id
stringlengths 2
5
| question
stringlengths 17
153
| choices
dict | answerKey
stringclasses 4
values |
|---|---|---|---|
q201
|
What is the role of stomata in photosynthesis?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Allow CO2 to enter the leaf.",
"Absorb sunlight.",
"Produce glucose directly.",
"Transport water to the roots."
]
}
|
A
|
q201
|
What is the role of stomata in photosynthesis?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Allow CO2 to enter the leaf.",
"Absorb sunlight.",
"Produce glucose directly.",
"Transport water to the roots."
]
}
|
A
|
q202
|
What is the role of roots in photosynthesis?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Roots release oxygen as a byproduct of photosynthesis.",
"Roots produce glucose during photosynthesis.",
"Roots absorb water and nutrients essential for photosynthesis.",
"Roots directly absorb sunlight for photosynthesis."
]
}
|
C
|
q202
|
What is the role of roots in photosynthesis?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Roots release oxygen as a byproduct of photosynthesis.",
"Roots produce glucose during photosynthesis.",
"Roots absorb water and nutrients essential for photosynthesis.",
"Roots directly absorb sunlight for photosynthesis."
]
}
|
C
|
q203
|
What is the term for different versions of a gene?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Genotypes",
"Chromosomes",
"Alleles",
"Phenotypes"
]
}
|
C
|
q203
|
What is the term for different versions of a gene?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Genotypes",
"Chromosomes",
"Alleles",
"Phenotypes"
]
}
|
C
|
q204
|
How do you refer to gene variants?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Chromosomes",
"Alleles",
"Phenotypes",
"Genotypes"
]
}
|
B
|
q204
|
How do you refer to gene variants?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Chromosomes",
"Alleles",
"Phenotypes",
"Genotypes"
]
}
|
B
|
q205
|
What are different versions of a gene called?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Genotypes",
"Chromosomes",
"Alleles",
"Phenotypes"
]
}
|
C
|
q205
|
What are different versions of a gene called?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Genotypes",
"Chromosomes",
"Alleles",
"Phenotypes"
]
}
|
C
|
q206
|
What is the term for all the genes in an organism?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Chromosome",
"Transcriptome",
"Proteome",
"Genome"
]
}
|
D
|
q206
|
What is the term for all the genes in an organism?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Chromosome",
"Transcriptome",
"Proteome",
"Genome"
]
}
|
D
|
q207
|
What is the term for a segment of DNA that codes for a protein?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Ribosome",
"Nucleotide",
"Chromosome",
"Gene"
]
}
|
D
|
q207
|
What is the term for a segment of DNA that codes for a protein?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Ribosome",
"Nucleotide",
"Chromosome",
"Gene"
]
}
|
D
|
q208
|
What is the role of platelets in blood?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Oxygen transport.",
"Blood clotting.",
"Nutrient distribution.",
"Fighting infection."
]
}
|
B
|
q208
|
What is the role of platelets in blood?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Oxygen transport.",
"Blood clotting.",
"Nutrient distribution.",
"Fighting infection."
]
}
|
B
|
q209
|
What function do platelets have in your body?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Oxygen transport.",
"Blood clotting.",
"Nutrient distribution.",
"Fighting infection."
]
}
|
B
|
q209
|
What function do platelets have in your body?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Oxygen transport.",
"Blood clotting.",
"Nutrient distribution.",
"Fighting infection."
]
}
|
B
|
q210
|
What do thrombocytes do to help?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Nutrient distribution.",
"Blood clotting.",
"Fighting infection.",
"Oxygen transport."
]
}
|
B
|
q210
|
What do thrombocytes do to help?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Nutrient distribution.",
"Blood clotting.",
"Fighting infection.",
"Oxygen transport."
]
}
|
B
|
q211
|
What is the role of red blood cells in blood?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Oxygen transport.",
"Nutrient distribution.",
"Fighting infection.",
"Blood clotting."
]
}
|
A
|
q211
|
What is the role of red blood cells in blood?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Oxygen transport.",
"Nutrient distribution.",
"Fighting infection.",
"Blood clotting."
]
}
|
A
|
q212
|
What is the role of white blood cells in blood?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Clot blood.",
"Transport oxygen.",
"Fight infection.",
"Carry nutrients."
]
}
|
C
|
q212
|
What is the role of white blood cells in blood?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Clot blood.",
"Transport oxygen.",
"Fight infection.",
"Carry nutrients."
