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. What is the scientific name for the division that includes ferns?
  • A. Bryophyta
  • B. Pteridophyta
  • C. Gymnospermae
  • D. Angiospermae
Q. What is the significance of actinobacteria in soil health?
  • A. They are pathogens to plants
  • B. They produce antibiotics
  • C. They enhance photosynthesis
  • D. They increase soil salinity
Q. What is the significance of alkaloids in plants?
  • A. Photosynthesis
  • B. Medicinal properties
  • C. Water storage
  • D. Nutrient transport
Q. What is the significance of antioxidants found in fruits and vegetables for human health?
  • A. They provide energy
  • B. They prevent cell damage
  • C. They enhance flavor
  • D. They increase weight
Q. What is the significance of apomixis in plant reproduction?
  • A. It allows for sexual reproduction without fertilization
  • B. It increases the need for pollinators
  • C. It reduces seed viability
  • D. It promotes genetic diversity
Q. What is the significance of crossing over during meiosis in plants?
  • A. It increases genetic diversity
  • B. It ensures identical offspring
  • C. It repairs DNA
  • D. It produces energy
Q. What is the significance of endophytes in plants?
  • A. They cause diseases
  • B. They enhance plant growth
  • C. They compete with roots for nutrients
  • D. They are harmful to humans
Q. What is the significance of gel electrophoresis in molecular biology?
  • A. To separate DNA fragments based on size
  • B. To amplify DNA
  • C. To synthesize proteins
  • D. To sequence RNA
Q. What is the significance of genetic recombination in plants?
  • A. It increases genetic diversity
  • B. It decreases mutation rates
  • C. It stabilizes the genome
  • D. It enhances photosynthesis
Q. What is the significance of genetic variation in plant evolution?
  • A. It decreases adaptability
  • B. It increases susceptibility to diseases
  • C. It enhances survival and adaptability
  • D. It has no impact on evolution
Q. What is the significance of genetic variation in plant populations?
  • A. It decreases adaptability
  • B. It enhances survival and adaptability
  • C. It leads to uniformity in traits
  • D. It has no impact on evolution
Q. What is the significance of mycorrhizal associations in plant growth?
  • A. Increase in photosynthesis
  • B. Enhanced nutrient uptake
  • C. Reduction of transpiration
  • D. Promotion of flowering
Q. What is the significance of mycorrhizal associations in plant reproduction?
  • A. They enhance seed germination
  • B. They provide nutrients and water to the plant
  • C. They increase flower production
  • D. They prevent pollination
Q. What is the significance of mycorrhizal fungi in plant reproduction?
  • A. They produce seeds
  • B. They enhance nutrient uptake
  • C. They facilitate pollination
  • D. They increase leaf area
Q. What is the significance of photoperiodism in plants?
  • A. Regulating water loss
  • B. Controlling flowering time
  • C. Enhancing photosynthesis
  • D. Increasing root growth
Q. What is the significance of photosynthesis in the global carbon cycle?
  • A. It releases carbon dioxide
  • B. It sequesters carbon dioxide
  • C. It has no significance
  • D. It produces methane
Q. What is the significance of phytochemicals in plants for human health?
  • A. They are essential nutrients
  • B. They provide color to flowers
  • C. They have health-promoting properties
  • D. They are used for photosynthesis
Q. What is the significance of plant taxonomy in agriculture?
  • A. It helps in identifying pests
  • B. It aids in crop rotation
  • C. It allows for the classification of weeds
  • D. It assists in breeding programs
Q. What is the significance of seed dispersal in plant reproduction?
  • A. To increase competition among plants
  • B. To ensure genetic uniformity
  • C. To reduce the risk of predation
  • D. To spread offspring to new locations
Q. What is the significance of seed dormancy in plant reproduction?
  • A. To ensure immediate germination
  • B. To allow seeds to survive unfavorable conditions
  • C. To promote cross-pollination
  • D. To increase seed size
Q. What is the significance of terpenes in plants?
  • A. Photosynthesis
  • B. Aromatic properties
  • C. Nutrient storage
  • D. Water retention
Q. What is the significance of the 'denaturation' step in PCR?
  • A. To cool the reaction mixture
  • B. To separate the DNA strands
  • C. To synthesize new DNA strands
  • D. To add primers
Q. What is the significance of the 'Golden Rice' project?
  • A. It is a new variety of ornamental rice
  • B. It aims to combat vitamin A deficiency
  • C. It increases rice yield significantly
  • D. It is resistant to all pests
Q. What is the significance of the 'sticky ends' created by restriction enzymes?
  • A. They stabilize RNA
  • B. They allow for the easy joining of DNA fragments
  • C. They prevent mutations
  • D. They enhance PCR efficiency
Q. What is the significance of the 'sticky ends' in DNA cloning?
  • A. They prevent DNA degradation
  • B. They facilitate the ligation of DNA fragments
  • C. They enhance PCR efficiency
  • D. They stabilize RNA structures
Q. What is the significance of the 'sticky ends' in recombinant DNA technology?
  • A. They help in DNA replication
  • B. They facilitate the ligation of DNA fragments
  • C. They are used for PCR amplification
  • D. They stabilize the DNA structure
Q. What is the significance of the 'sticky ends' produced by some restriction enzymes?
  • A. They allow for easier ligation of DNA fragments
  • B. They prevent DNA degradation
  • C. They enhance PCR efficiency
  • D. They facilitate RNA transcription
Q. What is the significance of the 5' and 3' ends of a DNA strand?
  • A. They indicate the direction of replication
  • B. They determine the type of base pairs
  • C. They are sites for protein binding
  • D. They are involved in RNA splicing
Q. What is the significance of the 5' cap and poly-A tail in eukaryotic mRNA?
  • A. They are involved in DNA replication
  • B. They protect mRNA from degradation and assist in translation
  • C. They are sites for transcription initiation
  • D. They help in splicing introns
Q. What is the significance of the 5' cap and poly-A tail in mRNA?
  • A. They are involved in DNA replication
  • B. They protect mRNA from degradation and assist in translation
  • C. They are required for transcription initiation
  • D. They help in the splicing of introns
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