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PPSC MCQs

Punjab Public Service Commission — Complete MCQ Bank

1,262 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
221
Biology Easy

Which scientist is known as the Father of Genetics?

  • ACharles Darwin
  • BGregor Mendel
  • CLouis Pasteur
  • DAristotle
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Correct Answer: Option B — Gregor Mendel
Explanation: Gregor Mendel is known as the Father of Genetics for his pioneering experiments on pea plants in the 1860s that established the fundamental laws of heredity and trait inheritance.
Submitted by: PaperMCQs
222
Biology Easy

What is the process by which organisms break down glucose to release energy?

  • ADigestion
  • BPhotosynthesis
  • CCellular respiration
  • DTranspiration
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Correct Answer: Option C — Cellular respiration
Explanation: Cellular respiration is the process by which organisms break down glucose in the presence of oxygen to produce ATP carbon dioxide and water releasing energy for cellular activities.
Submitted by: PaperMCQs
223
Biology Easy

Which pigment in plants absorbs sunlight for photosynthesis?

  • AChlorophyll
  • BMelanin
  • CHaemoglobin
  • DKeratin
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Correct Answer: Option A — Chlorophyll
Explanation: Chlorophyll is the green pigment found in chloroplasts of plant cells that absorbs sunlight primarily in the red and blue wavelengths to drive the process of photosynthesis.
Submitted by: PaperMCQs
224
Biology Easy

What is the process by which green plants make their own food using sunlight?

  • ARespiration
  • BTranspiration
  • CPhotosynthesis
  • DFermentation
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Correct Answer: Option C — Photosynthesis
Explanation: Photosynthesis is the process by which green plants use sunlight carbon dioxide and water to produce glucose and oxygen in chloroplasts through light-dependent and light-independent reactions.
Submitted by: PaperMCQs
225
Biology Medium

Who discovered the double helix structure of DNA?

  • ACharles Darwin and Gregor Mendel
  • BRobert Hooke and Anton van Leeuwenhoek
  • CJames Watson and Francis Crick
  • DLouis Pasteur and Robert Koch
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Correct Answer: Option C — James Watson and Francis Crick
Explanation: James Watson and Francis Crick discovered the double helix structure of DNA in 1953 using X-ray diffraction data from Rosalind Franklin and Maurice Wilkins.
Submitted by: PaperMCQs
226
Biology Easy

What is the full form of DNA?

  • ADeoxyribose Nucleic Acid
  • BDi-nitrogen Acid
  • CDinucleic Acid
  • DDeoxyribonucleic Acid
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Correct Answer: Option D — Deoxyribonucleic Acid
Explanation: DNA stands for Deoxyribonucleic Acid and is the molecule that carries the genetic instructions for the development functioning growth and reproduction of all known organisms.
Submitted by: PaperMCQs
227
Biology Medium

Which type of cell division produces gametes with half the chromosome number?

  • ABudding
  • BMeiosis
  • CMitosis
  • DBinary fission
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Correct Answer: Option B — Meiosis
Explanation: Meiosis is the type of cell division that produces four genetically diverse gametes each containing half the chromosome number of the parent cell ensuring genetic diversity in sexual reproduction.
Submitted by: PaperMCQs
228
Biology Easy

What is the process by which cells divide to produce two identical daughter cells?

  • AMeiosis
  • BBinary fission
  • CMitosis
  • DBudding
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Correct Answer: Option C — Mitosis
Explanation: Mitosis is the type of cell division that produces two genetically identical daughter cells from a single parent cell and is responsible for growth tissue repair and asexual reproduction.
Submitted by: PaperMCQs
229
Biology Easy

Which organelle is known as the powerhouse of the cell?

  • ANucleus
  • BRibosome
  • CMitochondria
  • DGolgi apparatus
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Correct Answer: Option C — Mitochondria
Explanation: Mitochondria are known as the powerhouse of the cell because they produce ATP through the process of cellular respiration providing energy for all cellular activities.
Submitted by: PaperMCQs
230
Biology Easy

What is the basic structural and functional unit of all living organisms?

  • ATissue
  • BOrgan
  • CNucleus
  • DCell
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Correct Answer: Option D — Cell
Explanation: The cell is the basic structural and functional unit of all living organisms as proposed in the cell theory formulated by Schleiden Schwann and Virchow in the 19th century.
Submitted by: PaperMCQs
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