]
}
|
C
|
q213
|
Where in the cell does the Krebs cycle occur?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Mitochondrial matrix",
"Nucleus",
"Cytoplasm",
"Golgi apparatus"
]
}
|
A
|
q213
|
Where in the cell does the Krebs cycle occur?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Mitochondrial matrix",
"Nucleus",
"Cytoplasm",
"Golgi apparatus"
]
}
|
A
|
q214
|
In which structure does the Krebs cycle proceed?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Mitochondrial matrix",
"Cytoplasm",
"Nucleus",
"Golgi apparatus"
]
}
|
A
|
q214
|
In which structure does the Krebs cycle proceed?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Mitochondrial matrix",
"Cytoplasm",
"Nucleus",
"Golgi apparatus"
]
}
|
A
|
q215
|
What part of the cell facilitates the Krebs cycle?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Nucleus",
"Mitochondrial matrix",
"Golgi apparatus",
"Cytoplasm"
]
}
|
B
|
q215
|
What part of the cell facilitates the Krebs cycle?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Nucleus",
"Mitochondrial matrix",
"Golgi apparatus",
"Cytoplasm"
]
}
|
B
|
q216
|
Where in the cell does glycolysis occur?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Nucleus",
"Golgi apparatus",
"Mitochondria",
"Cytoplasm"
]
}
|
D
|
q216
|
Where in the cell does glycolysis occur?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Nucleus",
"Golgi apparatus",
"Mitochondria",
"Cytoplasm"
]
}
|
D
|
q217
|
Where in the cell does translation occur?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Lysosome",
"Ribosome",
"Golgi Apparatus",
"Nucleus"
]
}
|
B
|
q217
|
Where in the cell does translation occur?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Lysosome",
"Ribosome",
"Golgi Apparatus",
"Nucleus"
]
}
|
B
|
q218
|
What type of muscle tissue is found in the heart?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Skeletal",
"Voluntary",
"Smooth",
"Cardiac"
]
}
|
D
|
q218
|
What type of muscle tissue is found in the heart?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Skeletal",
"Voluntary",
"Smooth",
"Cardiac"
]
}
|
D
|
q219
|
How can the heart be classified based on its muscles?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Skeletal",
"Voluntary",
"Smooth",
"Cardiac"
]
}
|
D
|
q219
|
How can the heart be classified based on its muscles?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Skeletal",
"Voluntary",
"Smooth",
"Cardiac"
]
}
|
D
|
q220
|
What kind of muscle supports the heart?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Smooth",
"Skeletal",
"Cardiac",
"Voluntary"
]
}
|
C
|
q220
|
What kind of muscle supports the heart?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Smooth",
"Skeletal",
"Cardiac",
"Voluntary"
]
}
|
C
|
q221
|
What type of muscle tissue is found in the biceps?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Cardiac",
"Skeletal",
"Smooth",
"Epithelial"
]
}
|
B
|
q221
|
What type of muscle tissue is found in the biceps?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Cardiac",
"Skeletal",
"Smooth",
"Epithelial"
]
}
|
B
|
q222
|
What type of muscle tissue is found in the digestive tract?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Cardiac",
"Smooth",
"Striated",
"Skeletal"
]
}
|
B
|
q222
|
What type of muscle tissue is found in the digestive tract?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Cardiac",
"Smooth",
"Striated",
"Skeletal"
]
}
|
B
|
q223
|
What is the term for an organism that consumes both plants and animals?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Herbivore",
"Detritivore",
"Omnivore",
"Carnivore"
]
}
|
C
|
q223
|
What is the term for an organism that consumes both plants and animals?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Herbivore",
"Detritivore",
"Omnivore",
"Carnivore"
]
}
|
C
|
q224
|
What are the creatures that eat both plants and animals?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Herbivore",
"Detritivore",
"Omnivore",
"Carnivore"
]
}
|
C
|
q224
|
What are the creatures that eat both plants and animals?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Herbivore",
"Detritivore",
"Omnivore",
"Carnivore"
]
}
|
C
|
q225
|
What label is given to organisms consuming both plants and animals?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Omnivore",
"Carnivore",
"Detritivore",
"Herbivore"
]
}
|
A
|
q225
|
What label is given to organisms consuming both plants and animals?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Omnivore",
"Carnivore",
"Detritivore",
"Herbivore"
]
}
|
A
|
q226
|
What is the term for an organism that consumes only plants?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Decomposer",
"Herbivore",
"Carnivore",
"Omnivore"
]
}
|
B
|
q226
|
What is the term for an organism that consumes only plants?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Decomposer",
"Herbivore",
"Carnivore",
"Omnivore"
]
}
|
B
|
q227
|
What is the term for an organism that consumes only animals?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Producer",
"Omnivore",
"Carnivore",
"Herbivore"
]
}
|
C
|
q227
|
What is the term for an organism that consumes only animals?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Producer",
"Omnivore",
"Carnivore",
"Herbivore"
]
}
|
C
|
q228
|
What is the primary purpose of cellular respiration?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"To produce ATP for cellular energy.",
"To replicate DNA for cell division.",
"To absorb nutrients from the environment.",
"To synthesize proteins from amino acids."
