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 method of plant reproduction is commonly used in agriculture to produce clones of a desired plant?
  • A. Sexual reproduction
  • B. Cross-pollination
  • C. Asexual reproduction
  • D. Seed dispersal
Q. Which method of reproduction involves the use of spores?
  • A. Asexual reproduction
  • B. Sexual reproduction
  • C. Vegetative propagation
  • D. Grafting
Q. Which microbe is known for producing the antibiotic penicillin?
  • A. Bacillus cereus
  • B. Penicillium chrysogenum
  • C. Streptomyces griseus
  • D. Escherichia coli
Q. Which microbe is primarily responsible for the fermentation of bread?
  • A. Lactobacillus
  • B. Saccharomyces cerevisiae
  • C. Aspergillus niger
  • D. Clostridium botulinum
Q. Which microbe is primarily responsible for the fermentation of sauerkraut?
  • A. Lactobacillus
  • B. Bacillus
  • C. Clostridium
  • D. Staphylococcus
Q. Which microbe is primarily responsible for the fermentation process in bread making?
  • A. Lactobacillus
  • B. Saccharomyces cerevisiae
  • C. Rhizobium
  • D. Clostridium
Q. Which microbe is used in the production of vinegar?
  • A. Lactobacillus
  • B. Acetobacter
  • C. Saccharomyces
  • D. Bacillus
Q. Which microorganism is known for causing cholera?
  • A. Vibrio cholerae
  • B. Salmonella enterica
  • C. Clostridium botulinum
  • D. Listeria monocytogenes
Q. Which microorganism is primarily responsible for causing tuberculosis?
  • A. Streptococcus pneumoniae
  • B. Mycobacterium tuberculosis
  • C. Escherichia coli
  • D. Staphylococcus aureus
Q. Which molecular technique is used to amplify a specific DNA segment?
  • A. Gel electrophoresis
  • B. Polymerase chain reaction (PCR)
  • C. DNA sequencing
  • D. Cloning
Q. Which molecular technique is used to amplify DNA?
  • A. Gel electrophoresis
  • B. PCR
  • C. Cloning
  • D. Sequencing
Q. Which molecular technique is used to separate DNA fragments by size?
  • A. Gel electrophoresis
  • B. PCR
  • C. Cloning
  • D. DNA sequencing
Q. Which molecule acts as an electron carrier in the light reactions?
  • A. ATP
  • B. NADPH
  • C. FADH2
  • D. RuBP
Q. Which molecule acts as the electron carrier in the light reactions?
  • A. NADP+
  • B. FADH2
  • C. ATP
  • D. RuBP
Q. Which molecule acts as the primary electron carrier in the light reactions?
  • A. NADP+
  • B. FADH2
  • C. ATP
  • D. ADP
Q. Which molecule acts as the primary electron donor in the light reactions?
  • A. Water
  • B. NADP+
  • C. Glucose
  • D. RuBP
Q. Which molecule acts as the primary energy carrier in the dark reactions?
  • A. ATP
  • B. NADPH
  • C. Glucose
  • D. RuBP
Q. Which molecule acts as the primary energy carrier in the light reactions?
  • A. ATP
  • B. NADPH
  • C. Glucose
  • D. RuBP
Q. Which molecule is produced as a byproduct of the light reactions?
  • A. Glucose
  • B. Oxygen
  • C. NADPH
  • D. ATP
Q. Which molecule is produced as a byproduct of the light-dependent reactions?
  • A. Glucose
  • B. Oxygen
  • C. NADPH
  • D. ATP
Q. Which molecule is produced during the Calvin cycle in the dark reactions?
  • A. NADPH
  • B. ATP
  • C. Glucose
  • D. Oxygen
Q. Which molecule is produced during the light reactions and used in the Calvin cycle?
  • A. Oxygen
  • B. Glucose
  • C. NADPH
  • D. Carbon dioxide
Q. Which muscle is primarily responsible for the process of inhalation?
  • A. Diaphragm
  • B. Intercostal muscles
  • C. Abdominal muscles
  • D. Pectoral muscles
Q. Which mutation can result in a premature stop codon?
  • A. Silent mutation
  • B. Missense mutation
  • C. Nonsense mutation
  • D. Frameshift mutation
Q. Which mutation results in a change in a single amino acid in a protein?
  • A. Silent mutation
  • B. Nonsense mutation
  • C. Missense mutation
  • D. Frameshift mutation
Q. Which nitrogenous base is found in RNA but not in DNA?
  • A. Thymine
  • B. Uracil
  • C. Cytosine
  • D. Adenine
Q. Which of the following adaptations is crucial for the survival of plants in arid environments?
  • A. Broad leaves
  • B. Deep roots
  • C. High water content
  • D. Thick cuticles
Q. Which of the following adaptations is NOT typically associated with the evolution of desert plants?
  • A. Thick cuticles
  • B. Deep root systems
  • C. Broad leaves
  • D. Water storage tissues
Q. Which of the following animal groups is characterized by having a notochord at some stage of their life cycle?
  • A. Mollusks
  • B. Arthropods
  • C. Chordates
  • D. Echinoderms
Q. Which of the following animal groups is primarily aquatic and has gills for respiration?
  • A. Mammals
  • B. Birds
  • C. Fish
  • D. Reptiles
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