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51
Biology Medium

Which type of nutrition involves organisms that feed on dead and decaying organic matter?

  • ASaprotrophic
  • BAutotrophic
  • CHolozoic
  • DParasitic
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Correct Answer: Option A — Saprotrophic
Explanation: Saprotrophic nutrition involves organisms such as fungi and bacteria secreting digestive enzymes onto dead organic matter and absorbing the digested nutrients playing a key role in decomposition.
Submitted by: PaperMCQs
52
Biology Hard

What is the process by which the kidneys filter blood to form urine?

  • AUltrafiltration
  • BSecretion
  • CReabsorption
  • DDigestion
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Correct Answer: Option A — Ultrafiltration
Explanation: Ultrafiltration is the first process in urine formation where high pressure in the glomerulus forces water glucose salts and urea out of the blood into the Bowman's capsule.
Submitted by: PaperMCQs
53
Biology Medium

What is the functional unit of the kidney responsible for filtration of blood?

  • AGlomerulus
  • BLoop of Henle
  • CBowman's capsule
  • DNephron
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Correct Answer: Option D — Nephron
Explanation: The nephron is the basic structural and functional unit of the kidney responsible for filtering blood regulating water and electrolyte balance and producing urine.
Submitted by: PaperMCQs
54
Biology Hard

Which type of white blood cell produces antibodies against specific pathogens?

  • ANeutrophils
  • BB lymphocytes
  • CMonocytes
  • DEosinophils
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Correct Answer: Option B — B lymphocytes
Explanation: B lymphocytes or B cells are white blood cells that produce specific antibodies when activated by an antigen providing targeted humoral immunity against pathogens.
Submitted by: PaperMCQs
55
Biology Medium

What is the process by which white blood cells engulf and digest bacteria and foreign particles?

  • APhagocytosis
  • BEndocytosis
  • COsmosis
  • DPinocytosis
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Correct Answer: Option A — Phagocytosis
Explanation: Phagocytosis is the process by which phagocytes such as neutrophils and macrophages engulf and digest bacteria foreign particles and dead cells protecting the body from infection.
Submitted by: PaperMCQs
56
Biology Medium

Which type of immunity is present from birth and provides a non-specific first line of defence?

  • AAcquired immunity
  • BActive immunity
  • CPassive immunity
  • DInnate immunity
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Correct Answer: Option D — Innate immunity
Explanation: Innate immunity is the non-specific immune response present from birth providing the first line of defence through physical barriers inflammation and phagocytes against all pathogens.
Submitted by: PaperMCQs
57
Biology Hard

What is the scientific study of fungi called?

  • ABacteriology
  • BVirology
  • CMycology
  • DBotany
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Correct Answer: Option C — Mycology
Explanation: Mycology is the branch of biology dedicated to the scientific study of fungi including their genetics biochemistry ecology and taxonomy.
Submitted by: PaperMCQs
58
Biology Medium

What is the process by which species change over time through natural selection?

  • AAdaptation
  • BEvolution
  • CMutation
  • DSpeciation
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Correct Answer: Option B — Evolution
Explanation: Evolution is the process by which populations of organisms change over successive generations through natural selection mutation genetic drift and gene flow.
Submitted by: PaperMCQs
59
Biology Medium

What is the term for the variety of life on Earth including all species ecosystems and genetic variation?

  • AEvolution
  • BBiodiversity
  • CEcology
  • DTaxonomy
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Correct Answer: Option B — Biodiversity
Explanation: Biodiversity refers to the variety of life on Earth at all levels including genetic diversity species diversity and ecosystem diversity and is essential for ecosystem stability.
Submitted by: PaperMCQs
60
Biology Medium

What is the term for the genetic makeup of an organism?

  • APhenotype
  • BKaryotype
  • CGenotype
  • DGenome
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Correct Answer: Option C — Genotype
Explanation: Genotype refers to the complete set of genetic information or alleles present in an organism that determines its inherited traits and potential phenotypic characteristics.
Submitted by: PaperMCQs
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