]
}
|
A
|
q228
|
What is the primary purpose of cellular respiration?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"To produce ATP for cellular energy.",
"To replicate DNA for cell division.",
"To absorb nutrients from the environment.",
"To synthesize proteins from amino acids."
]
}
|
A
|
q229
|
How does cellular respiration help?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"To absorb nutrients from the environment.",
"To synthesize proteins from amino acids.",
"To replicate DNA for cell division.",
"To produce ATP for cellular energy."
]
}
|
D
|
q229
|
How does cellular respiration help?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"To absorb nutrients from the environment.",
"To synthesize proteins from amino acids.",
"To replicate DNA for cell division.",
"To produce ATP for cellular energy."
]
}
|
D
|
q230
|
What does cellular respiration help cells accomplish?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"To absorb nutrients from the environment.",
"To replicate DNA for cell division.",
"To synthesize proteins from amino acids.",
"To produce ATP for cellular energy."
]
}
|
D
|
q230
|
What does cellular respiration help cells accomplish?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"To absorb nutrients from the environment.",
"To replicate DNA for cell division.",
"To synthesize proteins from amino acids.",
"To produce ATP for cellular energy."
]
}
|
D
|
q231
|
What is the primary purpose of photosynthesis?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Release oxygen into the atmosphere.",
"Absorb carbon dioxide from the atmosphere.",
"Convert light energy into chemical energy.",
"Transport water and nutrients throughout the plant."
]
}
|
C
|
q231
|
What is the primary purpose of photosynthesis?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Release oxygen into the atmosphere.",
"Absorb carbon dioxide from the atmosphere.",
"Convert light energy into chemical energy.",
"Transport water and nutrients throughout the plant."
]
}
|
C
|
q232
|
What is the primary purpose of DNA replication?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"To create an identical copy of the DNA molecule.",
"To initiate cellular respiration.",
"To repair damaged RNA.",
"To synthesize proteins directly."
]
}
|
A
|
q232
|
What is the primary purpose of DNA replication?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"To create an identical copy of the DNA molecule.",
"To initiate cellular respiration.",
"To repair damaged RNA.",
"To synthesize proteins directly."
]
}
|
A
|
q233
|
Which system in the human body regulates hormones?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Skeletal system",
"Respiratory system",
"Digestive system",
"Endocrine system"
]
}
|
D
|
q233
|
Which system in the human body regulates hormones?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Skeletal system",
"Respiratory system",
"Digestive system",
"Endocrine system"
]
}
|
D
|
q234
|
What structure produces and distributes hormones?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Digestive system",
"Skeletal system",
"Endocrine system",
"Respiratory system"
]
}
|
C
|
q234
|
What structure produces and distributes hormones?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Digestive system",
"Skeletal system",
"Endocrine system",
"Respiratory system"
]
}
|
C
|
q235
|
What controls hormone functions in your body?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Endocrine system",
"Digestive system",
"Respiratory system",
"Skeletal system"
]
}
|
A
|
q235
|
What controls hormone functions in your body?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Endocrine system",
"Digestive system",
"Respiratory system",
"Skeletal system"
]
}
|
A
|
q236
|
Which system in the human body transports nutrients?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Circulatory system",
"Skeletal system",
"Respiratory system",
"Endocrine system"
]
}
|
A
|
q236
|
Which system in the human body transports nutrients?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Circulatory system",
"Skeletal system",
"Respiratory system",
"Endocrine system"
]
}
|
A
|
q237
|
Which system in the human body transports oxygen?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Endocrine system",
"Circulatory system",
"Digestive system",
"Skeletal system"
]
}
|
B
|
q237
|
Which system in the human body transports oxygen?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Endocrine system",
"Circulatory system",
"Digestive system",
"Skeletal system"
]
}
|
B
|
q241
|
What process copies genetic information from RNA to protein?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Translation",
"Replication",
"Transcription",
"Reverse Transcription"
]
}
|
A
|
q241
|
What process copies genetic information from RNA to protein?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Translation",
"Replication",
"Transcription",
"Reverse Transcription"
]
}
|
A
|
q242
|
What process copies genetic information from DNA to DNA?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Transcription",
"Translation",
"Replication",
"Reverse Transcription"
]
}
|
C
|
q242
|
What process copies genetic information from DNA to DNA?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Transcription",
"Translation",
"Replication",
"Reverse Transcription"
]
}
|
C
|
q243
|
What is the role of the cell wall in a plant cell?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Facilitates cellular respiration.",
"Synthesizes proteins.",
"Controls genetic information.",
"Provides rigidity and support."
