EVERYDAY SCIENCE
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
سن سائیٹیئل تھیوری کس چیز کی وضاحت کرتی ہے؟
- Formation of coelom
- Symmetry of animal
- Origin of life
- Origin of metazoa
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Explanation
- Syncytial theory explains the origin of multicellular animals (metazoa).
- It suggests that metazoans evolved from a multinucleated single cell (syncytium).
- Cell membranes later formed around nuclei to create separate cells.
- It explains early evolution of multicellular organisms.
Last verified on 04-06-2026
مندرجہ ذیل میں سے کس جانور میں دوران خون نظام گیسوں کی ترسیل میں شامل نہیں ہوتا؟
- Mouse
- Dragonfly
- Trout
- Sparrow
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Explanation
- In dragonfly, the circulatory system does not transport gases.
- Gas exchange occurs through a tracheal system.
- Air directly reaches tissues through spiracles and tracheae.
- Blood is not involved in oxygen transport.
Last verified on 04-06-2026
پھیپھڑوں کی سب سے باریک اور سب سے زیادہ تعداد میں پائی جانے والی نالیاں کیا کہلاتی ہیں؟
- Bronchus
- Alveoli
- Bronchioles
- Hilum
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Explanation
- Bronchioles are the narrowest and most numerous air passages in lungs.
- They branch from bronchi and lead to alveoli.
- They help in controlling airflow in the lungs.
- They are an important part of the respiratory system.
Last verified on 04-06-2026
زائموجن خلیات کہاں پائے جاتے ہیں؟
- Stomach
- Kidney
- Brain
- Liver
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Explanation
- Zymogen cells are found in the stomach lining.
- They secrete inactive enzyme precursors called zymogens.
- These are activated into digestive enzymes in the stomach.
- They help in protein digestion.
Last verified on 04-06-2026
مندرجہ ذیل میں سے کون سی بیماری کیڑے کی وجہ سے ہوتی ہے؟
- Sickle-cell anemia
- Klinefelter's syndrome
- Ringworm
- Treichinosis
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Explanation
- Trichinosis is a disease caused by a parasitic worm.
- It is caused by Trichinella spiralis.
- It spreads through undercooked or infected meat.
- It affects muscles and digestive system in humans.
Last verified on 04-06-2026
سرخ خون کے خلیات اور آکسیجن کی کمی میں رہنے والے جانداروں میں عام طور پر کون سا مادہ جمع ہوتا ہے؟
- NADPH
- Pyruvate
- Phosphoenolpyravate
- Lactate
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Explanation
- Lactate is produced during anaerobic respiration.
- It accumulates in erythrocytes and microorganisms without oxygen.
- Glucose is broken down without full oxidation.
- This process is called lactic acid fermentation.
Last verified on 04-06-2026
مندرجہ ذیل میں سے کون سا جاندار حیاتیاتی روشنی پیدا کرتا ہے؟
- Physalia
- Jellyfish
- Cuttlefish
- All of these
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Explanation
- Jellyfish are bioluminescent organisms.
- They belong to Cnidaria, and some ctenophores also show light production.
- Bioluminescence means production of light by living organisms.
- It helps in defense, attraction, and communication.
Last verified on 04-06-2026
- ATCG
- TAGC
- AUCG
- GCTA
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Explanation
- RNA is formed from DNA during transcription.
- In RNA, thymine (T) is replaced by uracil (U).
- DNA base pairing rules are followed in complementary form.
- So TAGC in DNA becomes AUCG in RNA.
Last verified on 04-06-2026
کورونا وائرس کا نام کس وجہ سے رکھا گیا؟
- Due to their crown-like projections
- Due to their leaf-like projections
- Due to their surface structure of bricks
- None of these
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Explanation
- Coronavirus is named due to its crown-like appearance.
- The virus has spike proteins on its surface.
- These spikes resemble a “crown” (corona in Latin).
- This structure helps the virus attach to host cells.
Last verified on 04-06-2026
نطفہ خلیات بننے کے بعد زیادہ تر کہاں ذخیرہ ہوتے ہیں؟
- Urethra
- Seminal vesicles
- Epididymis
- Prostate
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Explanation
- After production, sperm cells are stored and matured in the epididymis.
- It is located on the testis.
- It helps sperm gain motility and fertilizing ability.
- It acts as a temporary storage site for sperm.
Last verified on 04-06-2026
