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.

Continue your revision with related topics: 100 Most Repeated MCQs of EDS PDF MCQs, Alloy MCQs, Atmosphere MCQs, Basics of Every Day Science EDS MCQs, Biology MCQs, Botany MCQs, Branch of Science MCQs, Cell MCQs.

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Zoology: questions and answer review

Try each question before opening its answer. Record the concept behind each mistake and revisit it during your next practice session.

781. Which of the following is a characteristic of horny structures that do not shed off?

Check answer and explanation

Answer: Horns of cattle

Explanation Horny structures, like the horns of cattle, are made of keratin and do not shed off. Unlike antlers, which are shed annually, horns are permanent structures that continue to grow throughout the animal's life The other options—scales, feathers, and fur—are either shed or replaced regularly.

782. What percent solution of NaCl is considered isotonic to mammalian RBCs?

این سی ایل کا کون سا فیصد حل ستنداریوں کے آر بی سی کو آئسوٹونک سمجھا جاتا ہے؟

Check answer and explanation

Answer: 0.9%

Explanation A 0.9% NaCl solution is isotonic to mammalian red blood cells (RBCs). It prevents osmotic swelling or shrinking of RBCs during intravenous use.

783. Honey comprises ______ of ash contents.

شہد میں راکھ کے ______ مواد شامل ہوتے ہیں۔

Check answer and explanation

Answer: 0.05%

Explanation Honey contains about 0.05% ash . It represents the mineral content left after water and organic components are removed. This small percentage includes minerals like potassium, calcium, and magnesium.

784. ____ lack true tissues and organs level organization.

حقیقی ٹشوز اور اعضاء کی سطح کی تنظیم کی کمی ہے۔ _____

Check answer and explanation

Answer: Sponges

Explanation Sponges (Phylum Porifera) lack true tissues and organs, having a simple cellular organization . They rely on specialized cells , like choanocytes, for basic functions such as feeding and water circulation.

785. Which of the following is the primary cause of uterine prolapse in cattle?

مویشیوں میں بچہ دانی کی بنیادی وجہ مندرجہ ذیل میں سے کون ہے؟

Check answer and explanation

Answer: Difficult calving or dystocia

Explanation Uterine prolapse in cattle primarily occurs after difficult or prolonged calving , which weakens pelvic muscles and ligaments. It often follows straining and trauma during delivery, especially in cases of large calf or twin births.

786. Gas exchange in spiders occurs in respiratory organs called ______?

مکڑیوں میں گیس کا تبادلہ سانس کے اعضاء میں ہوتا ہے جسے ______ کہتے ہیں؟

Check answer and explanation

Answer: Book Lungs

Explanation Spiders use book lungs . They are stacked, plate-like structures, for gas exchange . These structures maximize the surface area for efficient oxygen absorption.

787. Primary function of respiratory system is _______?

سانس کے نظام کا بنیادی کام _______ ہے؟

Check answer and explanation

Answer: Gas exchange

Explanation The primary function of the respiratory system is gas exchange . It allowing oxygen intake and carbon dioxide expulsion. This process occurs in the lungs through alveoli. It ensuring oxygen supply to the blood.

788. First attempt to divide the earth on the basis of animal distribution was made by ______?

زمین کو جانوروں کی تقسیم کی بنیاد پر تقسیم کرنے کی پہلی کوشش ______ نے کی تھی؟

Check answer and explanation

Answer: Dr. P.L. Sclater

Explanation Dr. P.L. Sclater was the first to divide the earth into zoogeographical regions based on animal distribution in 1858. He proposed six regions: Palaearctic, Nearctic, Ethiopian, Oriental, Australian, and Neotropical.

789. Less toxic fumigant to the insects is ______?

کیڑوں کے لیے کم زہریلا فومیگینٹ ______ ہے؟

Check answer and explanation

Answer: Tetrachloride

Explanation The less toxic fumigant to insects is Carbon Tetrachloride. Carbon tetrachloride is relatively less toxic compared to stronger fumigants like methyl bromide . It has been used in stored grain pest management but is less common today due to environmental concerns.

790. In mammals, which response is known as fever, but it is known to raise body temperature in other bacterially infected animals, including lizards, fishes, and cockroaches?

ستنداریوں میں، کون سا ردعمل بخار کے نام سے جانا جاتا ہے، لیکن یہ دوسرے بیکٹیریا سے متاثرہ جانوروں میں جسم کے درجہ حرارت کو بڑھانے کے لیے جانا جاتا ہے، بشمول چھپکلی، مچھلیاں اور کاکروچ؟

Check answer and explanation

Answer: A change in thermostat “set-point”

Explanation During fever, the set-point in the hypothalamus is raised, triggering mechanisms to increase body temperature. This higher temperature helps the body fight infections by inhibiting pathogen growth and enhancing immune function.

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