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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پرمین معدومیت نے ______ کے اختتام کو نشان زد کیا؟
Answer: Paleozoic Era
Explanation The Permian extinction , around 155 million years ago , marked the end of the Paleozoic Era. It was the largest mass extinction in Earth's history , wiping out over 90% of marine species.
کھروں والے جانوروں جیسے گھوڑے کی ابتدا _____ میں ہوئی ہے؟
Answer: Eocene epoch
Explanation The earliest horse-like hoofed animals, such as Eohippus (Hyracotherium ). It appeared during the Eocene epoch (about 56–33.9 million years ago). These early horses were small, with multiple toes , later evolving into modern hoofed horses.
Answer: Presence of keratinized layers reducing water loss
Explanation Vertebrate epidermis has keratin , a waterproof protein. Keratinized layers protect agains t desiccation (water loss) . This adaptation is crucial for life on land. Invertebrates commonly rely on chitin , not keratin.
اگلی نسل کے جین پول میں ایک فرد کیا حصہ ڈالتا ہے؟
Answer: Relative fitness
Explanation Relative fitness measures the contribution of an individual to the gene pool of the next generation. It reflects the individual's reproductive success compared to others in the population.
ایک نوع صرف درختوں کے سوراخوں میں رہتی ہے۔ دوسری نسل صرف ندیوں میں رہتی ہے۔ ان دو پرجاتیوں کے درمیان کس قسم کی رکاوٹ موجود ہے؟
Answer: Habitat
Explanation A habitat barrier exists because the two species occupy different environments ( tree holes vs. streams ). This prevents them from interacting and reproducing, leading to reproductive isolation.
Answer: Respiration
Explanation Water vascular system in echinoderms used for Respiration *** The Water Vascular system in echinoderms is also used for locomotion, food, and waste transportation. The water vascular system helps in respiration, as the gaseous exchange takes place on the thin wall of feet tubes. The system consists of a central ring canal and radial canals extending along each arm
Answer: Sponges
Explanation Mesohyl is a gelatinous, protein-rich layer found in sponges, acting as a connective tissue b etween their inner and outer layers.
زرافہ زوجیوگرافیکل ______ کی تقسیم کی نمائش کرتا ہے۔
Answer: Endemic
Explanation Giraffes exhibit endemic distribution , as they are native to and primarily found in sub-Saharan Africa. Their distribution is restricted to specific regions with suitable savanna habitats.
وفاقی علاقے میں کتنے ہیکٹر کا احاطہ کیا گیا ہے؟
Answer: 7000 ha
Explanation The federal territory covers 7,000 hectares (ha). This includes protected areas managed for biodiversity conservation and other ecological purposes.
ان میں سے سب سے چھوٹی اکائی کون سی ہے جس پر قدرتی انتخاب براہ راست کام کرتا ہے؟
Answer: Population
Explanation Natural selection directly acts on populations . As they consist of individuals with varying traits that affect survival and reproduction. Over time, advantageous traits become more common in the population , driving evolutionary change.
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