Corn Plant Trivia Questions and Answers

1: What is another common name for the Corn plant?
A: Palm tree
B: Striped dracaena
C: Aloe vera
D: Money plant
Correct Answer: B
Explanation: The Corn plant is also known as striped dracaena.

2: What family does the Corn plant belong to?
A: Rosaceae
B: Asteraceae
C: Asparagaceae
D: Solanaceae
Correct Answer: C
Explanation: The Corn plant belongs to the Asparagaceae family.

3: Where is the Corn plant native to?
A: South America
B: Tropical Africa
C: Southeast Asia
D: Europe
Correct Answer: B
Explanation: The Corn plant is native to tropical Africa.

4: At what altitudes does the Corn plant typically grow?
A: 0–500 m
B: 600–2,250 m
C: 2,300–3,000 m
D: Sea level
Correct Answer: B
Explanation: The Corn plant usually grows at altitudes between 600 and 2,250 meters.

5: How tall can mature Corn plants grow?
A: 5 m
B: 10 m
C: 15 m
D: 20 m
Correct Answer: C
Explanation: Mature Corn plants can reach up to 15 meters tall.

6: What is the diameter of the Corn plant stems in old plants?
A: 10 cm
B: 20 cm
C: 30 cm
D: 40 cm
Correct Answer: C
Explanation: The stems of old Corn plants may reach up to 30 cm in diameter.

7: What color are the flowers of the Corn plant when they first bloom?
A: White
B: Yellow
C: Blue
D: Pink
Correct Answer: D
Explanation: The flowers of the Corn plant are pink when they first bloom.

8: What color do the Corn plant flowers turn when they fully open?
A: White
B: Yellow
C: Blue
D: Red
Correct Answer: A
Explanation: The flowers turn white when they fully open.

9: How long can the leaves of the Corn plant be?
A: Up to 50 cm
B: Up to 100 cm
C: Up to 150 cm
D: Up to 200 cm
Correct Answer: C
Explanation: The leaves can be up to 150 cm long.

10: What altitude range is the Corn plant not typically found in?
A: 0–500 m
B: 600–2,250 m
C: 2,300–3,000 m
D: 500–1,000 m
Correct Answer: A
Explanation: The Corn plant is typically found at higher altitudes starting at 600 m.

11: Which part of the Corn plant is highly fragrant?
A: Roots
B: Leaves
C: Stems
D: Flowers
Correct Answer: D
Explanation: The flowers of the Corn plant are highly fragrant.

12: What type of climate is the Corn plant suited to?
A: Frost-free
B: Temperate
C: Arctic
D: Desert
Correct Answer: A
Explanation: The Corn plant is suited to frost-free climates.

13: In which USDA Hardiness Zones can the Corn plant be grown outdoors?
A: 4-5
B: 6-7
C: 8-9
D: 10-11
Correct Answer: D
Explanation: The Corn plant can be grown outdoors in USDA Hardiness Zones 10-11.

14: Which indoor condition does the Corn plant tolerate well?
A: Bright direct light
B: No light
C: Bright shade
D: Extreme cold
Correct Answer: C
Explanation: The Corn plant tolerates bright shade well.

15: What does the NASA Clean Air Study suggest about the Corn plant?
A: It repels insects
B: It can remove indoor pollutants
C: It grows only indoors
D: It is toxic
Correct Answer: B
Explanation: The NASA Clean Air Study indicated the plant aids in removing indoor pollutants.

16: Which pollutants can the Corn plant help remove?
A: Carbon monoxide
B: Chlorine
C: Formaldehyde
D: Methane
Correct Answer: C
Explanation: The Corn plant can help remove pollutants like formaldehyde.

17: Which people regard the Corn plant as holy?
A: Maasai
B: Chagga
C: Zulu
D: Berber
Correct Answer: B
Explanation: The Chagga people of Tanzania regard the Corn plant as holy.

18: Which type of bird commonly visits the Corn plant’s flowers in the Neotropics?
A: Sparrow
B: Hummingbird
C: Eagle
D: Pigeon
Correct Answer: B
Explanation: Generalist hummingbird species visit the Corn plant’s flowers.

19: What is the distinctive feature of the ‘Massangeana’ cultivar?
A: Bright-red flowers
B: Spiky leaves
C: Bright-yellow central stripe on the foliage
D: Multiple stems
Correct Answer: C
Explanation: The ‘Massangeana’ cultivar has a bright-yellow central stripe on the foliage.

20: What is the main reason for the popularity of the ‘Compacta’ cultivar?
A: Large leaves
B: Suitable for indoor cultivation
C: Fast growth
D: Blue flowers
Correct Answer: B
Explanation: ‘Compacta’ is popular for being suitable for indoor cultivation.

21: Which of the following cultivars has been awarded the Royal Horticultural Society’s Award of Garden Merit?
A: ‘Janet Craig’
B: ‘Lemon Lime’
C: ‘Warneckei’
D: ‘Massangeana’
Correct Answer: D
Explanation: The ‘Massangeana’ cultivar has received the Award of Garden Merit.

