Aglaonema Trivia Questions and Answers

1: What common name is often used to refer to Aglaonema plants?
A: Chinese evergreens
B: Japanese maples
C: Indian rubber plants
D: Boston ferns
Correct Answer: A
Explanation: Aglaonema plants are often known as Chinese evergreens.

2: In which family are Aglaonema plants classified?
A: Rosaceae
B: Araceae
C: Asteraceae
D: Fabaceae
Correct Answer: B
Explanation: Aglaonema plants belong to the Araceae family.

3: What type of growth habit do Aglaonema plants generally exhibit?
A: Deciduous
B: Evergreen perennial
C: Annual
D: Biennial
Correct Answer: B
Explanation: Aglaonema are evergreen perennials.

4: What feature is common in the leaves of wild Aglaonema species?
A: Red and yellow coloration
B: Silver and green variegation
C: Blue and white stripes
D: Pink tint
Correct Answer: B
Explanation: Wild Aglaonema leaves often show silver and green variegation.

5: Where are Aglaonema plants naturally found?
A: Deserts
B: Polar regions
C: Humid, shady tropical forests
D: Grasslands
Correct Answer: C
Explanation: Aglaonema plants are native to humid, shady tropical forests.

6: When were Aglaonema plants first introduced to the West?
A: 1885
B: 1901
C: 1950
D: 2000
Correct Answer: A
Explanation: Aglaonema plants were introduced to the West in 1885.

7: Which location was pivotal in the introduction of Aglaonema to the West?
A: Brooklyn Botanic Garden
B: Royal Botanic Gardens, Kew
C: Berlin Botanical Garden
D: Singapore Botanic Gardens
Correct Answer: B
Explanation: They were first brought to the Royal Botanic Gardens, Kew.

8: Which cultivar of Aglaonema is known for receiving the Royal Horticultural Society’s Award of Garden Merit?
A: Golden Pothos
B: Monstera Deliciosa
C: Lady Palm
D: Silver Queen
Correct Answer: D
Explanation: The ‘Silver Queen’ cultivar has gained this award.

9: What temperature can cause chilling injury in Aglaonema plants?
A: 5 °C
B: 10 °C
C: 15 °C
D: 20 °C
Correct Answer: C
Explanation: Chilling injury can begin at 15 °C (59 °F).

10: What symptom indicates chilling injury in Aglaonema plants?
A: Yellowing of leaves
B: Dark, greasy-looking patches on foliage
C: Wilting stems
D: Dropping flowers
Correct Answer: B
Explanation: Dark, greasy-looking patches indicate chilling injury.

11: What type of berry fruit do Aglaonema plants produce?
A: Blue berry
B: Yellow berry
C: Red berry
D: Black berry
Correct Answer: C
Explanation: The fruit is a fleshy red berry.

12: How are Aglaonema plants commonly propagated?
A: Seeds
B: Grafting
C: Cuttings and dividing basal shoots
D: Tubers
Correct Answer: C
Explanation: They are mostly propagated with cuttings and by dividing the basal shoots.

13: What type of light conditions are best suited for Aglaonema plants as houseplants?
A: Full sunlight
B: Low-light conditions
C: High UV light
D: Direct noon sun
Correct Answer: B
Explanation: Aglaonemas thrive in low-light conditions.

14: Aglaonema plants require protection from what type of environmental condition?
A: Too much rain
B: Extreme cold
C: High wind speeds
D: Hot, dry climates
Correct Answer: B
Explanation: They must be protected from cold temperatures.

15: Which fungus is known to cause issues in Aglaonema plants?
A: Rhizopus
B: Myrothecium roridum
C: Phytophthora
D: Puccinia
Correct Answer: B
Explanation: Myrothecium roridum is a pathogenic fungus affecting Aglaonema.

16: Which type of nematode is especially problematic for Aglaonema plants?
A: Root-knot nematodes
B: Stem nematodes
C: Leaf nematodes
D: Bulb nematodes
Correct Answer: A
Explanation: Root-knot nematodes cause root lesions in Aglaonema plants.

