SPSC 25 YEARS PAST PAPERS 2001 TO 2026
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
خلیوں میں سے کس میں آکسیجن کیریئر پروٹین ہیموگلوبن کی بڑی مقدار ہوتی ہے؟
- Macrophages
- Leucocytes
- Erythrocytes
- None of these
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Explanation
Erythrocytes (red blood cells) contain a large amount of hemoglobin, which carries oxygen in the blood.Hemoglobin binds oxygen in the lungs and transports it to tissues throughout the body.
سمندری اور میٹھے پانی کے جانوروں کے درمیان ایک بڑا فرق ______ میں ہے؟
- Toxicity of body fluids
- Mode of locomotion
- Productivity capacity
- None of these
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Explanation
A major difference between marine and freshwater animals lies in the toxicity of body fluids.As marine animals regulate high salt concentrations.While freshwater animals prevent excessive water absorption.This adaptation helps them maintain osmotic balance in their respective environments.
مندرجہ ذیل میں سے کون کاربوہائیڈریٹ نہیں ہے؟
- Cellulose
- Deoxyribose
- Hemoglobin
- None of these
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Explanation
Hemoglobin is not a carbohydrate.It is a protein responsible for oxygen transport in the blood.Cellulose, deoxyribose, and glycogen are carbohydrates with structural or energy storage functions.
کیڑوں میں ذائقہ کے اعضاء کو _____ کہا جاتا ہے؟
- Taste hairs
- Taste buds
- Taste filaments
- None of these
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Explanation
Taste hairs are the taste organs in insects.It is located on their mouthparts, antennae, or feet.These specialized sensory hairs detect chemical stimuli in the environment.
مندرجہ ذیل میں سے کس کو پھول جانور کہا جاتا ہے؟
- Obelia
- Jellyfish
- Sea anemone
- None of these
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Explanation
Sea anemones are called flower animals because they look like flowers.
They are marine animals that are part of the class Anthozoa, which means "flower animals" in ancient Greek.
They are cylindrical in shape.
They are attached to a substrate.
They are often brightly colored.
They can grow to be 1.8 to 10 cm in diameter.
The name "anemone" comes from the anemone flower.
ایک جیسے یا اوورلیپنگ والے علاقوں پر قابض دو یا زیادہ پرجاتیوں کو ______ کے نام سے جانا جاتا ہے؟
- Sispecies
- Sympatric
- Sibling species
- None of these
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Explanation
Sympatric species are two or more species occupying identical or overlapping geographical areas.They coexist in the same region but maintain distinct identities through reproductive isolation.
بیرونی معلومات کے مالیکیول _______ ہیں؟
- Hormones
- RNA
- mRNA
- None of these
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Explanation
Hormones are extrinsic information molecules.
As they are signaling molecules that regulate various physiological processes in the body.
کون سے ایک کوینزیم کا حلقہ ہے؟
- Ascorbic Acid
- Lipase
- Vitamin B₂
- None of these
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Explanation
Vitamin B₂ is a constituent of coenzymes.
Specifically in the form of FAD and FMN.
They are involved in redox reactions.
ڈی این اے سے وابستہ پائے جانے والے آئسومرز کی قسم _____ ہے؟
- Five
- One
- Two
- None of these
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Explanation
DNA exhibits structural isomerism, mainly in the form of tautomeric isomers (keto-enol forms) and optical isomers in nucleotide bases.These isomers affect base pairing and hydrogen bonding, influencing DNA stability and replication.
مندرجہ ذیل میں سے تمام پریمیٹ ہیں سوائے ______؟
- Human
- Chimpanzee
- Giraffe
- None of these
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Explanation
Primates include humans, chimpanzees, and gorillas.They have grasping hands, large brains, and forward-facing eyes.Giraffes belong to the order Artiodactyla, not Primates.They are known for their long necks and legs.
