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 is a key feature of monocots?
  • A. Two cotyledons
  • B. Parallel leaf venation
  • C. Vascular bundles in a ring
  • D. Taproot system
Q. Which of the following is a key feature of the phylum Chordata?
  • A. Notochord
  • B. Exoskeleton
  • C. Radula
  • D. Tentacles
Q. Which of the following is a key feature of the plant kingdom's classification?
  • A. Presence of chlorophyll
  • B. Ability to reproduce sexually
  • C. Formation of seeds
  • D. Presence of vascular tissue
Q. Which of the following is a limitation of using alcohol as a disinfectant?
  • A. It is effective against all pathogens
  • B. It evaporates quickly
  • C. It requires a specific concentration for effectiveness
  • D. It is non-toxic
Q. Which of the following is a limitation of using bleach as a disinfectant?
  • A. It is ineffective against viruses
  • B. It can corrode surfaces
  • C. It is too expensive
  • D. It requires a long contact time
Q. Which of the following is a limitation of using ethylene oxide for sterilization?
  • A. It is effective against spores
  • B. It requires long exposure times
  • C. It is non-toxic
  • D. It can be used for heat-sensitive items
Q. Which of the following is a limitation of using steam sterilization?
  • A. It is effective against all microorganisms
  • B. It requires specific temperature and pressure
  • C. It is safe for all materials
  • D. It is a quick process
Q. Which of the following is a major factor driving plant evolution in response to climate change?
  • A. Soil composition
  • B. Pollinator availability
  • C. Temperature and precipitation changes
  • D. Pest resistance
Q. Which of the following is a method of asexual reproduction in plants?
  • A. Pollination
  • B. Budding
  • C. Fertilization
  • D. Seed dispersal
Q. Which of the following is a method of asexual reproduction?
  • A. Budding
  • B. Fertilization
  • C. Internal fertilization
  • D. External fertilization
Q. Which of the following is a method of biocontrol using microbes?
  • A. Using chemical pesticides
  • B. Introducing beneficial nematodes
  • C. Applying synthetic fertilizers
  • D. Utilizing Bacillus thuringiensis
Q. Which of the following is a method of disinfection that uses high-energy radiation?
  • A. Chemical disinfection
  • B. Ultraviolet light
  • C. Autoclaving
  • D. Boiling
Q. Which of the following is a method of plant reproduction?
  • A. Photosynthesis
  • B. Pollination
  • C. Transpiration
  • D. Germination
Q. Which of the following is a method of seedless reproduction in plants?
  • A. Fertilization
  • B. Grafting
  • C. Cross-pollination
  • D. Seed germination
Q. Which of the following is a method of sterilization that uses dry heat?
  • A. Autoclaving
  • B. Incineration
  • C. Pasteurization
  • D. Filtration
Q. Which of the following is a method of sterilization that uses high-pressure steam?
  • A. Dry heat sterilization
  • B. Chemical vapor sterilization
  • C. Autoclaving
  • D. Radiation sterilization
Q. Which of the following is a physical method of sterilization?
  • A. Ethylene oxide gas
  • B. Autoclaving
  • C. Chlorine bleach
  • D. Hydrogen peroxide
Q. Which of the following is a potential application of stem cell therapy?
  • A. Regenerating damaged tissues
  • B. Producing vaccines
  • C. Gene editing
  • D. Creating transgenic animals
Q. Which of the following is a potential risk associated with genetically modified plants?
  • A. Increased biodiversity
  • B. Unintended effects on non-target species
  • C. Improved crop resilience
  • D. Enhanced nutritional value
Q. Which of the following is a potential risk of genetically modified organisms (GMOs)?
  • A. Increased crop yields
  • B. Reduced pesticide use
  • C. Unintended effects on non-target species
  • D. Enhanced nutritional content
Q. Which of the following is a primary function of the skeletal system?
  • A. Production of hormones
  • B. Support and protection
  • C. Digestion of food
  • D. Respiration
Q. Which of the following is a product of the Calvin cycle?
  • A. ATP
  • B. NADPH
  • C. Glucose
  • D. Oxygen
Q. Which of the following is a product of the dark reactions?
  • A. Oxygen
  • B. ATP
  • C. Glucose
  • D. NADPH
Q. Which of the following is a product of the light reactions that is used in the Calvin cycle?
  • A. Oxygen
  • B. Glucose
  • C. NADPH
  • D. Carbon dioxide
Q. Which of the following is a product of the light-dependent reactions that is used in the Calvin cycle?
  • A. Oxygen
  • B. NADPH
  • C. Glucose
  • D. RuBP
Q. Which of the following is a real-world application of understanding photosynthesis?
  • A. Improving crop yields
  • B. Developing new pigments
  • C. Creating artificial light sources
  • D. Enhancing soil quality
Q. Which of the following is a technique used to amplify DNA?
  • A. Gel electrophoresis
  • B. Polymerase chain reaction (PCR)
  • C. Southern blotting
  • D. Sanger sequencing
Q. Which of the following is a type of genetic variation that can occur in plants?
  • A. Mutation
  • B. Transcription
  • C. Translation
  • D. Replication
Q. Which of the following is a type of RNA that carries genetic information from DNA to the ribosome?
  • A. tRNA
  • B. mRNA
  • C. rRNA
  • D. snRNA
Q. Which of the following is an example of a mutation?
  • A. Color blindness
  • B. Height variation
  • C. Blood type
  • D. All of the above
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