Q. Which of the following is NOT a major group in the plant kingdom?
A.
Bryophytes
B.
Angiosperms
C.
Fungi
D.
Gymnosperms
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Solution
Fungi are not classified within the plant kingdom; they belong to a separate kingdom.
Correct Answer: C — Fungi
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Q. Which of the following is NOT a method of asexual reproduction in plants?
A.
Cuttings
B.
Grafting
C.
Seed formation
D.
Layering
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Solution
Seed formation is a method of sexual reproduction, while cuttings, grafting, and layering are asexual methods.
Correct Answer: C — Seed formation
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Q. Which of the following is NOT a method of assisted reproductive technology?
A.
In vitro fertilization
B.
Intracytoplasmic sperm injection
C.
Artificial insemination
D.
Natural conception
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Solution
Natural conception is not considered a method of assisted reproductive technology, while the others are.
Correct Answer: D — Natural conception
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Q. Which of the following is NOT a method of disinfection?
A.
Ultraviolet light
B.
Autoclaving
C.
Chemical disinfectants
D.
Boiling water
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Solution
Autoclaving is a method of sterilization, not disinfection, as it kills all microorganisms including spores.
Correct Answer: B — Autoclaving
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Q. Which of the following is NOT a method of plant biotechnology?
A.
Gene cloning
B.
Tissue culture
C.
Traditional breeding
D.
DNA sequencing
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Solution
Traditional breeding is not considered a method of plant biotechnology, as it does not involve modern genetic manipulation techniques.
Correct Answer: C — Traditional breeding
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Q. Which of the following is NOT a method of plant genetic modification?
A.
Gene editing
B.
Selective breeding
C.
Gene silencing
D.
Transgenic technology
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Solution
Selective breeding is a traditional method and not a direct genetic modification technique like gene editing or transgenic technology.
Correct Answer: B — Selective breeding
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Q. Which of the following is NOT a method of plant genetic transformation?
A.
Agrobacterium-mediated transformation
B.
Electroporation
C.
Microinjection
D.
Photosynthesis
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Solution
Photosynthesis is a natural process for energy conversion in plants and is not a method of genetic transformation.
Correct Answer: D — Photosynthesis
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Q. Which of the following is NOT a method of seed dispersal?
A.
Wind
B.
Water
C.
Animal ingestion
D.
Photosynthesis
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Solution
Photosynthesis is not a method of seed dispersal; it is the process by which plants convert light energy into chemical energy.
Correct Answer: D — Photosynthesis
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Q. Which of the following is NOT a method of sterilization?
A.
Filtration
B.
Radiation
C.
Boiling water
D.
Autoclaving
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Solution
Boiling water is not a reliable method of sterilization as it does not kill all spores and certain resistant pathogens.
Correct Answer: C — Boiling water
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Q. Which of the following is NOT a method of vegetative propagation?
A.
Cuttings
B.
Layering
C.
Grafting
D.
Cross-pollination
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Solution
Cross-pollination is a method of sexual reproduction, not vegetative propagation, which involves the asexual reproduction of plants.
Correct Answer: D — Cross-pollination
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Q. Which of the following is NOT a part of the human digestive tract?
A.
Esophagus
B.
Stomach
C.
Pancreas
D.
Large intestine
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Solution
The pancreas is an accessory organ and is not part of the digestive tract itself.
Correct Answer: C — Pancreas
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Q. Which of the following is NOT a phase of plant growth?
A.
Maturation
B.
Germination
C.
Juvenile
D.
Reproductive
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Solution
Maturation is not a recognized phase of plant growth; the main phases are germination, juvenile, and reproductive.
Correct Answer: A — Maturation
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Q. Which of the following is NOT a product of the light reactions?
A.
ATP
B.
NADPH
C.
Glucose
D.
Oxygen
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Solution
Glucose is not produced during the light reactions; it is synthesized in the Calvin cycle.
Correct Answer: C — Glucose
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Q. Which of the following is NOT a product of the light-dependent reactions?
A.
ATP
B.
NADPH
C.
Oxygen
D.
Glucose
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Solution
Glucose is not produced in the light-dependent reactions; it is produced in the Calvin cycle.
Correct Answer: D — Glucose
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Q. Which of the following is NOT a stage of photosynthesis?
A.
Light-dependent reactions
B.
Calvin cycle
C.
Krebs cycle
D.
Light-independent reactions
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Solution
The Krebs cycle is part of cellular respiration, not photosynthesis.
Correct Answer: C — Krebs cycle
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Q. Which of the following is NOT a type of meristematic tissue?
A.
Apical meristem
B.
Lateral meristem
C.
Intercalary meristem
D.
Cork cambium
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Solution
Cork cambium is a type of lateral meristem, but it is not classified as a meristematic tissue in the same sense as apical, lateral, and intercalary meristems.
