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.
Explanation In animals, the digestive system develops primarily from the endoderm germ layer. This innermost layer forms the lining of the gastrointestinal tract and also contributes to the development of other related organs.
نر شہد کی مکھی کی بالغ عمر کا دورانیہ ______ سے ہے؟
A. 7-8 Week
B. None of these
C. 7-9 Week
D. 6-7 Week
Check answer and explanation
Answer: 7-8 Week
Explanation The total adult lifespan of a male honey bee (drone) ranges from about 7 to 8 weeks. Drones die shortly after mating with the queen. Their primary role is reproduction .
جانور _____ کی شکل میں نائٹروجن کا استعمال کرتے ہیں؟
A. Proteins
B. None of these
C. Nitrites
D. Nitrates
Check answer and explanation
Answer: Proteins
Explanation Animals cannot use atmospheric nitrogen directly; they obtain nitrogen by consuming proteins in food. These proteins are broken down into amino acids, which are used for growth and repair of body tissues.
Explanation The phylum that developed the first true coelom i s Annelida. A true coelom is a fluid-filled body cavity completely lined by mesoderm, Annelida (segmented worms) are considered the first phylum to have evolved this feature.
جسم میں اضطراری عمل کو ______ کے ذریعے کنٹرول کیا جاتا ہے؟
A. Medulla
B. None of these
C. Frontal lob
D. Spinal cord
Check answer and explanation
Answer: Spinal cord
Explanation The central nervous system (CNS) controls reflex actions. Reflex actions are quick, involuntary responses to a stimulus that don't require prior thought. Examples of reflex actions include blinking and the withdrawal of a body part from a hot object.
ملکہ شہد کی مکھی کو _________ کے لیے ڈھال لیا گیا ہے؟
A. Controlling other bees
B. None of these
C. Rearing the young’s
D. Laying eggs
Check answer and explanation
Answer: Laying eggs
Explanation The queen honeybee's primary role is reproduction; she lays thousands of eggs to sustain the colony. Her physiology, including a larger abdomen, is adapted to support continuous egg production.
مندرجہ ذیل کو سیل کے اندر سے باہر سے معلومات پہنچا کر جانوروں کے خلیے کے رویے کے ضابطے میں حصہ لینے کے بارے میں سوچا جاتا ہے؟
A. Gap junctions
B. Integrins
C. Nucleus
D. None of these
Check answer and explanation
Answer: Integrins
Explanation Integrins are transmembrane proteins that mediate cell adhesion to the extracellular matrix and transmit signals into the cell. They regulate cell behavior by influencing processes like growth, movement, and survival.
Explanation The standard incubation period for a chicken egg is 21 days under optimal temperature and humidity. Hatching usually begins on day 21 if properly incubated.
زیادہ تر اینستھیٹیککس جی اے بی اے کی حوصلہ افزائی کرکے بے ہوشی پیدا کرتے ہیں ، اس عمل کو ________ آئنوں میں اضافے سے سہولت فراہم کی جاتی ہے۔
A. K+
B. Na+
C. Cl–
D. None of these
Check answer and explanation
Answer: Cl–
Explanation Most anesthetics enhance the action of GABA (an inhibitory neurotransmitter) by increasing Cl⁻ ion influx into neurons. This hyperpolarizes the neuron , making it less excitable and leading to unconsciousness.
تیل کے پھیلنے کے بعد ماحول کو صاف کرنے کا ایک طریقہ ______ کے استعمال سے ہوتا ہے؟
A. Bacteria
B. None of these
C. Algae
D. Viruses
Check answer and explanation
Answer: Bacteria
Explanation Certain bacteria , like Pseudomonas and Alcanivorax , break down oil into harmless substances. This process, called bioremediation , helps clean up oil spills naturally.
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