compared to other cacti fruits?
A: Larger size
B: No exterior spines
C: Grows faster
D: Needs less water
Correct Answer: B
Explanation: Hylocereus fruit have the advantage of lacking exterior spines.

15: What time do most night-blooming cereus flowers start wilting?
A: Mid-day
B: Morning
C: Afternoon
D: By dawn
Correct Answer: D
Explanation: Most night-blooming cereus flowers start wilting by dawn.

16: The term “Dama de Noche” is associated with which plant?
A: Epiphyllum oxypetalum
B: Hylocereus undatus
C: Selenicereus grandiflorus
D: Night-blooming jasmine
Correct Answer: A
Explanation: “Dama de Noche” is another name for night-blooming cereus, specifically Epiphyllum oxypetalum.

17: In what climate are most night-blooming cereus too large or ungainly to grow indoors?
A: Tropical climates
B: Cold climates
C: Desert climates
D: Savannah climates
Correct Answer: B
Explanation: Most night-blooming cereus are too large or ungainly to grow indoors in cold climates.

18: Which species of night-blooming cereus is known for its popular cultivation?
A: Cereus
B: Hylocereus
C: Echinopsis
D: Epiphyllum oxypetalum
Correct Answer: D
Explanation: Epiphyllum oxypetalum is the most popular cultivated night-blooming cereus.

19: What is another common name for the night-blooming cereus aside from “Christ in the Manger”?
A: Queen of the Day
B: Honolulu King
C: Princess of the Night
D: Star of Night
Correct Answer: C
Explanation: “Princess of the Night” is another common name used for night-blooming cereus plants.

20: What is the genus name of the night-blooming cactus commonly known as the “San Pedro cactus”?
A: Cereus
B: Echinopsis pachanoi
C: Harrisia
D: Monvillea
Correct Answer: B
Explanation: The “San Pedro cactus” belongs to the genus Echinopsis, specifically Echinopsis pachanoi.

21: How are most night-blooming cereus flowers described in terms of scent?
A: Odorless
B: Sweet and fragrant
C: Minty aroma
D: Earthy and mild
Correct Answer: B
Explanation: Most night-blooming cereus flowers are frequently fragrant.

22: Which night-blooming cereus also produces the fruit commonly known as “gooseneck cactus”?
A: Cereus
B: Harrisia
C: Epiphyllum oxypetalum
D: Monvillea
Correct Answer: C
Explanation: Epiphyllum oxypetalum is commonly known as the gooseneck cactus.

23: What is the significant characteristic of Peniocereus greggii?
A: Multiple blooming each year
B: Strictly a desert plant
C: Grows in mountainous regions
D: Known for bright colors
Correct Answer: B
Explanation: Peniocereus greggii is strictly a desert plant which grows from an underground tuber.

24: Name another species that puts out multiple flowers over a few weeks.
A: Epiphyllum oxypetalum
B: Nyctocereus serpentinus
C: Cereus
D: Selenicereus grandiflorus
Correct Answer: A
Explanation: Epiphyllum oxypetalum puts out multiple flowers over a period of several weeks.

25: Which fruit produced by night-blooming cereus is known for its pleasant taste?
A: Cereus fruit
B: Echinopsis fruit
C: Hylocereus fruit
D: Trichocereus fruit
Correct Answer: C
Explanation: Hylocereus fruit is known for its pleasant taste and bright color.

26: During which months do healthy plants of night-blooming cereus have up to three blooming events?
A: Cool months
B: Warm months
C: Rainy season
D: Dry season
Correct Answer: B
Explanation: Healthy night-blooming cereus plants can have up to three blooming events during the warmest months.

27: In what kind of climate are Selenicereus grandiflorus commonly found?
A: Alpine
B: Tropical
C: Mediterranean
D: Desert
Correct Answer: B
Explanation: Selenicereus grandiflorus is commonly found in tropical climates.

28: What challenge can occur if the night-blooming cereus article lacks sources?
A: Removal of information
B: Higher traffic
C: More accurate info
D: Easier editing
Correct Answer: A
Explanation: Unsourced information in the article can be challenged and removed.

29: What alternative plant can be confused with night-blooming cereus due to the name “Queen of the Night”?
A: Epiphyllum oxypetalum
B: Brugmansia
C: Hylocereus undatus
D: Selenicereus grandiflorus
Correct Answer: B
Explanation: Brugmansia is an unrelated plant species also referred to as “Queen of the Night.”