17: What are two household toxins that Aglaonema modestum can help remove?
A: Carbon dioxide and monoxide
B: Formaldehyde and benzene
C: Radon and methane
D: Sulfur dioxide and ozone
Correct Answer: B
Explanation: Aglaonema modestum is effective at removing formaldehyde and benzene from the air.

18: Why are Aglaonema plants considered poisonous?
A: Presence of saponins
B: Sodium chloride crystals
C: Calcium oxalate crystals
D: Tannins
Correct Answer: C
Explanation: They contain calcium oxalate crystals that cause irritation if ingested.

19: How should the soil condition be maintained for an Aglaonema plant?
A: Dry and sandy
B: Moist
C: Completely dry
D: Waterlogged
Correct Answer: B
Explanation: Aglaonema plants should have moist soil.

20: Which insect is a common pest for Aglaonema plants?
A: Spider mites
B: False mites (Brevipalpus californicus)
C: Whiteflies
D: Aphids
Correct Answer: B
Explanation: False mites, specifically Brevipalpus californicus, are common pests for Aglaonema plants.

21: The juice of Aglaonema plants can cause which type of skin reaction?
A: Sunburn
B: Painless irritation
C: Painful rash
D: Bruising
Correct Answer: C
Explanation: The juice can cause skin irritation and a painful rash.

22: Aglaonema costatum is commonly known by what name?
A: Golden Pothos
B: Spotted Evergreen
C: Snake Plant
D: ZZ Plant
Correct Answer: B
Explanation: Aglaonema costatum is known as Spotted Evergreen.

23: Which Aglaonema species is found in Laos, Thailand, and Vietnam?
A: Aglaonema ovatum
B: Aglaonema simplex
C: Aglaonema modestum
D: Aglaonema rotundum
Correct Answer: A
Explanation: Aglaonema ovatum is found in Laos, Thailand, and Vietnam.

24: What is a defining characteristic of Aglaonema inflorescence?
A: Bisexual flowers
B: Female flowers near the base and male flowers near the tip
C: Only male flowers
D: No distinctive flower zones
Correct Answer: B
Explanation: The inflorescence bears unisexual flowers with female flowers near the base and male flowers nearer the tip.

25: Which pest causes anthracnose in Aglaonema plants?
A: Aphids
B: Fungus (Colletotrichum)
C: Thrips
D: Bacterial blight
Correct Answer: B
Explanation: Colletotrichum fungi cause anthracnose in Aglaonema plants.

26: What color can many cultivated Aglaonema stems be?
A: Red
B: Blue
C: White or cream-colored
D: Purple
Correct Answer: C
Explanation: Many cultivated Aglaonema have white or cream-colored stems.

27: Which award is given by the Royal Horticultural Society for plant excellence?
A: Garden Merit Award
B: Horticultural Excellence Trophy
C: Botanist’s Choice Award
D: Plant of the Year
Correct Answer: A
Explanation: The Royal Horticultural Society awards the Garden Merit Award.

28: Aglaonema modestum is native to which region?
A: North America
B: Southern China and Indochina
C: Europe
D: Australia
Correct Answer: B
Explanation: Aglaonema modestum is native to Southern China and Indochina.

29: How should inflorescences be managed in houseplant care for Aglaonema?
A: Leave them alone
B: Remove them
C: Fertilize them
D: Bind them
Correct Answer: B
Explanation: Removing the inflorescences can prolong the life of the plant.

30: Aglaonema densinervium is originally from which area?
A: Africa
B: Philippines and Sulawesi
C: South America
D: Central Europe
Correct Answer: B
Explanation: Aglaonema densinervium is native to the Philippines and Sulawesi.

31: Which pathogen is harmful due to causing leaf spot in Aglaonema plants?
A: Pseudomonas cichorii
B: Fusarium solani
C: Botrytis cinerea
D: Phytophthora infestans
Correct Answer: A
Explanation: Pseudomonas cichorii bacteria are known to cause leaf spot.

