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 role do mycorrhizal fungi play in plant ecology?
  • A. They decompose organic matter
  • B. They provide nutrients to plants
  • C. They compete with plants for resources
  • D. They inhibit plant growth
Q. What role do mycorrhizal fungi play in plant health?
  • A. They decompose organic matter
  • B. They fix atmospheric nitrogen
  • C. They enhance nutrient absorption
  • D. They produce plant hormones
Q. What role do plant classifications play in conservation efforts?
  • A. They hinder conservation efforts
  • B. They help identify endangered species
  • C. They promote invasive species
  • D. They are irrelevant to conservation
Q. What role do plants play in the carbon cycle?
  • A. They release carbon dioxide during photosynthesis.
  • B. They absorb carbon dioxide and release oxygen.
  • C. They do not participate in the carbon cycle.
  • D. They only store carbon in their roots.
Q. What role do pollinators play in the evolution of flowering plants?
  • A. They increase genetic diversity
  • B. They decrease competition
  • C. They promote asexual reproduction
  • D. They limit species distribution
Q. What role do seed banks play in plant conservation?
  • A. They increase soil fertility
  • B. They store genetic diversity
  • C. They promote photosynthesis
  • D. They enhance pollination
Q. What role do T helper cells play in the immune response?
  • A. Directly kill infected cells
  • B. Help activate B cells and cytotoxic T cells
  • C. Produce antibodies
  • D. Engulf and digest pathogens
Q. What role do terpenes play in plant health and human medicine?
  • A. Photosynthesis
  • B. Aromatic properties
  • C. Nutrient absorption
  • D. Water retention
Q. What role do terpenes play in plant health?
  • A. Photosynthesis
  • B. Attracting pollinators
  • C. Water absorption
  • D. Nutrient storage
Q. What role does NADPH play in photosynthesis?
  • A. It stores energy
  • B. It acts as an electron donor
  • C. It is a byproduct
  • D. It helps in water splitting
Q. What role does RuBisCO play in photosynthesis?
  • A. It absorbs light
  • B. It fixes carbon dioxide
  • C. It produces ATP
  • D. It generates oxygen
Q. What role does the liver play in digestion?
  • A. Produces digestive enzymes
  • B. Stores bile
  • C. Absorbs nutrients
  • D. Detoxifies harmful substances
Q. What role does water play in the light reactions of photosynthesis?
  • A. Source of carbon
  • B. Source of electrons
  • C. Source of ATP
  • D. Source of glucose
Q. What role does water play in the light reactions?
  • A. It absorbs light
  • B. It provides electrons
  • C. It fixes carbon
  • D. It produces glucose
Q. What structure forms from the inner cell mass of the blastocyst?
  • A. Placenta
  • B. Amniotic sac
  • C. Embryo
  • D. Chorion
Q. What term describes an organism's genetic makeup?
  • A. Phenotype
  • B. Genotype
  • C. Allele
  • D. Locus
Q. What term describes the evolutionary process where two or more species influence each other's evolution?
  • A. Co-evolution
  • B. Convergent evolution
  • C. Divergent evolution
  • D. Adaptive radiation
Q. What term describes the evolutionary process where unrelated species evolve similar traits due to similar environmental pressures?
  • A. Convergent evolution
  • B. Divergent evolution
  • C. Adaptive radiation
  • D. Co-evolution
Q. What term describes the evolutionary process where unrelated species evolve similar traits?
  • A. Convergent evolution
  • B. Divergent evolution
  • C. Adaptive radiation
  • D. Co-evolution
Q. What term describes the evolutionary relationship between different plant species?
  • A. Phylogeny
  • B. Morphology
  • C. Taxonomy
  • D. Ecology
Q. What term describes the genetic makeup of an organism?
  • A. Phenotype
  • B. Genotype
  • C. Allele
  • D. Chromosome
Q. What term describes the process by which two species evolve in response to each other?
  • A. Convergent evolution
  • B. Divergent evolution
  • C. Co-evolution
  • D. Adaptive radiation
Q. What type of blood vessel is primarily responsible for nutrient and gas exchange?
  • A. Arteries
  • B. Veins
  • C. Capillaries
  • D. Arterioles
Q. What type of bond connects the sugar and phosphate groups in a DNA strand?
  • A. Hydrogen bond
  • B. Ionic bond
  • C. Covalent bond
  • D. Peptide bond
Q. What type of bond connects the sugar and phosphate groups in the DNA backbone?
  • A. Hydrogen bond
  • B. Ionic bond
  • C. Covalent bond
  • D. Peptide bond
Q. What type of bond holds the two strands of DNA together?
  • A. Ionic bonds
  • B. Covalent bonds
  • C. Hydrogen bonds
  • D. Peptide bonds
Q. What type of cell division is responsible for the growth of meristematic tissues?
  • A. Mitosis
  • B. Meiosis
  • C. Binary fission
  • D. Fragmentation
Q. What type of cell is responsible for photosynthesis in leaves?
  • A. Sclerenchyma
  • B. Collenchyma
  • C. Chlorenchyma
  • D. Meristematic
Q. What type of cells are primarily involved in the cell-mediated immune response?
  • A. B cells
  • B. Cytotoxic T cells
  • C. Antigen-presenting cells
  • D. Plasma cells
Q. What type of cells are primarily involved in the storage of starch in plants?
  • A. Sclerenchyma
  • B. Parenchyma
  • C. Collenchyma
  • D. Epidermal cells
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