Zoology MCQs - Everyday Science Practice | PakExamPoint
Practise Zoology MCQs in Everyday Science. Attempt multiple-choice questions, check answers and revise related subtopics.
Zoology MCQs and revision practice
Study Zoology through multiple-choice questions in Everyday Science. This subtopic contains 1568 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.
Use these Zoology MCQs to identify the facts, rules or methods you need to revise. Where an explanation is available, work through it and write down why your chosen option was correct or incorrect. Revisit difficult questions after reviewing your notes, then use exam mode for timed practice.
پانی کی کون سی خاصیت پانی کے جسم کے مستقل درجہ حرارت کو برقرار رکھتی ہے؟
A. Surface tension
B. None of these
C. Density
D. Specific heat
Check answer and explanation
Answer: Specific heat
Explanation Water's high specific heat capacity allows it to absorb or release large amounts of heat without significantly changing its temperature . This property helps maintain stable temperatures in aquatic environments, supporting life.
Explanation The aquarium was first invented in Japan , where fish-keeping practices date back centuries. It was initially developed to observe and display aquatic life for decorative and study purposes.
Explanation The Krebs cycle , also known as the citric acid cycle . It occurs in the mitochondria . It is a key part of aerobic respiration, producing ATP, NADH, and FADH₂ . It was discovered by Hans Krebs in 1937 .
Explanation There are approximately 5,300 species of mammals identified worldwide. Mammals are diverse, ranging from small bats to large whales , with various adaptations to different environments.
جزائر کے توازن کے ماڈل کے مطابق جزائر پر پرجاتیوں کے ختم ہونے کی شرح کس عنصر/عوامل پر منحصر ہے؟
A. Immigration rates
B. Distance of Island from mainland
C. All of the above
D. Size of Island
Check answer and explanation
Answer: All of the above
Explanation Immigration rates influence the arrival of new species, affecting species diversity on an island. The size and distance of the island from the mainland impact both extinction and immigration rates, determining equilibrium.
مختلف پرجاتیوں کے دو جانوروں کے مابین ایک ایسوسی ایشن جس میں ان دونوں کو فائدہ ہوتا ہے ، لیکن اگر وہ تیز ہوجاتے ہیں تو مر جاتے ہیں؟
A. Parasitism
B. Symbiosis
C. Commensalism
D. None of these
Check answer and explanation
Answer: Symbiosis
Explanation Symbiosis is a close and long-term biological interaction between two different species, where both benefit and are dependent on each other for survival . If separated , they may not survive, as seen in some mutualistic relationships like lichens (fungi and algae).
Explanation The Chinese are considered the pioneers of fish culture, practicing it over 4,000 years ago . They developed advanced techniques for breeding and cultivating fish like carp.
پلازموڈیم میں پری ایریٹروسائٹک سائیکل _____ میں ہوتا ہے؟
A. None of these
B. Plasma
C. Liver
D. Spleen
Check answer and explanation
Answer: Liver
Explanation The pre-erythrocytic cycle of Plasmodium occurs in the liver after the parasite enters the human body through a mosquito bite. In the liver , Plasmodium undergoes asexual replication before infecting red blood cells (erythrocytes).
Explanation Strict Natural Reserves are areas set aside for the protection of biodiversity and natural geological features, with very strict regulations prohibiting human activities to ensure minimal disturbance.
Explanation The bacterial cell wall is peptidoglycan , It is also known as murein or mucopeptide. This complex polymer of sugars and amino acids forms a rigid, cross-linked structure That protects the cell and is a target for antibiotics like penicillin.
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