32: Why have many Aglaonema cultivars been developed?
A: For use in herbal medicine
B: For their resilience to pests
C: For their leaf shape, size, color, and pattern
D: For their rapid growth and height
Correct Answer: C
Explanation: Cultivars have been developed for their ornamental attributes including leaf shape, size, color, and pattern.

33: What kind of environment are Aglaonema plants intolerant of?
A: High heat
B: Dry and arid conditions
C: Cold temperatures
D: Sandy soils
Correct Answer: C
Explanation: Aglaonema plants are intolerant of cold temperatures.

34: Aglaonema plants can root at nodes located where?
A: Along the stems
B: At the leaves
C: Only at the base
D: Only at the inflorescences
Correct Answer: A
Explanation: Aglaonema stems that grow along the ground may root at the nodes.

35: What is the main reason for the popularity of Aglaonema as houseplants?
A: Bright flowers
B: Durability and ability to live in low-light conditions
C: Fruity scent
D: Rapid growth rate
Correct Answer: B
Explanation: Their ability to thrive in low-light conditions makes them popular houseplants.

36: Which Aglaonema species is also known as the Japanese-leaf?
A: Aglaonema vittatum
B: Aglaonema modestum
C: Aglaonema commutatum
D: Aglaonema nitidum
Correct Answer: B
Explanation: Aglaonema modestum is also known as the Japanese-leaf.

37: How often do some Aglaonema cultivars require fertilization?
A: Once a week
B: Once every three years
C: Occasionally with small amounts
D: Daily
Correct Answer: C
Explanation: Some cultivars require occasional small amounts of fertilizer.

38: Which species of Aglaonema is naturalized in the West Indies?
A: Aglaonema cordifolium
B: Aglaonema commutatum
C: Aglaonema simplex
D: Aglaonema marantifolium
Correct Answer: B
Explanation: Aglaonema commutatum is naturalized in the West Indies.

39: What visual symptom do nematodes cause in Aglaonema plants?
A: Flowers fall off
B: Leaf color change
C: Root lesions
D: Stem rotting
Correct Answer: C
Explanation: Nematodes cause root lesions in Aglaonema plants.

40: Where is Aglaonema rotundum naturally found?
A: Myanmar and Thailand
B: Bangladesh and Bhutan
C: Sumatra
D: Japan and Korea
Correct Answer: C
Explanation: Aglaonema rotundum is native to Sumatra.

41: How can Aglaonema plants help improve indoor air quality?
A: By producing high amounts of oxygen
B: By filtering out chlorine
C: By removing toxins like formaldehyde and benzene
D: By trapping dust particles
Correct Answer: C
Explanation: They are effective at removing toxins like formaldehyde and benzene.

42: Which bacterial pathogen causes leaf spot in Aglaonema?
A: Xanthomonas campestris
B: Bacillus subtilis
C: Escherichia coli
D: Clostridium botulinum
Correct Answer: A
Explanation: Xanthomonas campestris is a bacterium that causes leaf spot.

43: What kind of injury does Aglaonema suffer from at 15 °C?
A: Heat exhaustion
B: Waterlogging
C: Chilling injury
D: Sunburn
Correct Answer: C
Explanation: Chilling injury occurs at temperatures as low as 15 °C (59 °F).

44: In which country is Aglaonema chermsiriwattanae naturally found?
A: Malaysia
B: Thailand
C: Cambodia
D: Vietnam
Correct Answer: B
Explanation: Aglaonema chermsiriwattanae is found in Thailand.

45: How do Aglaonema leaves appear when affected by excessive fertilizer?
A: Healthy green
B: Greasy patches
C: Burnt tips and edges
D: Bright red
Correct Answer: C
Explanation: Excessive fertilizer can cause the tips and edges of leaves to burn.

