Biology (School & UG)

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Biology is the science of life — from the tiniest cell to the most complex human systems. This category is designed to support school students (Classes 6–12) as well as undergraduate (UG) learners with clear explanations, exam-focused content, and concept-building resources.

You’ll find:

  • Concept-wise explanations aligned with NCERT and common UG syllabi

  • Important questions & answers for school exams, NEET foundation, and college tests

  • Human physiology, genetics, ecology, biotechnology, and cell biology explained simply

  • Practice questions, MCQs, and revision notes to strengthen understanding

  • Doubt-solving and conceptual clarity for competitive and academic success

Whether you’re preparing for school exams, building a strong base for NEET, or studying Biology at the undergraduate level, this section helps you learn smarter, revise faster, and understand Biology deeply — not just memorize it.

Learn life sciences the right way — clear concepts, exam relevance, and real understanding.

Q. Which of the following animals is an example of an amphibian?
  • A. Frog
  • B. Lizard
  • C. Shark
  • D. Eagle
Q. Which of the following bases is found in RNA but not in DNA?
  • A. Thymine
  • B. Uracil
  • C. Cytosine
  • D. Adenine
Q. Which of the following best describes a frameshift mutation?
  • A. A mutation that changes one amino acid
  • B. A mutation that adds or removes nucleotides, altering the reading frame
  • C. A mutation that duplicates a segment of DNA
  • D. A mutation that occurs in non-coding regions
Q. Which of the following best describes a recessive allele?
  • A. It is always expressed in the phenotype
  • B. It can only be expressed in a homozygous condition
  • C. It is more common than dominant alleles
  • D. It masks the effect of dominant alleles
Q. Which of the following best describes a test cross?
  • A. Crossing two homozygous individuals
  • B. Crossing a homozygous individual with a heterozygous individual
  • C. Crossing an individual with an unknown genotype with a homozygous recessive
  • D. Crossing two heterozygous individuals
Q. Which of the following best describes the concept of convergent evolution in plants?
  • A. Different species evolve similar traits due to similar environments
  • B. Species evolve different traits due to different environments
  • C. Species become extinct due to lack of adaptation
  • D. Species evolve through hybridization
Q. Which of the following best describes the process of translation?
  • A. DNA is copied into RNA
  • B. RNA is converted into a protein
  • C. Proteins are degraded
  • D. RNA is replicated
Q. Which of the following best describes the term 'genotype'?
  • A. The physical appearance of an organism
  • B. The genetic constitution of an organism
  • C. The environmental factors affecting a plant
  • D. The evolutionary history of a species
Q. Which of the following describes a homozygous genotype?
  • A. Two different alleles for a trait
  • B. Two identical alleles for a trait
  • C. One dominant and one recessive allele
  • D. A trait that is not expressed
Q. Which of the following describes a mutation?
  • A. A change in the DNA sequence
  • B. A process of DNA replication
  • C. A type of RNA molecule
  • D. A form of genetic inheritance
Q. Which of the following describes a phenotype?
  • A. The genetic makeup of an organism
  • B. The observable characteristics of an organism
  • C. The location of a gene on a chromosome
  • D. The sequence of nucleotides in DNA
Q. Which of the following describes the structure of DNA?
  • A. Single-stranded helix
  • B. Double-stranded helix
  • C. Triple-stranded helix
  • D. Linear structure
Q. Which of the following diseases is caused by a prion?
  • A. HIV/AIDS
  • B. Mad Cow Disease
  • C. Tuberculosis
  • D. Malaria
Q. Which of the following diseases is caused by a virus?
  • A. Tuberculosis
  • B. HIV/AIDS
  • C. Strep throat
  • D. Malaria
Q. Which of the following disinfectants is effective against spores?
  • A. Alcohol
  • B. Chlorine
  • C. Hydrogen peroxide
  • D. Quaternary ammonium compounds
Q. Which of the following factors can affect the rate of photosynthesis?
  • A. Light intensity
  • B. Carbon dioxide concentration
  • C. Temperature
  • D. All of the above
Q. Which of the following factors can affect the rate of respiration in plants?
  • A. Temperature
  • B. Light intensity
  • C. Soil moisture
  • D. All of the above
Q. Which of the following factors can limit the rate of photosynthesis?
  • A. Light intensity
  • B. Carbon dioxide concentration
  • C. Temperature
  • D. All of the above
Q. Which of the following factors does NOT affect the efficacy of a disinfectant?
  • A. Concentration of the disinfectant
  • B. Presence of organic matter
  • C. Temperature
  • D. Color of the disinfectant
Q. Which of the following factors does NOT affect the efficacy of disinfectants?
  • A. Concentration of the disinfectant
  • B. Contact time
  • C. Type of microorganism
  • D. Color of the disinfectant
Q. Which of the following factors does NOT affect the efficacy of disinfection?
  • A. Concentration of the disinfectant
  • B. Contact time
  • C. Temperature
  • D. Color of the disinfectant
Q. Which of the following factors does NOT affect the rate of photosynthesis?
  • A. Light intensity
  • B. Temperature
  • C. Soil pH
  • D. Carbon dioxide concentration
Q. Which of the following groups of plants is classified as non-vascular?
  • A. Mosses
  • B. Ferns
  • C. Conifers
  • D. Flowering plants
Q. Which of the following is a benefit of asexual reproduction in plants?
  • A. Increased genetic diversity
  • B. Faster population growth
  • C. Dependency on pollinators
  • D. Formation of seeds
Q. Which of the following is a benefit of plant classification in agriculture?
  • A. Improved pest control
  • B. Increased soil erosion
  • C. Higher water consumption
  • D. Reduced biodiversity
Q. Which of the following is a benefit of using composting in agriculture?
  • A. It increases soil erosion
  • B. It reduces soil fertility
  • C. It enhances soil microbial diversity
  • D. It requires chemical additives
Q. Which of the following is a benefit of using genetically modified organisms (GMOs) in agriculture?
  • A. Increased pesticide use
  • B. Higher crop yields
  • C. Reduced biodiversity
  • D. Longer growing seasons
Q. Which of the following is a benefit of using genetically modified organisms (GMOs) in crop production?
  • A. Increased susceptibility to pests
  • B. Reduced nutritional value
  • C. Enhanced resistance to diseases
  • D. Decreased yield
Q. Which of the following is a benefit of using genetically modified organisms (GMOs) in plant reproduction?
  • A. Increased genetic diversity
  • B. Enhanced resistance to pests and diseases
  • C. Slower growth rates
  • D. Reduced crop yields
Q. Which of the following is a benefit of using microbes in bioremediation?
  • A. They increase soil erosion
  • B. They can degrade pollutants
  • C. They promote invasive species
  • D. They reduce biodiversity
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