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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عام مچھلی کے جسم کی نمائش درج ذیل میں سے کون سی ہے؟
Answer: Bilateral summitry
Explanation Fish exhibit bilateral symmetry . It means their body is divided into two mirror-image halves. This symmetry aids in streamlined movement and balanced swimming.
مندرجہ ذیل میں سے کون سا وہیل کا زمینی اجداد ہے؟
Answer: Pakicetus
Explanation Pakicetus is considered the terrestrial ancestor of whales. It representing the transition from land to water. It was a land-dwelling carnivorous mammal from the Eocene epoch . It showing early adaptations for aquatic life.
ہیموگلوبینوریا مندرجہ ذیل تمام بیماریوں میں ہوتا ہے سوائے اس کے کہ؟
Answer: Black quarter
Explanation Hemoglobinuria (presence of hemoglobin in urine due to intravascular hemolysis) is seen in: Piroplasmosis (Babesiosis): Protozoan parasites destroy RBCs. Bacillary hemoglobinuria (Caused by Clostridium haemolyticum): Toxins induce hemolysis. Post-parturient hemoglobinuria (Nutritional): Hypophosphatemia leads to RBC fragility. Exception Black quarter (Caused by Clostridium chauvoei): Primarily causes myonecrosis (muscle damage) and edema, not hemolysis or hemoglobinuria. Key Point : Black quarter affects muscles, while the others directly or indirectly cause RBC lysis.
قدرتی انتخاب آبادیوں میں ایلیل فریکوئنسی کو تبدیل کرتا ہے کیونکہ کچھ ______ زندہ رہتے ہیں اور دوسروں کے مقابلے میں زیادہ کامیابی سے دوبارہ پیدا ہوتے ہیں۔
Answer: Individuals
Explanation Natural selection acts on individuals, favoring those with traits that increase survival and reproduction. This leads to changes in allele frequencies in the population over generations.
کس قسم کے بیکٹیریا ڈینیٹریفیکیشن کے لیے ذمہ دار ہیں؟
Answer: Pseudomonas
Explanation Pseudomonas bacteria are responsible for denitrification, converting nitrates into nitrogen gas. This process reduces soil nitrogen and releases it into the atmosphere, completing the nitrogen cycle.
مچھلی کی خوراک: چربی کے ذرائع کے لیے اہم جزو _____ ہے؟
Answer: Vegetable oil
Explanation Vegetable oil is an important fat source in fish feed. It providing essential fatty acids for growth and health. It is commonly used because it is a cost-effective and reliable source of energy for fish.
دل کا پیس میکر ______ ہے؟
Answer: Sino-Atrial Node
Explanation The SA Node , is located in the right atrium. It is the pacemaker of the heart. It initiating electrical impulses that regulate heartbeat. It ensures the heart beats at a consistent and coordinated rhythm.
موٹر پروٹین کس قسم کے سیلولر ڈھانچے کے ساتھ تعامل کرکے خلیوں میں سالماتی حرکت فراہم کرتے ہیں؟
Answer: Cytoskeleton
Explanation Motor proteins like kinesin and dynein interact with the cytoskeleton . It particularly microtubules and actin filaments , to enable cellular motion. These interactions power processes like intracellular transport and cell division.
یوریھیلن جانور بیرونی ماحول میں نمکیات کی ایک وسیع رینج کو برداشت کرتے ہیں ______ تازہ سے نمکین۔
Answer: 0 – 35
Explanation Euryhaline animals can tolerate salinity levels ranging from 0 to 35 ppt (freshwater to saline conditions). This adaptability helps them survive in environments with varying salinity, such as estuaries .
ستنداریوں میں ایڈیپوز ٹشو _______ پایا جاتا ہے؟
Answer: Below the dermis
Explanation Adipose tissue in mammals is located below the dermis in the hypodermis (subcutaneous layer). It serves as an energy reserve, provides insulation, and cushions the body.
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