46: Aglaonema hookerianum is native to which regions?
A: Darjiling, Assam, Bangladesh, Bhutan, Myanmar
B: Japan and Korea
C: India and Pakistan
D: Australia and New Zealand
Correct Answer: A
Explanation: Aglaonema hookerianum is native to these regions.

47: What feature of Aglaonema ‘Silver Queen’ makes it unique?
A: Its bright red leaves
B: Its silver patterned foliage
C: Its height
D: Its purple flowers
Correct Answer: B
Explanation: ‘Silver Queen’ is unique for its silver-patterned foliage.

48: Aglaonema plants have been grown in Asia for what reason?
A: Culinary use
B: Noise reduction
C: Good luck
D: Timber production
Correct Answer: C
Explanation: They have been grown as luck-bringing ornamental plants.

49: Aglaonema cordifolium is native to which region?
A: Malaysia
B: Indonesia
C: Mindanao
D: Sri Lanka
Correct Answer: C
Explanation: Aglaonema cordifolium is native to Mindanao.

50: Which Aglaonema species is known as the Fox’s aglaonema?
A: Aglaonema nitidum
B: Aglaonema marantifolium
C: Aglaonema costatum
D: Aglaonema pumilum
Correct Answer: C
Explanation: Aglaonema costatum is known as Fox’s aglaonema.

51: Which farm practice can help prevent excessive drainage in Aglaonema?
A: Using sandy soil
B: Mulching with leaves
C: Ensuring soil is moist
D: Planting deeper
Correct Answer: C
Explanation: Maintaining moist soil helps prevent drainage issues.

52: What precautions should be taken while caring for annual propagation in Aglaonema?
A: Provide direct sunlight
B: Avoid cold temperatures and excessive sunlight
C: Allow complete dry periods
D: Use sandy soil exclusively
Correct Answer: B
Explanation: To care for Aglaonema plants, protect them from cold temperatures and excessive sunlight.

53: Aglaonema modestum is effective against which common household pollutant?
A: Carbon monoxide
B: Ozone
C: Nitrogen dioxide
D: Benzene
Correct Answer: D
Explanation: Aglaonema modestum is effective at removing benzene.

54: Aglaonema marantifolium is found in which location?
A: Maluku and New Guinea
B: Madagascar
C: South America
D: Central Europe
Correct Answer: A
Explanation: Aglaonema marantifolium is found in Maluku and New Guinea.

55: What leaf issue is caused by the bacteria Erwinia chrysanthemi in Aglaonema?
A: Flower fall
B: Root decay
C: Black patches
D: Leaf spot
Correct Answer: D
Explanation: Erwinia chrysanthemi causes leaf spot.

56: Aglaonema pictum is native to which locations?
A: Japan and Korea
B: Nias and Sumatra
C: Australia and New Zealand
D: Europe and Africa
Correct Answer: B
Explanation: Aglaonema pictum is native to Nias and Sumatra.

57: What primarily causes leaf spot in Aglaonema plants?
A: Excessive fertilizer
B: Insufficient sunlight
C: Fungal or bacterial infections
D: Overwatering
Correct Answer: C
Explanation: Leaf spot in Aglaonema plants is typically caused by fungal or bacterial infections.

58: What is a common symptom of nematode infestation in Aglaonema?
A: Healthy blooms
B: Root lesions
C: Wilting from the top
D: Yellow tips
Correct Answer: B
Explanation: Nematode infestations often cause root lesions.

59: In which region is Aglaonema cochinchense naturally found?
A: Southeast Asia
B: Australia
C: Europe
D: South America
Correct Answer: A
Explanation: Aglaonema cochinchense is native to Vietnam, Cambodia, Thailand, and Malaysia.

60: Exposure to which condition can prolong the life of Aglaonema houseplants?
A: Excessive watering
B: Cold temperatures
C: Removing inflorescences
D: Bright, direct sunlight
Correct Answer: C
Explanation: Removing inflorescences can help prolong the life of Aglaonema houseplants.

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