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 main function of stomata in plants?
  • A. Nutrient absorption
  • B. Gas exchange
  • C. Water storage
  • D. Support
Q. What is the main function of the Calvin cycle?
  • A. To produce ATP
  • B. To fix carbon dioxide
  • C. To absorb light
  • D. To release oxygen
Q. What is the main function of the cambium in plants?
  • A. Photosynthesis
  • B. Water transport
  • C. Growth in thickness
  • D. Nutrient storage
Q. What is the main function of the enzyme RuBisCO in photosynthesis?
  • A. Fixing carbon dioxide
  • B. Producing ATP
  • C. Splitting water
  • D. Generating NADPH
Q. What is the main function of the gallbladder?
  • A. Stores bile
  • B. Produces bile
  • C. Absorbs nutrients
  • D. Secretes digestive enzymes
Q. What is the main function of the light reactions in photosynthesis?
  • A. To produce glucose
  • B. To convert light energy into chemical energy
  • C. To release carbon dioxide
  • D. To absorb water
Q. What is the main function of the light reactions?
  • A. To produce glucose
  • B. To convert solar energy to chemical energy
  • C. To release carbon dioxide
  • D. To synthesize proteins
Q. What is the main function of the light-harvesting complexes?
  • A. To transport electrons
  • B. To absorb and transfer light energy
  • C. To fix carbon
  • D. To produce glucose
Q. What is the main function of the phloem in vascular plants?
  • A. Transport water
  • B. Transport nutrients
  • C. Transport sugars
  • D. Support structure
Q. What is the main function of the RuBisCO enzyme in photosynthesis?
  • A. To produce ATP
  • B. To fix carbon dioxide
  • C. To split water
  • D. To generate NADPH
Q. What is the main function of the skeletal system in vertebrates?
  • A. Production of hormones
  • B. Support and protection
  • C. Digestion of food
  • D. Respiration
Q. What is the main function of the stomach?
  • A. Absorption of nutrients
  • B. Mechanical and chemical digestion
  • C. Storage of bile
  • D. Production of insulin
Q. What is the main function of the thylakoid membrane?
  • A. Storage of glucose
  • B. Light absorption
  • C. Carbon fixation
  • D. Water splitting
Q. What is the main function of the xylem in vascular plants?
  • A. Transport of sugars
  • B. Transport of water and minerals
  • C. Photosynthesis
  • D. Storage of nutrients
Q. What is the main function of xylem in vascular plants?
  • A. Transport of nutrients
  • B. Transport of water
  • C. Photosynthesis
  • D. Storage of food
Q. What is the main gas transported by hemoglobin in red blood cells?
  • A. Carbon dioxide
  • B. Oxygen
  • C. Nitrogen
  • D. Hydrogen
Q. What is the main goal of phytoremediation?
  • A. To enhance plant growth
  • B. To clean up contaminated environments
  • C. To increase crop yield
  • D. To improve soil fertility
Q. What is the main goal of plant biotechnology in relation to climate change?
  • A. To create more ornamental plants
  • B. To develop crops that can withstand extreme conditions
  • C. To increase the number of plant species
  • D. To reduce plant growth rates
Q. What is the main goal of synthetic biology?
  • A. To understand natural biological systems
  • B. To create new biological parts and systems
  • C. To clone animals
  • D. To sequence genomes
Q. What is the main health benefit of consuming omega-3 fatty acids found in certain plants?
  • A. Improved digestion
  • B. Heart health
  • C. Bone strength
  • D. Skin hydration
Q. What is the main mode of transmission for the influenza virus?
  • A. Vector-borne
  • B. Airborne
  • C. Direct contact
  • D. Fecal-oral
Q. What is the main outcome of gene expression?
  • A. DNA replication
  • B. Protein synthesis
  • C. RNA degradation
  • D. Cell division
Q. What is the main product of the Calvin cycle?
  • A. Oxygen
  • B. ATP
  • C. Glucose
  • D. NADPH
Q. What is the main product of the light-dependent reactions of photosynthesis?
  • A. Glucose
  • B. Oxygen
  • C. NADPH
  • D. ATP
Q. What is the main purpose of a booster vaccine?
  • A. To initiate the immune response
  • B. To enhance the immune memory
  • C. To provide immediate protection
  • D. To replace the primary vaccine
Q. What is the main purpose of cloning in biotechnology?
  • A. To create genetically identical copies of an organism
  • B. To sequence the entire genome
  • C. To mutate genes
  • D. To analyze gene expression
Q. What is the main purpose of meristematic tissue in plants?
  • A. Storage of food
  • B. Growth and development
  • C. Transport of water
  • D. Photosynthesis
Q. What is the main purpose of photosynthesis?
  • A. To produce oxygen
  • B. To convert solar energy into chemical energy
  • C. To absorb nutrients
  • D. To release carbon dioxide
Q. What is the main purpose of plant classification in conservation efforts?
  • A. To increase biodiversity
  • B. To identify endangered species
  • C. To enhance agricultural yield
  • D. To promote ornamental gardening
Q. What is the main purpose of plant reproduction?
  • A. Growth
  • B. Survival
  • C. Genetic diversity
  • D. Photosynthesis
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