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.
جو سمندری جانوروں جیسے سیل اور وہیل کو چھتیس سے اڑتیس سینٹی گریڈ کے جسم کا درجہ حرارت برقرار رکھنے میں مدد کرتا ہے؟
A. None of these
B. Blubber
C. Brown fat
D. Ammonia
Check answer and explanation
Answer: Blubber
Explanation Blubber is a thick layer of fat found in marine animals like seals and whales . It helps insulate their bodies and maintain a stable body temperature . It provides buoyancy and protection while conserving heat in cold ocean waters.
Explanation In a vertebrate, a reflex action is induced by a sensory nerve. A sensory nerve detects the stimulus, which triggers the signal to the spinal cord, l eading to the motor neuron response in a reflex action.
جو جگر میں زہروں اور ادویات کے سم ربائی کی وجہ سے وافر مقدار میں موجود ہے؟
A. None of these
B. Golgi bodies
C. RER
D. SER
Check answer and explanation
Answer: SER
Explanation Smooth Endoplasmic Reticulum (SER) is abundant in liver cells. This aiding in the detoxification of poisons and drugs. It also plays a role in lipid metabolism and calcium storage.
اخراج کرنے والی مصنوعات جس کے خاتمے کے لیے کم سے کم پانی کی ضرورت ہوتی ہے ______ ہے؟
A. Ammonia
B. Urine
C. Uric Acid
D. None of these
Check answer and explanation
Answer: Uric Acid
Explanation Uric acid is excreted as a paste or solid , requiring minimal water for elimination. It is common in birds, reptiles, and insects to conserve water.
پرندوں کے ذریعہ پنکھوں کو بہانا ______ کہا جاتا ہے؟
A. None of these
B. Molting
C. Shedding
D. Replacing
Check answer and explanation
Answer: Molting
Explanation Molting refers to the natural process where birds shed old feathers and replace them with new ones. This process is essential for maintaining healthy feathers and insulation.
جب پریزیگوٹک رکاوٹیں موجود نہیں ہیں اور ہائبرڈ زائگوٹ تیار کرنے میں ناکام رہتے ہیں، تو حالت _____ ہے؟
A. Hybrid inviability
B. Hybrid sterility
C. Hybrid breakdown
D. None of these
Check answer and explanation
Answer: Hybrid inviability
Explanation Hybrid inviability occurs when the hybrid zygote forms but fails to develop into a viable organism. This is due to genetic incompatibilities between the two parent species . It preventing normal development.
بیرونی ملک سے متعارف کرائے جانے والے کسی پودے یا جانور کو _____ کہا جاتا ہے؟
A. None of these
B. Endemic
C. Extinct
D. Exotic
Check answer and explanation
Answer: Exotic
Explanation Exotic species are plants or animals introduced from foreign countries or regions. These species may disrupt local ecosystems and outcompete native species in their new environment.
Explanation Planula is not a larva of sponges. It is the larval stage of cnidarians like jellyfish and corals . Sponge larvae include Amphiblastula and Stomogastrula , which develop into adult sponges.
ہر سینٹرومیر پر کروموسومل ڈی این اے کے مخصوص حصوں سے وابستہ پروٹین کا ڈھانچہ؟ _____
A. None of these
B. Kinetochore
C. Centromere
D. Centriole
Check answer and explanation
Answer: Kinetochore
Explanation The kinetochore is a protein structure located at the centromere of a chromosome. It facilitates the attachment of spindle fibers during cell division , ensuring proper chromosome segregation.