30: How many times a year do some night-blooming cereus plants bloom?
A: One night
B: Twice a year
C: Multiple events in several weeks
D: All year round
Correct Answer: C
Explanation: Most night-blooming cereus plants bloom multiple times over a period of several weeks.

31: What type of environment can Epiphyllum oxypetalum thrive as a common indoor houseplant?
A: Greenhouse
B: Coastal area
C: Grassland
D: Wetland
Correct Answer: A
Explanation: Epiphyllum oxypetalum is commonly grown as an indoor houseplant in homes or greenhouses.

32: Which genus of night-blooming cereus is frequently found in tropical climatic zones like Hawaii?
A: Epiphyllum
B: Nyctocereus
C: Harrisia
D: Hylocereus
Correct Answer: D
Explanation: Hylocereus is frequently found in tropical locations like Hawaii.

33: Which night-blooming cereus genus includes species that can be tall, columnar, and tree-like?
A: Harrisia
B: Peniocereus
C: Epiphyllum
D: Cereus
Correct Answer: D
Explanation: Some Cereus species can be tall, columnar, and tree-like.

34: Which genus of night-blooming cereus produces the commercially viable dragonfruit?
A: Nyctocereus
B: Cereus
C: Hylocereus
D: Selenicereus
Correct Answer: C
Explanation: The Hylocereus genus produces the commercially grown dragonfruit.

35: How are the blooms of night-blooming cereus typically described?
A: Short-lived and vibrant
B: Long-lasting and fragrant
C: Short-lived and fragrant
D: Long-lasting and colorful
Correct Answer: C
Explanation: The blooms are short-lived and frequently fragrant.

36: What external characteristic distinguishes Hylocereus fruit from other cactus fruits?
A: Larger size
B: Exterior spines
C: Highly nutritious
D: Lacks exterior spines
Correct Answer: D
Explanation: Hylocereus fruit lacks exterior spines, making it easier to handle.

37: Which night-blooming cactus is known by the common name “gooseneck cactus”?
A: Epiphyllum oxypetalum
B: Echinopsis pachanoi
C: Selenicereus grandiflorus
D: Hylocereus undatus
Correct Answer: A
Explanation: Epiphyllum oxypetalum is known as the gooseneck cactus.

38: What cultural cuisine uses night-blooming cereus flowers in their soups?
A: Italian
B: Cantonese
C: Mexican
D: Indian
Correct Answer: B
Explanation: Cantonese cuisine uses dried flowers of the night-blooming cereus in their soups.

39: Which genus of night-blooming cereus is referred to as “Princess of the Night”?
A: Cereus
B: Epiphyllum
C: Hylocereus
D: Selenicereus
Correct Answer: B
Explanation: Epiphyllum is sometimes referred to as “Princess of the Night.”

40: What kind of flowers do night-blooming cereus plants typically bear?
A: Small and dull
B: Large and pale-colored
C: Small and colorful
D: Medium and bright
Correct Answer: B
Explanation: They bear large and pale-colored flowers.

41: Which of the following plants is not typically marketed as dragonfruit?
A: Hylocereus undatus
B: Selenicereus grandiflorus
C: Harrisia
D: Cereus
Correct Answer: B
Explanation: Selenicereus grandiflorus is not typically marketed as dragonfruit.

42: What alternative name is given to night-blooming cereus that reflects its blooming time?
A: Dawn blossom
B: Midnight Madonna
C: Dusk flower
D: Evening Empress
Correct Answer: D
Explanation: Night-blooming cereus is also called “Evening Empress” reflecting its blooming time at night.

43: Where is the primary commercial growth of Hylocereus fruit mainly centered?
A: Southern Europe
B: Western Africa
C: Southeast Asia
D: Central America
Correct Answer: C
Explanation: The primary commercial growth of Hylocereus fruit is focused in Southeast Asia and other tropical regions.

44: Which night-blooming cereus plant’s flowers are a noted ingredient in traditional Chinese soup?
A: Hylocereus undatus
B: Nyctocereus serpentinus
C: Peniocereus greggii
D: Selenicereus grandiflorus
Correct Answer: A
Explanation: The dried flowers of Hylocereus undatus are used in traditional Cantonese soup.