22: How long should Corn plant cuttings be dried before planting for propagation?
A: 1 hour
B: 1 day
C: 1 week
D: Not dried at all
Correct Answer: B
Explanation: Cuttings should be dried for a day before planting for propagation.

23: What substrate can be used for rooting Corn plant cuttings?
A: Clay
B: Gravel
C: Perlite
D: Wood chips
Correct Answer: C
Explanation: Perlite can be used for rooting Corn plant cuttings.

24: What does the species name “D. fragrans” refer to?
A: Leaf pattern
B: Flower color
C: Fragrant flowers
D: Stem shape
Correct Answer: C
Explanation: The species name refers to the fragrant flowers of the Corn plant.

25: What is the origin of the English name “corn plant”?
A: Resemblance of the stem to a corn stalk
B: Its place of origin
C: The shape of its leaves
D: The appearance of its flowers
Correct Answer: A
Explanation: The name “corn plant” derives from the stem’s resemblance to a corn stalk.

26: What type of insects find the Corn plant’s flowers popular?
A: Flying insects
B: Crawling insects
C: Pollinating insects
D: Water insects
Correct Answer: C
Explanation: The highly fragrant flowers attract pollinating insects.

27: Which cultivation zone is not suitable for Corn plants?
A: USDA Hardiness Zone 10
B: USDA Hardiness Zone 6
C: USDA Hardiness Zone 11
D: Frost-free tropical areas
Correct Answer: B
Explanation: USDA Hardiness Zone 6 is not suitable for Corn plants.

28: What part of the Corn plant is used in its propagation?
A: Leaves
B: Flowers
C: Stem segments
D: Roots
Correct Answer: C
Explanation: Stem segments are used for propagating Corn plants.

29: What happens to young Corn plants’ stems after they flower or are damaged?
A: They die
B: They produce new roots
C: They branch out
D: They shrink
Correct Answer: C
Explanation: Young stems branch out after flowering or being damaged.

30: What is the diameter of the Corn plant’s fruit?
A: 0.5–1 cm
B: 1–2 cm
C: 2.5–3 cm
D: 3–4 cm
Correct Answer: B
Explanation: The fruit has a diameter of 1-2 cm.

31: Under what condition does the Corn plant foliage show more variegation?
A: Deep shade
B: Direct sunlight
C: Bright indirect light
D: Complete darkness
Correct Answer: C
Explanation: Bright indirect light brings out more variegation in some hybrids.

32: How long can Corn plant flowers measure in a panicle?
A: 10 cm
B: 50 cm
C: 100 cm
D: 160 cm
Correct Answer: D
Explanation: Corn plant flowers can measure up to 160 cm long in a panicle.

33: Which type of stripe is found on ‘Lemon Lime’ cultivar leaves?
A: White-central stripe
B: Yellow-outer stripe
C: Bright-yellow central stripe
D: Orange-central stripe
Correct Answer: C
Explanation: ‘Lemon Lime’ has a bright-yellow central stripe.

34: Which insect visits Corn plant flowers in tropical Africa?
A: Honeybee
B: Generalist hummingbird species
C: Butterfly
D: Beetle
Correct Answer: B
Explanation: In the Neotropics, generalist hummingbird species visit the flowers.

35: How much of the building’s floor space would need to be covered with plants according to the NASA study?
A: 0.5–10 plants/m2
B: 10–1000 plants/m2
C: 20–200 plants/m2
D: 50–500 plants/m2
Correct Answer: B
Explanation: The NASA study suggested 10–1000 plants/m2 for pollutant removal effectiveness.

36: What texture describes the leaves of Corn plants?
A: Rough
B: Glossy
C: Spiny
D: Fuzzy
Correct Answer: B
Explanation: The leaves of Corn plants are glossy green.

37: Where do old plants’ lateral, bushy stem growth usually come from?
A: Random points
B: Root sections
C: Leaf “eyes”
D: Tip edges
Correct Answer: C
Explanation: Bushy lateral stem growth comes from the leaf “eyes” located along the stem.

38: How are the flowers arranged on Corn plants?
A: Individually scattered
B: In spikes
C: In panicles
D: In clusters
Correct Answer: C
Explanation: Flowers are produced in panicles on Corn plants.

39: How wide can the leaves of the Corn plant grow?
A: Up to 2 cm
B: Up to 5 cm
C: Up to 12 cm
D: Up to 20 cm
Correct Answer: C
Explanation: The leaves can grow up to 12 cm wide.

40: What effect does deep shade have on the leaf color of the Corn plant?
A: Leaves become lighter green
B: Leaves turn dark green
C: Leaves develop stripes
D: Leaves turn brown
Correct Answer: B
Explanation: Leaves become darker green in deep shade.

41: What is the local name for the Corn plant in Sinhala?
A: මුලු ගස් (mulu gas)
B: කොන් ගස් (kon gas)
C: බෝතල් ගස් (bōthal gas)
D: පයින් ගස් (pain gas)
Correct Answer: C
Explanation: In Sinhala, the Corn plant is called බෝතල් ගස් (bōthal gas), meaning ‘bottle tree’.

