PPSC PAST PAPERS EVERYDAY SCIENCE MCQS 2026
پیپر میں جانے سے
پہلے یہ سوالات و سلیبس ایک بار ضرور پڑھ کر جائیں
PPSC 25
years Past Papers Click here
چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
- 1665
- 1676
- 1683
- 1680
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Explanation
Antonie van Leeuwenhoek first observed yeast cells using his single-lens microscope in 1680.
- Adaptation to life
- Origin of life
- New species origin
- Natural selection
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Explanation
Darwin did not propose the chemical origin of life.
He suggested life adapted over time from simple forms.
His “Origin of Species” focuses on evolution and natural selection.
Explains how species diversify and adapt.
The chemical origin of life is studied separately in abiogenesis.
Last updated question 17-02-2026
کم از کم رقبہ وہ رقبہ ہے جہاں کسی نوع کی موجودگی ہوتی ہے؟
- Representative
- Constant
- Decline
- Increase dense
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Explanation
Minimal area is the smallest area that can support all species of a community.
It ensures a representative sample of species composition.
Used in ecology to study plant communities and species diversity.
Smaller than this area, some species may be missed.
Helps in making accurate ecological surveys and vegetation mapping.
Last updated question 17-02-2026
تمام گیسوں میں کون سی گیس سب سے ہلکی ہے؟
- Hydrogen
- Nitrogen
- Oxygen
- None of these
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Explanation
- Hydrogen and helium are the two lightest gases.
- Helium is the second most abundant element in the universe, after hydrogen.
- Helium has monatomic molecules.
- It is the lightest of all gases except hydrogen.
- Hydrogen is the lightest gas known.
- It provides the maximum lift for balloons due to its very low density.
Last updated question 17-02-2026
پاکستان کا قومی ممالیہ کون سا ہے؟
- Markhor
- Snow Leopard
- Indus Dolphin
- Chinkara
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Explanation
The Markhor is the national mammal of Pakistan.
It is a wild goat species found in northern mountainous regions.
It has distinctive twisted horns.
The animal is endangered due to hunting.
Scientific classification
- Kingdom: Animalia
- Phylum: Chordata
- Class: Mammalia
- Order: Artiodactyla
- Family: Bovidae
- Subfamily: Caprinae
- Genus: Capra
- Species: C. falconeri
Last updated question 17-02-2026
ہمنگ برڈ کی عارضی غیر فعالیت تاکہ توانائی بچائی جا سکے، کیا کہلاتی ہے؟
- Hibernation
- Torpor
- Aestivation
- Migration
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Explanation
- Torpor is a short-term state of reduced metabolic activity.
- Hummingbirds use it to conserve energy at night.
- Their body temperature drops significantly.
- It helps them survive food scarcity.
- It is different from long-term hibernation.
Last updated question 17-02-2026
مچھلیوں میں بنیادی لمفائیڈ عضو کون سا ہے؟
- Spleen and liver
- Kidney and thymus
- Gills and heart
- Pancreas and intestine
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Explanation
- The primary lymphoid organs in teleost fishes are the thymus and the anterior kidney (or pronephros).
- In fish, the kidney acts as a major hematopoietic organ.
- The thymus helps in T-cell development.
- These organs support immunity.
- Fish lack bone marrow like mammals.
- Diploid sporophyte
- Haploid gametophyte
- Embryo stage
- Spore case
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Explanation
- Prothallus is the gametophyte stage in ferns.
- It develops from a spore.
- It is haploid in nature.
- It produces male and female gametes.
- Fertilization occurs on the prothallus.
- Structure: It is a small, typically heart-shaped (cordate), and flat thallus.
روشنی میں فوتوسنتھیسز زیادہ تر کس کے ذریعے ہوتا ہے؟
- C4 plants
- CAM plants
- C3 plants
- Algae
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Explanation
Photosynthesis in light is mainly performed by C3 plants
They form a 3-carbon compound (3-PGA).
They constitute approximately 95% of the world's total plant biomass.
These plants include the vast majority of trees, shrubs, and major food crops such as rice, wheat, and soybeans.
انجیوسپرمز کس دور میں پیدا ہوئے؟
- Jurassic period
- Triassic period
- Cretaceous period
- Permian period
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Explanation
- Angiosperms are flowering plants.
- They first appeared in the Cretaceous period.
- This was about 145–66 million years ago.
- They diversified rapidly.
- Today they dominate plant life on Earth.