45: What characteristic of the night-blooming cereus makes its plants challenging for indoor cultivation?
A: Short lifespan
B: Excessive fragrance
C: Large and ungainly size
D: Low yield
Correct Answer: C
Explanation: Many night-blooming cereus are too large or ungainly for indoor cultivation.

46: What color do most night-blooming cereus flowers exhibit during peak bloom?
A: Pale pink
B: Bright red
C: Pure white
D: Light yellow
Correct Answer: C
Explanation: Most night-blooming cereus flowers are pure white when they bloom.

47: Which country is a major seller of commercially grown Hylocereus fruit?
A: Singapore
B: Hawaii
C: Canada
D: Argentina
Correct Answer: B
Explanation: Hawaii is one of the major sellers of commercially grown Hylocereus fruit.

48: In what type of geographic area do night-blooming cereus plants tend to synchronize their blooming?
A: Mountain ranges
B: Urban settings
C: Same geographical area
D: Coastal zones
Correct Answer: C
Explanation: Plants in the same geographical area tend to bloom on the same night.

49: What is the primary use of dried night-blooming cereus flowers in culinary applications?
A: Garnish
B: Salad topping
C: Slow-simmered soup ingredient
D: Frying
Correct Answer: C
Explanation: Dried night-blooming cereus flowers are used as an ingredient in slow-simmered soups in Cantonese cuisine.

50: What region does Peniocereus greggii naturally thrive in?
A: Tropical islands
B: Desert regions
C: Temperate forests
D: Coastal areas
Correct Answer: B
Explanation: Peniocereus greggii naturally thrives in desert regions.

51: What factor contributes to Hylocereus fruit’s popularity over other cactus fruits?
A: Longer shelf life
B: Bright color and pleasant taste
C: Smaller seeds
D: Lower cost
Correct Answer: B
Explanation: The bright color and pleasant taste contribute to Hylocereus fruit’s popularity.

52: Name a night-blooming cereus cactus often referred to by the name “Christ in the Manger.”
A: Cereus
B: Epiphyllum
C: Echinopsis
D: Trichocereus
Correct Answer: B
Explanation: Epiphyllum is also called “Christ in the Manger.”

53: Why might night-blooming cereus plants be found outdoors more than indoors in tropical regions?
A: Require constant sunlight
B: Too large or ungainly
C: Prefer cooler climates
D: Need rocky soil
Correct Answer: B
Explanation: They are too large or ungainly for indoor cultivation, making them more likely to be found outdoors in tropical regions.

54: What disadvantage do Selenicereus fruits have compared to Hylocereus fruits?
A: Spiny exterior
B: Smaller size
C: Brown color
D: Bitter taste
Correct Answer: A
Explanation: Selenicereus fruits have an exterior with spines, unlike Hylocereus fruits.

55: What additional citation problem is noted in the article on night-blooming cereus?
A: Needs visual aids
B: Requires user feedback
C: Lacks source verification
D: Incomplete sentences
Correct Answer: C
Explanation: The article needs additional citations for verification.

56: What is a common characteristic of the flowers of all night-blooming cereus?
A: They are very fragrant
B: They last several days
C: They are always red
D: They bloom in the day
Correct Answer: A
Explanation: Most night-blooming cereus flowers are very fragrant.

57: What type of climate do night-blooming cereus plants prefer?
A: Alpine climate
B: Arctic climate
C: Tropical and warm climate
D: Temperate climate
Correct Answer: C
Explanation: Night-blooming cereus plants prefer tropical and warm climates.

58: Which continent is not mentioned as a commercial grower of Hylocereus fruits?
A: Asia
B: Australia
C: Africa
D: North America

Correct Answer: C
Explanation: The article does not mention Africa as a commercial grower of Hylocereus fruits.

59: What is a distinctive feature of Epiphyllum oxypetalum flowers?
A: They are small and red.
B: They are colorful.
C: They are large and white.
D: They bloom during the day.
Correct Answer: C
Explanation: Epiphyllum oxypetalum flowers are large and white.

60: In what language is the traditional soup “lǎohuǒ tāng” made with night-blooming cereus flowers named?
A: Japanese
B: Cantonese
C: Korean
D: Thai
Correct Answer: B
Explanation: “Lǎohuǒ tāng” is a traditional Cantonese slow-simmered soup made with night-blooming cereus flowers.

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