42: Which cultivar is also referred to as “Mass Cane”?
A: ‘Janet Craig’
B: ‘Lemon Lime’
C: ‘Warneckei’
D: ‘Massangeana’
Correct Answer: D
Explanation: ‘Massangeana’ is commonly known as “Mass Cane.”

43: How many seeds does the Corn plant’s fruit typically contain?
A: One seed
B: Several seeds
C: No seeds
D: Single large seed
Correct Answer: B
Explanation: The fruit typically contains several seeds.

44: Which room condition best brings out more variegation in certain Corn plant hybrids?
A: Direct sunlight
B: Total darkness
C: Bright shade
D: Wet environment
Correct Answer: C
Explanation: Bright shade tends to bring out more variegation in certain hybrids.

45: Which of the following substrates is suitable for rooting Corn plant cuttings?
A: Cement
B: Sphagnum moss
C: Clay
D: Metal
Correct Answer: B
Explanation: Sphagnum moss is suitable for rooting Corn plant cuttings.

46: What does the cultivar ‘Janet Craig’ primarily refer to?
A: Flower color
B: Leaf size
C: Type of foliage pattern
D: Growth habit
Correct Answer: C
Explanation: ‘Janet Craig’ is a cultivar known for its specific type of foliage pattern.

47: What primary benefit does the Corn plant offer according to the NASA Clean Air Study?
A: Increased humidity
B: Air pollution removal
C: Pest control
D: Soil enrichment
Correct Answer: B
Explanation: The Corn plant aids in the removal of indoor air pollutants.

48: Which of the following is NOT a synonym for the Corn plant?
A: Cordyline fragrans
B: Aletris fragrans
C: Sansevieria trifasciata
D: Pleomele fragrans
Correct Answer: C
Explanation: Sansevieria trifasciata is not a synonym for the Corn plant.

49: What does variegated mean in the context of Corn plant foliage?
A: Plain green color
B: Striped or patterned leaves
C: Blue leaves
D: No leaves at all
Correct Answer: B
Explanation: Variegated foliage means the leaves have stripes or patterns.

50: What region in Africa are Corn plants used as hedge plants?
A: North Africa
B: Sub-Saharan Africa
C: East Africa
D: Northern Africa
Correct Answer: C
Explanation: In East Africa, Corn plants are commonly used as hedge plants.

51: What is the height range commonly seen in young Corn plants with a single unbranched stem?
A: 5–10 cm
B: 50–100 cm
C: 100–150 cm
D: 150–200 cm
Correct Answer: B
Explanation: Young Corn plants with a single unbranched stem commonly range from 50–100 cm in height.

52: How frequently does the flowering tip of a Corn plant result in new stems?
A: Once per year
B: Every flowering episode
C: Once in three years
D: Never
Correct Answer: B
Explanation: New stems result after every flowering episode.

53: How long are the leaves compared to the width of Corn plant fruits?
A: Twice as long
B: 10 times longer
C: 50–75 times longer
D: 100 times longer
Correct Answer: C
Explanation: The leaves can be 50–75 times longer than the width of the fruits.

54: What type of light condition can make the leaves of Corn plant darker green?
A: Bright, indirect sunlight
B: Direct sunlight
C: Deep shade
D: Artificial light
Correct Answer: C
Explanation: Deep shade can make the leaves of the Corn plant turn darker green.

55: What cultivation condition makes the ‘Compacta’ cultivar suitable for indoor environments?
A: Drought-tolerance
B: Smaller size and leaf flatness
C: Large foliage
D: Bright flowers
Correct Answer: B
Explanation: The ‘Compacta’ cultivar has smaller, flatter leaves making it suitable for indoor growth.

56: How can the new growth of Corn plant stems be identified?
A: New root formation
B: New leaf emergence
C: Change in stem color
D: Flower budding
Correct Answer: B
Explanation: New growth can be identified by the emergence of new leaves.

57: What aspect of indoor environments can the Corn plant help mitigate according to studies?
A: Low humidity
B: Indoor pollutants
C: Room temperature
D: Light levels
Correct Answer: B
Explanation: Studies suggest the Corn plant helps mitigate indoor pollutants.

58: Which of these is a less suitable soil condition for Corn plant propagation?
A: Moist perlite
B: Wet clay
C: Sphagnum moss
D: Sand
Correct Answer: B
Explanation: Wet clay is less suitable compared to perlite, sphagnum moss, and sand.

59: What is an average size for flowers on Corn plants?
A: 1 cm in diameter
B: 2.5 cm in diameter
C: 5 cm in diameter
D: 7 cm in diameter
Correct Answer: B
Explanation: The individual flowers are approximately 2.5 cm in diameter.

60: What kind of insects find the Corn plant’s highly fragrant flowers attractive?
A: Aquatic insects
B: Pollinating insects
C: Wood-boring beetles
D: Carnivorous insects
Correct Answer: B
Explanation: The highly fragrant flowers are popular with pollinating insects.

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