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PPSC MCQs

Punjab Public Service Commission — Complete MCQ Bank

94 Questions
Exam Preparation Guide

How to prepare for PPSC

PPSC examinations recruit candidates for Punjab government departments and commonly test general knowledge, current affairs, English and post-related subjects.

Punjab AffairsGeneral KnowledgeCurrent AffairsEnglish
Give special attention to Punjab geography, history and administration alongside the advertised post’s specialist syllabus.
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All Subjects Biology Chemistry Computer Science Current Affairs English Everyday Science General Knowledge Islamic Studies Mathematics Pakistan Studies Physics
71
Biology Medium

What is the term for organisms that can make their own food through photosynthesis?

  • ADecomposers
  • BConsumers
  • CHeterotrophs
  • DAutotrophs
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Correct Answer: Option D — Autotrophs
Explanation: Autotrophs are organisms that produce their own organic food from inorganic substances using energy from sunlight through photosynthesis or from chemicals through chemosynthesis.
Submitted by: PaperMCQs
72
Biology Medium

Which type of reproduction involves only one parent and produces genetically identical offspring?

  • ASexual reproduction
  • BBudding only
  • CCross-pollination
  • DAsexual reproduction
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Correct Answer: Option D — Asexual reproduction
Explanation: Asexual reproduction involves a single parent producing genetically identical offspring through processes such as binary fission budding fragmentation or vegetative propagation.
Submitted by: PaperMCQs
73
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
74
Biology Easy

Which scientist proposed the theory of evolution by natural selection?

  • AGregor Mendel
  • BLouis Pasteur
  • CCharles Darwin
  • DAristotle
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Correct Answer: Option C — Charles Darwin
Explanation: Charles Darwin proposed the theory of evolution by natural selection in his 1859 book On the Origin of Species explaining how species change over generations through differential reproduction.
Submitted by: PaperMCQs
75
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
76
Biology Medium

Which vitamin is essential for the clotting of blood?

  • AVitamin A
  • BVitamin C
  • CVitamin E
  • DVitamin K
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Correct Answer: Option D — Vitamin K
Explanation: Vitamin K is essential for blood clotting as it activates several clotting factors in the coagulation cascade and its deficiency can lead to excessive bleeding.
Submitted by: PaperMCQs
77
Biology Easy

What is the largest organ in the human body?

  • ASkin
  • BLiver
  • CLungs
  • DHeart
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Correct Answer: Option A — Skin
Explanation: The skin is the largest organ of the human body covering the entire external surface and functions as a protective barrier regulating temperature and enabling sensation.
Submitted by: PaperMCQs
78
Biology Easy

Which organ in the human body is responsible for pumping blood throughout the body?

  • AHeart
  • BLungs
  • CLiver
  • DKidney
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Correct Answer: Option A — Heart
Explanation: The heart is a muscular organ that pumps blood throughout the body via the circulatory system supplying oxygen and nutrients to tissues and removing waste products.
Submitted by: PaperMCQs
79
Biology Easy

What is the scientific study of heredity and genetic variation called?

  • AEcology
  • BBiochemistry
  • CGenetics
  • DCytology
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Correct Answer: Option C — Genetics
Explanation: Genetics is the branch of biology that studies heredity and genetic variation in organisms exploring how traits are passed from parents to offspring through genes.
Submitted by: PaperMCQs
80
Biology Medium

Which blood group is known as the universal recipient?

  • AO negative
  • BAB positive
  • CA positive
  • DB positive
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Correct Answer: Option B — AB positive
Explanation: AB positive blood group is the universal recipient because individuals with this blood type can receive blood from donors of any ABO and Rh blood group.
Submitted by: PaperMCQs
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