Practise Zoology MCQs in Everyday Science. Attempt multiple-choice questions, check answers and revise related subtopics.
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.
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Answer: species diversity
Explanation Species diversity refers to the variety of species within a specific ecosystem, region, or the entire planet. It includes: Species richness - The number of different species in a given area. Species evenness - The relative abundance of each species in the area.
پائن اور یوکلپٹس پرجاتیوں کے شنک سے بیج جاری کرنے کے لئے کون سا ضروری ہے؟
Answer: Fire
Explanation Fire is necessary for species like pine and eucalyptus to release seeds from their cones, a process called serotiny . These species rely on fire to open their cones and release seeds for regeneration.
پیلوزوک دور کو ادوار کی درج ذیل تعداد میں تقسیم کیا جاتا ہے؟
Answer: 7
Explanation The Paleozoic Era is subdivided into seven periods: Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian. This era spans from about 541 to 252 million years ago.
نائٹروجن پودوں اور جانوروں میں _____ کی شکل میں پایا جاتا ہے؟
Answer: Proteins
Explanation Nitrogen is a key component of amino acids , the building blocks of proteins . Thus, in plants and animals , nitrogen mainly exists in the form of proteins .
مائیکرو فوسلز کا مطلب کیا ہے؟
Answer: Fossils of micro organisms
Explanation Microfossils are fossils of microscopic organisms such as bacteria, plankton, or spores. They require magnification to be studied due to their tiny size.
ایک ایسا عمل جس میں جانور اپنی تولیدی صلاحیت کو کسی دوسرے جاندار کے فائدے کے لیے قربان کرتا ہے کیا کہلاتا ہے؟
Answer: Altruism
Explanation Altruism is a behavior where an animal sacrifices its reproductive potential or resources for the benefit of another organism, often kin . This enhances the survival of shared genes, promoting evolutionary fitness indirectly.
اگر، ایک پرجاتی کے جین پول میں اوسطاً %46 لوکی ہیٹروزیگس ہیں، تو انواع کی اوسط ہم آہنگی _______ ہونی چاہیے؟
Answer: 54%
Explanation Homozygosity is the complement of heterozygosity; if heterozygosity is 46%, homozygosity is 54% . It represents the proportion of loci with identical alleles in the population.
رویے پر اعصابی کنٹرول کو ______ کہا جاتا ہے؟
Answer: Neuroethology
Explanation Neuroethology studies the nervous system's control of animal behavior in natural settings. It links neural mechanisms with specific behaviors, such as movement and communication.
بہاؤ میں توازن کبھی نہیں پہنچ پاتا اس طرح یہ مسلسل پھیلاؤ کی اجازت دیتا ہے۔ _____
Answer: Counter current
Explanation In counter-current flow , equilibrium is never reached, enabling constant diffusion of gases like oxygen . This mechanism maximizes efficiency in gas exchange, especially in fish gills.
آرگنو کلورائیڈز سب سے پہلے _______ کے طور پر دریافت ہوئے تھے؟
Answer: Acute poisons
Explanation Organo-chlorides were first discovered as acute poisons . It particularly due to their immediate toxic effects on animals and humans. They are now commonly known as pesticides . But their toxicity led to widespread concerns about their impact on wildlife and the environment.
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