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 tissues is responsible for secondary growth in plants?
  • A. Cortex
  • B. Phloem
  • C. Vascular cambium
  • D. Epidermis
Q. Which of the following vaccines is a live attenuated vaccine?
  • A. Influenza vaccine
  • B. MMR (Measles, Mumps, Rubella) vaccine
  • C. Hepatitis B vaccine
  • D. Tetanus toxoid vaccine
Q. Which organ is primarily responsible for detoxifying chemicals in the human body?
  • A. Kidney
  • B. Liver
  • C. Heart
  • D. Lungs
Q. Which organ is primarily responsible for filtering blood in mammals?
  • A. Liver
  • B. Heart
  • C. Kidneys
  • D. Lungs
Q. Which organ produces bile that aids in the digestion of fats?
  • A. Pancreas
  • B. Liver
  • C. Gallbladder
  • D. Stomach
Q. Which organ produces bile?
  • A. Pancreas
  • B. Liver
  • C. Gallbladder
  • D. Stomach
Q. Which organelle is involved in the degradation of waste materials in plant cells?
  • A. Lysosome
  • B. Chloroplast
  • C. Vacuole
  • D. Mitochondrion
Q. Which organelle is involved in the detoxification of harmful substances in plant cells?
  • A. Lysosome
  • B. Peroxisome
  • C. Vacuole
  • D. Chloroplast
Q. Which organelle is known as the powerhouse of the cell?
  • A. Ribosome
  • B. Mitochondrion
  • C. Chloroplast
  • D. Endoplasmic reticulum
Q. Which organelle is primarily responsible for respiration in plant cells?
  • A. Chloroplast
  • B. Mitochondria
  • C. Nucleus
  • D. Endoplasmic reticulum
Q. Which part of the brain is responsible for regulating balance and coordination?
  • A. Cerebrum
  • B. Cerebellum
  • C. Brainstem
  • D. Thalamus
Q. Which part of the brain regulates the rate and depth of breathing?
  • A. Cerebrum
  • B. Cerebellum
  • C. Medulla oblongata
  • D. Thalamus
Q. Which part of the brain regulates the rate of breathing?
  • A. Cerebrum
  • B. Cerebellum
  • C. Medulla oblongata
  • D. Thalamus
Q. Which part of the brain regulates the respiratory rate?
  • A. Cerebrum
  • B. Cerebellum
  • C. Medulla oblongata
  • D. Thalamus
Q. Which part of the chloroplast contains the thylakoid membranes?
  • A. Stroma
  • B. Outer membrane
  • C. Inner membrane
  • D. Granum
Q. Which part of the chloroplast is responsible for the Calvin cycle?
  • A. Thylakoid membrane
  • B. Stroma
  • C. Granum
  • D. Chlorophyll
Q. Which part of the digestive system is primarily involved in water absorption?
  • A. Stomach
  • B. Small intestine
  • C. Large intestine
  • D. Esophagus
Q. Which part of the digestive system is primarily responsible for water absorption?
  • A. Mouth
  • B. Stomach
  • C. Small intestine
  • D. Large intestine
Q. Which part of the flower develops into a fruit after fertilization?
  • A. Stamen
  • B. Ovary
  • C. Petal
  • D. Sepal
Q. Which part of the flower develops into the fruit?
  • A. Stamen
  • B. Ovary
  • C. Petal
  • D. Sepal
Q. Which part of the flower is primarily responsible for attracting pollinators?
  • A. Stamen
  • B. Pistil
  • C. Petals
  • D. Sepals
Q. Which part of the flower is primarily responsible for reproduction?
  • A. Sepals
  • B. Petals
  • C. Stamens
  • D. Leaves
Q. Which part of the flower is responsible for attracting pollinators?
  • A. Sepals
  • B. Petals
  • C. Stamens
  • D. Carpels
Q. Which part of the flower is responsible for producing ovules?
  • A. Stamen
  • B. Pistil
  • C. Petal
  • D. Sepal
Q. Which part of the flower is responsible for producing pollen?
  • A. Stigma
  • B. Style
  • C. Anther
  • D. Ovary
Q. Which part of the heart is responsible for pumping blood to the lungs?
  • A. Left atrium
  • B. Right atrium
  • C. Left ventricle
  • D. Right ventricle
Q. Which part of the heart is responsible for pumping oxygenated blood to the body?
  • A. Right atrium
  • B. Left atrium
  • C. Right ventricle
  • D. Left ventricle
Q. Which part of the human digestive system is primarily involved in water absorption?
  • A. Stomach
  • B. Small intestine
  • C. Large intestine
  • D. Esophagus
Q. Which part of the plant cell is selectively permeable?
  • A. Cell wall
  • B. Cytoplasm
  • C. Cell membrane
  • D. Chloroplast
Q. Which part of the plant is often used to extract essential oils that have antimicrobial properties?
  • A. Roots
  • B. Leaves
  • C. Flowers
  • D. Seeds
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