Questions & Answers
Browse all 18 questions from the
Horticulture and Human Health study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which essential nutrient for human vision is found in high concentrations in carrots?
-
A
Vitamin A
-
B
Vitamin D
-
C
Calcium
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D
Iron
2
Which mineral found in spinach is essential for the human body to transport oxygen in the blood?
-
A
Zinc
-
B
Iron
-
C
Magnesium
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D
Potassium
3
Which primary macronutrient do plants provide that is necessary for human digestive health?
-
A
Protein
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B
Fiber
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C
Fat
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D
Cholesterol
4
Which compound found in many colourful fruits and vegetables acts as an antioxidant in the human body?
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A
Vitamin C
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B
Caffeine
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C
Nicotine
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D
Starch
5
Which part of a wheat plant is the primary source of carbohydrates for human energy?
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A
The root
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B
The stem
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C
The grain
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D
The leaf
6
What type of plant-based food is the primary source of Vitamin C for humans?
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A
Citrus fruits
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B
Beef
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C
Fish
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D
Grains
7
Which mineral, abundant in bananas, is vital for proper human muscle and nerve function?
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A
Sodium
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B
Potassium
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C
Iodine
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D
Copper
8
What is the main source of plant-based protein for humans among these options?
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A
Legumes
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B
Apples
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C
Lettuce
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D
Celery
9
Which essential human vitamin is produced when skin is exposed to sunlight, often while gardening?
-
A
Vitamin K
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B
Vitamin B12
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C
Vitamin D
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D
Vitamin E
10
Which substance in dark leafy greens is a precursor for Vitamin A in the human body?
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A
Beta-carotene
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B
Gluten
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C
Caffeine
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D
Lactose
11
Which plant-derived fat is considered heart-healthy and is found in avocados?
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A
Trans fat
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B
Saturated fat
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C
Monounsaturated fat
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D
Animal fat
12
What nutrient provided by nuts and seeds is essential for human brain health and cell repair?
-
A
Protein
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B
Sugar
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C
Starch
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D
Salt
13
Which component of whole grains helps regulate blood sugar levels in humans?
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A
Refined sugar
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B
Complex carbohydrates
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C
Artificial color
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D
Saturated fat
14
Garlic is often studied for its potential to help humans maintain healthy levels of what?
-
A
Blood pressure
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B
Body temperature
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C
Hair colour
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D
Bone density
15
What element found in soil is taken up by plants and then used by humans for thyroid gland function?
-
A
Iodine
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B
Gold
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C
Lead
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D
Silver
16
Which natural plant compound provides humans with energy to perform physical activities?
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A
Glucose
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B
Carbon dioxide
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C
Chlorophyll
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D
Nitrogen
17
Which vegetable is a common source of Vitamin K, which is necessary for human blood clotting?
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A
Broccoli
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B
Potato
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C
Onion
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D
Garlic
18
Drinking tea, which comes from the Camellia sinensis plant, provides humans with what stimulant?
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A
Caffeine
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B
Alcohol
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C
Lactose
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D
Fructose