]
}
|
D
|
q243
|
What is the role of the cell wall in a plant cell?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Facilitates cellular respiration.",
"Synthesizes proteins.",
"Controls genetic information.",
"Provides rigidity and support."
]
}
|
D
|
q244
|
What is the purpose of the wall surrounding plant cells?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Synthesizes proteins.",
"Provides rigidity and support.",
"Facilitates cellular respiration.",
"Controls genetic information."
]
}
|
B
|
q244
|
What is the purpose of the wall surrounding plant cells?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Synthesizes proteins.",
"Provides rigidity and support.",
"Facilitates cellular respiration.",
"Controls genetic information."
]
}
|
B
|
q245
|
How does a cell wall help a plant cell?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Facilitates cellular respiration.",
"Controls genetic information.",
"Synthesizes proteins.",
"Provides rigidity and support."
]
}
|
D
|
q245
|
How does a cell wall help a plant cell?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Facilitates cellular respiration.",
"Controls genetic information.",
"Synthesizes proteins.",
"Provides rigidity and support."
]
}
|
D
|
q246
|
What is the role of the cell membrane in a plant cell?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Stores genetic information.",
"Regulates the movement of substances in and out of the cell.",
"Conducts photosynthesis.",
"Provides structural support and rigidity to the cell."
]
}
|
B
|
q246
|
What is the role of the cell membrane in a plant cell?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Stores genetic information.",
"Regulates the movement of substances in and out of the cell.",
"Conducts photosynthesis.",
"Provides structural support and rigidity to the cell."
]
}
|
B
|
q247
|
What is the role of chloroplasts in a plant cell?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Photosynthesis",
"Cellular respiration",
"Waste storage",
"Protein synthesis"
]
}
|
A
|
q247
|
What is the role of chloroplasts in a plant cell?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Photosynthesis",
"Cellular respiration",
"Waste storage",
"Protein synthesis"
]
}
|
A
|
q248
|
Which is the most inclusive (broadest) taxonomic classification?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Genus",
"Domain",
"Species",
"Family"
]
}
|
B
|
q248
|
Which is the most inclusive (broadest) taxonomic classification?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Genus",
"Domain",
"Species",
"Family"
]
}
|
B
|
q249
|
Which taxanomic unit is at the top?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Domain",
"Species",
"Genus",
"Family"
]
}
|
A
|
q249
|
Which taxanomic unit is at the top?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Domain",
"Species",
"Genus",
"Family"
]
}
|
A
|
q250
|
How do scientists classify life into its largest components?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Family",
"Domain",
"Species",
"Genus"
]
}
|
B
|
q250
|
How do scientists classify life into its largest components?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Family",
"Domain",
"Species",
"Genus"
]
}
|
B
|
q251
|
Which is the least inclusive (most specific) taxonomic classification?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Species",
"Family",
"Order",
"Class"
]
}
|
A
|
q251
|
Which is the least inclusive (most specific) taxonomic classification?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Species",
"Family",
"Order",
"Class"
]
}
|
A
|
q252
|
Which taxonomic classification includes species?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Class",
"Order",
"Family",
"Species"
]
}
|
D
|
q252
|
Which taxonomic classification includes species?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Class",
"Order",
"Family",
"Species"
]
}
|
D
|
q253
|
What is the role of guard cells in plants?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Transport water throughout the plant.",
"Regulate the opening and closing of stomata.",
"Absorb nutrients from the soil.",
"Provide structural support to the stem."
]
}
|
B
|
q253
|
What is the role of guard cells in plants?
|
{
"label": [
"A",
"B",
"C",
"D"
],
"text": [
"Transport water throughout the plant.",
"Regulate the opening and closing of stomata.",
"Absorb nutrients from the soil.",
"Provide structural support to the stem."
]
}
|
B
|
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