Correct Answer: D — Cork cambium
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Q. Which of the following is NOT a type of plant tissue?
A.
Meristematic
B.
Vascular
C.
Dermal
D.
Epithelial
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Solution
Epithelial tissue is not a type of plant tissue; it is found in animals.
Correct Answer: D — Epithelial
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Q. Which of the following is the largest group of flowering plants?
A.
Monocots
B.
Dicots
C.
Gymnosperms
D.
Ferns
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Solution
Monocots are the largest group of flowering plants.
Correct Answer: A — Monocots
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Q. Which of the following methods is most effective for sterilizing heat-sensitive instruments?
A.
Autoclaving
B.
Ethylene oxide gas
C.
Dry heat sterilization
D.
Chemical disinfection
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Solution
Ethylene oxide gas is effective for sterilizing heat-sensitive instruments as it can penetrate materials without causing damage.
Correct Answer: B — Ethylene oxide gas
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Q. Which of the following methods is NOT considered a form of sterilization?
A.
Autoclaving
B.
Dry heat sterilization
C.
Chemical disinfection
D.
Filtration
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Solution
Chemical disinfection is a method used to reduce microbial load but does not guarantee the elimination of all microorganisms, thus it is not considered sterilization.
Correct Answer: C — Chemical disinfection
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Q. Which of the following methods is NOT typically used for sterilization?
A.
Autoclaving
B.
Dry heat
C.
Chemical disinfection
D.
Filtration
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Solution
Chemical disinfection is used to reduce microbial load but does not guarantee the elimination of all microorganisms, thus it is not a sterilization method.
Correct Answer: C — Chemical disinfection
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Q. Which of the following microbes is commonly used in the production of yogurt?
A.
Lactobacillus
B.
Escherichia coli
C.
Bacillus subtilis
D.
Saccharomyces cerevisiae
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Solution
Lactobacillus is a genus of bacteria that ferments lactose to produce lactic acid, which is essential in yogurt production.
Correct Answer: A — Lactobacillus
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Q. Which of the following microbes is essential for the fermentation process in bread making?
A.
Yeast
B.
Mold
C.
Bacteria
D.
Virus
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Solution
Yeast, particularly Saccharomyces cerevisiae, ferments sugars to produce carbon dioxide, causing the bread to rise.
Correct Answer: A — Yeast
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Q. Which of the following microbes is used in the production of vinegar?
A.
Lactobacillus
B.
Acetobacter
C.
Bacillus
D.
Clostridium
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Solution
Acetobacter is a genus of bacteria that converts ethanol into acetic acid, the main component of vinegar.
Correct Answer: B — Acetobacter
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Q. Which of the following microorganisms is known to cause tuberculosis?
A.
Streptococcus pneumoniae
B.
Mycobacterium tuberculosis
C.
Escherichia coli
D.
Staphylococcus aureus
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Solution
Mycobacterium tuberculosis is the causative agent of tuberculosis, a serious infectious disease that primarily affects the lungs.
Correct Answer: B — Mycobacterium tuberculosis
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Q. Which of the following microorganisms is primarily responsible for causing tuberculosis?
A.
Streptococcus pneumoniae
B.
Mycobacterium tuberculosis
C.
Escherichia coli
D.
Staphylococcus aureus
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Solution
Mycobacterium tuberculosis is the causative agent of tuberculosis, a serious infectious disease that primarily affects the lungs.
Correct Answer: B — Mycobacterium tuberculosis
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Q. Which of the following mutations does NOT change the amino acid sequence?
A.
Missense mutation
B.
Nonsense mutation
C.
Silent mutation
D.
Frameshift mutation
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Solution
A silent mutation does not change the amino acid sequence due to the redundancy of the genetic code.
Correct Answer: C — Silent mutation
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Q. Which of the following mutations involves a change in a single nucleotide?
A.
Frameshift mutation
B.
Point mutation
C.
Deletion mutation
D.
Duplication mutation
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Solution
A point mutation involves a change in a single nucleotide, which can lead to a different amino acid being incorporated into a protein.
Correct Answer: B — Point mutation
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Q. Which of the following mutations is a change in a single nucleotide?
A.
Frameshift mutation
B.
Point mutation
C.
Deletion mutation
D.
Duplication mutation
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Solution
A point mutation is a change in a single nucleotide in the DNA sequence.
Correct Answer: B — Point mutation
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Q. Which of the following mutations is likely to have the most severe effect on a protein?
A.
Silent mutation
B.
Missense mutation
C.
Nonsense mutation
D.
Frameshift mutation
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Solution
Frameshift mutations can alter the reading frame of the genetic code, potentially leading to a completely nonfunctional protein.
Correct Answer: D — Frameshift mutation
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