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PPSC MCQs

Punjab Public Service Commission β€” 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.
PPSC preparation illustration
61
Biology Medium

What is the term for the symbiotic relationship where both organisms benefit?

  • ACommensalism
  • BParasitism
  • CMutualism
  • DAmensalism
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Correct Answer: Option C β€” Mutualism
Explanation: Mutualism is a type of symbiotic relationship where both organisms involved benefit from their interaction such as the relationship between bees and flowers.
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62
Biology Medium

Which branch of biology deals with the study of viruses?

  • ABacteriology
  • BMycology
  • CParasitology
  • DVirology
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Correct Answer: Option D β€” Virology
Explanation: Virology is the branch of biology that studies viruses including their structure classification evolution mechanisms of infection and methods of control.
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63
Biology Easy

Which disease results from the inability to produce or use insulin effectively?

  • ADiabetes mellitus
  • BHypertension
  • CAnaemia
  • DAsthma
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Correct Answer: Option A β€” Diabetes mellitus
Explanation: Diabetes mellitus results from insufficient insulin production or ineffective insulin utilisation leading to persistently high blood glucose levels that can damage organs over time.
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64
Biology Medium

Which hormone regulates blood glucose levels by promoting its uptake by cells?

  • AGlucagon
  • BAdrenaline
  • CThyroxine
  • DInsulin
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Correct Answer: Option D β€” Insulin
Explanation: Insulin produced by the beta cells of the pancreas lowers blood glucose levels by promoting its uptake by body cells and stimulating its conversion to glycogen in the liver.
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65
Biology Medium

Which gland is called the master gland of the endocrine system?

  • AThyroid gland
  • BPituitary gland
  • CAdrenal gland
  • DPancreas
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Correct Answer: Option B β€” Pituitary gland
Explanation: The pituitary gland is called the master gland because it secretes hormones that regulate the activity of other endocrine glands including the thyroid adrenal and reproductive glands.
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66
Biology Medium

What is the chemical messenger secreted by endocrine glands into the bloodstream called?

  • AHormone
  • BEnzyme
  • CNeurotransmitter
  • DAntibody
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Correct Answer: Option A β€” Hormone
Explanation: Hormones are chemical messengers secreted by endocrine glands directly into the bloodstream and transported to target organs where they regulate physiological processes.
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67
Biology Medium

Which part of the brain controls vital involuntary functions such as breathing heart rate and blood pressure?

  • ACerebrum
  • BCerebellum
  • CThalamus
  • DMedulla oblongata
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Correct Answer: Option D β€” Medulla oblongata
Explanation: The medulla oblongata located in the brainstem regulates vital involuntary functions including breathing heart rate blood pressure and reflexes essential for survival.
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68
Biology Medium

Which part of the human brain controls balance and coordinates muscular movement?

  • ACerebellum
  • BCerebrum
  • CMedulla oblongata
  • DThalamus
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Correct Answer: Option A β€” Cerebellum
Explanation: The cerebellum coordinates voluntary movements maintains balance and posture and fine-tunes motor activities by processing information from the sensory systems and other brain areas.
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69
Biology Medium

Which part of the human brain is responsible for voluntary movement and higher cognitive functions?

  • ACerebellum
  • BMedulla oblongata
  • CCerebrum
  • DHypothalamus
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Correct Answer: Option C β€” Cerebrum
Explanation: The cerebrum is the largest part of the human brain responsible for voluntary movement perception memory language reasoning and other higher cognitive functions.
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70
Biology Medium

What is the term for organisms that cannot make their own food and must consume other organisms?

  • AAutotrophs
  • BHeterotrophs
  • CProducers
  • DChemotrophs
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Correct Answer: Option B β€” Heterotrophs
Explanation: Heterotrophs are organisms that cannot synthesise their own food and must obtain energy and organic nutrients by consuming other organisms and include animals fungi and most bacteria.
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