SPSC LECTURER ZOOLOGY PAST PAPERS 2000 TO TILL DATE
Zoology 5 years Past Papers Click here
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
مندرجہ ذیل میں سے کون سا فوڈ چین ہے؟
Energy cycle
Grazing food chain
Water cycle
None of these
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Explanation
A grazing food chain starts with producers (plants, algae) and moves through herbivores (primary consumers) to carnivores (secondary/tertiary consumers) . It is a major pathway for energy flow in ecosystems.
واٹر پھیپھڑوں _____ میں پائے جاتے ہیں؟
Most of mammals
Most of fishes
Most of invertebrates
None of these
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Explanation
Water lungs , also known as respiratory trees. They are found in some marine invertebrates , especially sea cucumbers (Holothuroidea) . These structures help in respiration by extracting oxygen from water.
پیشاب مثانے برانن _____ میں موجود ہے؟
Birds
Snakes
Both A & B
None of these
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Explanation
Birds develop a urinary bladder during embryonic stages, but it is usually absent in adults. Snakes lack a urinary bladder entirely, as they excrete nitrogenous waste mainly in solid or semi-solid form.
Head, Neck, Tail
Head and Tail
Head, Neck, Middle piece, Tail
None of these
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Explanation
Head – Contains the nucleus and acrosome for fertilization. Neck – Connects the head to the middle piece and contains centrioles. Middle piece – Packed with mitochondria to provide energy for movement. Tail – Propels the sperm forward for fertilization.
مندرجہ ذیل میں سے کون نیماتود پرجیوی نہیں ہے؟
Schistosoma
Trichinella
Ascaris
None of these
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Explanation
Schistosoma is a trematode (fluke), not a nematode . It causes schistosomiasis in humans. Trichinella, Ascaris, and Dracunculus are all nematode (roundworm) parasites .
مندرجہ ذیل میں سے کس کے پاس ان کی زندگی کے چکر میں صرف پولپ اسٹیج ہے؟
Anthozoa
Hydrozoa
Scyphozoa
None of these
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Explanation
Anthozoa (e.g., corals and sea anemones) exist only in the polyp stage . Other cnidarians, like Hydrozoa and Scyphozoa , have both polyp and medusa stages in their life cycle.
ارتقاء کے لئے اہم تغیرات _____ ہیں؟
Somatic mutation
Genetic mutation
Both A & B
None of these
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Explanation
Genetic mutations occur in germ cells (sperm or egg) and can be passed to offspring, driving evolutionary changes . Somatic mutations affect only body cells and are not inherited , so they do not contribute to evolution.
پروٹین جو پنجوں ، گھوڑے کے کھروں اور ناخن میں جمع ہوتا ہے وہ _____ ہے؟
Keratin
Chitin
Collagen
None of these
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Explanation
Keratin is a structural protein found in claws, hooves, nails, hair, and feathers , providing strength and protection. Chitin is found in the exoskeleton of arthropods, not in vertebrate structures.
ڈارون کے نظریہ کا ایک اہم جز یہ ہے کہ ______؟
Acquired characteristics can be inherited
Inherited variations arise by mutations
Variations are never harmful
None of these
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Explanation
Darwin’s theory of natural selection states that variations occur randomly and beneficial variations help in survival and reproduction. Mutations and genetic recombination introduce new variations , which may be advantageous, neutral, or harmful .
آبی گیسٹروپڈس کی بنیادی خارج ہونے والی مصنوعات _____ ہے؟
Ammonia
Uric acid
Urea
None of these
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Explanation
Aquatic gastropods excrete ammonia directly into the water through diffusion, a process called ammonotelism . This method is efficient in water as ammonia is highly soluble and easily diluted.
