SPSC LECTURER ZOOLOGY PAST PAPERS 2000 TO TILL DATE
Zoology 5 years Past Papers Click here
چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
مندرجہ ذیل میں سے کون سا صرف کفالت میں پایا جاتا ہے؟
- Trichocysts
- Nematocysts
- Choanocytes
- None of these
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Explanation
Choanocytes (collar cells) are flagellated cells unique to sponges.It is responsible for creating water currents and filtering food particles.Nematocysts are found in cnidarians.Trichocysts are found in Paramecium.
میں ٹرکوسائسٹس پائے جاتے ہیں؟ ______
- Paramecium
- Amoeba
- Euglena
- None of these
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Explanation
Trichocysts are needle-like organelles found in Paramecium.It is used for defense and anchoring.
فایلم کولنٹریٹا _____ کی موجودگی کی خصوصیت ہے؟
- Nematocysts
- Notochord
- Water vascular system
- None of these
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Explanation
Coelenterates (Cnidaria) are aquatic animals known for their nematocysts (stinging cells) used for defense and capturing prey.They lack a notochord (present in chordates) and a water vascular system (found in echinoderms).
آر این اے _____ میں نہیں پایا جاتا ہے؟
- Ribosomes
- Cell membrane
- Nucleus
- None of these
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Explanation
RNA is present in the ribosomes, nucleus, and nucleolus, where it plays a role in protein synthesis and gene expression.The cell membrane does not contain RNA as it mainly consists of lipids and proteins.
کشیراتی گونڈس میں جراثیم کے خلیات ____ کے ذریعہ تیار کیے جاتے ہیں؟
- To synthesis DNA
- To synthesis RNA
- To Synthesis ATP
- None of these
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Explanation
Germ cells undergo DNA replication during meiosis to produce haploid gametes (sperm and egg cells) in vertebrate gonads.RNA and ATP synthesis are important for cellular function.
خون کے خلیات _____ میں اعلی کشیروں میں تشکیل پاتے ہیں؟
- Spleen
- Bone marrow
- Liver
- None of these
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Explanation
In higher vertebrates, bone marrow is the primary site for hematopoiesis (blood cell formation).The liver and spleen play a role in blood cell production during fetal development.But in adults, bone marrow is the main site.
مندرجہ ذیل میں سے کون صرف جانوروں میں ہوتا ہے؟
- Ethological isolation
- Mechanical isolation
- Sectional isolation
- None of these
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Explanation
Ethological isolation (also called behavioral isolation) occurs only in animals due to differences in mating behaviors, such as courtship rituals.Mechanical isolation can occur in both animals and plants due to structural differences preventing mating or pollination.
ایپیڈرمل گلیں _____ میں موجود ہیں؟
- Tailed amphibians
- Adult amphibians
- Adult fishes
- None of these
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Explanation
Epidermal gills are found in the larval stages of tailed amphibians (such as salamanders and newts).These gills help in respiration before the development of lungs.
سیسٹوڈس کو عام طور پر _____ کہا جاتا ہے؟
- Roundworms
- Tapeworms
- Flatworms
- None of these
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Explanation
Cestodes are a class of parasitic flatworms commonly known as tapeworms, which live in the intestines of vertebrates.They lack a digestive system and absorb nutrients directly through their body surface.
کربس سائیکل کو _____ بھی کہا جاتا ہے؟
- Citric acid cycle
- Urea cycle
- Glycolysis
- None of these
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Explanation
The Krebs cycle, also known as the citric acid cycle.It occurs in the mitochondria.It is a key part of aerobic respiration, producing ATP, NADH, and FADH₂.It was discovered by Hans Krebs in 1937.
