Questions & Answers
Browse all 20 questions from the
Plants, Nature, and Human Health study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which gas do plants release during photosynthesis that humans need to breathe to stay alive?
-
A
Carbon dioxide
-
B
Oxygen
-
C
Nitrogen
-
D
Helium
2
What is the primary source of Vitamin D for the human body, obtained through outdoor exposure?
-
A
Rainwater
-
B
Soil
-
C
Sunlight
-
D
Flower nectar
3
Which part of a plant is often consumed by humans as a vegetable to provide dietary fiber for digestion?
-
A
Roots
-
B
Petals
-
C
Thorns
-
D
Pollen
4
Many fruits are high in which essential nutrient that helps support the human immune system?
-
A
Vitamin C
-
B
Lead
-
C
Iron
-
D
Plastic
5
What substance do humans get from plants like wheat and corn that provides energy for the body?
-
A
Carbohydrates
-
B
Oil
-
C
Steel
-
D
Glass
6
Drinking water from natural sources usually requires what process to make it safe for human health?
-
A
Freezing
-
B
Filtration/Boiling
-
C
Freezing
-
D
Adding salt
7
Which plant-based food is a primary source of protein for muscle growth in humans?
-
A
Lettuce
-
B
Beans
-
C
Celery
-
D
Cucumber
8
What do plants absorb from the air that humans exhale?
-
A
Oxygen
-
B
Carbon dioxide
-
C
Argon
-
D
Neon
9
Which mineral do plants absorb from the soil that humans eventually consume to help build strong bones?
-
A
Calcium
-
B
Gold
-
C
Copper
-
D
Silver
10
What type of physical activity performed in nature is known to help improve human heart health?
-
A
Walking
-
B
Sleeping
-
C
Watching TV
-
D
Sitting
11
Which part of a plant stores water and nutrients that humans consume to stay hydrated?
-
A
The fruit
-
B
The stem
-
C
The leaf
-
D
The root
12
What natural environment is often associated with lower stress levels in humans?
-
A
A concrete parking lot
-
B
A green forest
-
C
A noisy factory
-
D
A closed windowless room
13
Which natural substance found in plants helps humans maintain healthy bowel movements?
-
A
Fiber
-
B
Sugar
-
C
Fat
-
D
Starch
14
What do bees produce from flower nectar that provides humans with a natural source of energy?
-
A
Honey
-
B
Milk
-
C
Butter
-
D
Vinegar
15
Exposure to what natural element can help regulate the human sleep-wake cycle?
-
A
Darkness
-
B
Moonlight
-
C
Daylight
-
D
Starlight
16
Which essential liquid, necessary for human survival, is naturally recycled by plants through transpiration?
-
A
Saltwater
-
B
Water
-
C
Oil
-
D
Mercury
17
What nutrient found in dark leafy greens like spinach is vital for human blood health?
-
A
Iron
-
B
Gold
-
C
Tin
-
D
Lead
18
Humans get energy by eating plants or by eating animals that have eaten plants. This is called a:
-
A
Food chain
-
B
Machine
-
C
Building
-
D
Vehicle
19
Which plant component is often used in medicine to help soothe a human sore throat?
-
A
Honey
-
B
Thorn
-
C
Bark
-
D
Seed
20
What do humans need to consume from plants to help prevent diseases and maintain overall health?
-
A
Vitamins
-
B
Rocks
-
C
Plastic
-
D
Paint
