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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مندرجہ ذیل میں سے کون سی سچی مچھلی ہے؟
Answer: Both A and B
Explanation Sea fish are true fishes, belonging to the class Pisces with gills and fins . Dogfish is a true fish as it belongs to the class Chondrichthyes (cartilaginous fish) . Jellyfish is a cnidarian , and Cuttlefish is a mollusk , so neither are true fish.
سارا انڈے کو تقسیم کرنے کے بجائے زردی کے اوپری حصے میں پائے جانے والے درار ، کہا جاتا ہے کہ وہ _____ ہے؟
Answer: Meroblastic
Explanation Meroblastic cleavage occurs in eggs with a large amount of yolk, where only a part of the egg undergoes division. This type of cleavage is seen in birds, reptiles, and fish.
مییوسس میں عبور کرنا ______ میں ہوتا ہے؟
Answer: Pachytene
Explanation Crossing over occurs in the pachytene stage of Prophase I in meiosis, where homologous chromosomes exchange genetic material. This process increases genetic variation in offspring.
معدے کے دوران ______ بنتا ہے اور آرکینٹرون کو معدے کے بیرونی حصے سے جوڑتا ہے۔
Answer: Blastopore
Explanation The blastopore is an opening formed during gastrulation that connects the developing archenteron to the outside of the gastrula. Its fate determines whether the organism has protostome or deuterostome development.
انحطاط پذیر ماحولیاتی نظام میں ضروری مواد شامل کرنے کے لیے جانداروں کے استعمال کو کیا کہتے ہیں؟
Answer: Augmentation
Explanation Augmentation refers to the use of organisms to add essential materials (like nutrients) to degraded ecosystems, enhancing their recovery and productivity. It focuses on improving the ecosystem's health by introducing beneficial organisms or resources that were depleted.
بابون اور چمپینزی مخصوص رویے کی نشاندہی کرتے ہیں تاکہ وہ گھنے جنگلات سے گزر سکیں اور جنہیں ______ کہا جاتا ہے؟
Answer: Brachiation
Explanation Brachiation is a type of locomotion where primates swing from tree to tree using their arms. It commonly seen in species like chimpanzees and baboons . This behavior helps them navigate through thick forest environments efficiently.
مچھلی کی گل میں انسداد کرنٹ کا تبادلہ درج ذیل میں سے کس کو زیادہ سے زیادہ کرنے میں مدد کرتا ہے؟
Answer: Diffusion
Explanation Countercurrent exchange in fish gills ensures that blood and water flow in opposite directions. It maximizing the diffusion of oxygen into the blood. This mechanism maintains a concentration gradient. It allowing for efficient gas exchange across the gill membranes.
پٹھوں کو ______ کے ذریعہ ہڈیوں سے جوڑا جاتا ہے؟
Answer: Tendons
Explanation Tendons are strong, flexible tissues that connect muscles to bones , enabling movement. They transmit the force generated by muscle contractions to bones , facilitating joint movement.
وہ مچھلیاں جن کی نقل مکانی میٹھے پانی تک محدود ہے _______ کہلاتی ہے؟
Answer: Potamodramous
Explanation Potamodromous fishes migrate within freshwater systems. It typically moving between rivers or lakes for spawning or feeding. Unlike other migratory fish , their movement is confined to freshwater environments.
ہائگروسیپٹرز ہوا کے ______ مواد کا پتہ لگاتے ہیں۔
Answer: Water
Explanation Hygroreceptors detect the water content or humidity in the air. They are sensitive to changes in moisture levels . It help organisms respond to environmental conditions.
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