EVERYDAY SCIENCE
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
- 11 protons, 12 neutrons, 11 electrons
- 12 protons, 11 neutrons, 12 electrons
- 11 protons, 11 neutrons, 12 electrons
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Sodium has atomic number 11, so it contains 11 protons.
- Neutrons = Mass number − Atomic number = 23 − 11 = 12.
- A neutral sodium atom has 11 electrons.
Last verified on 06-11-2026
آنتوں میں بیکٹیریا کے ذریعے گلوکوز کے تخمیر سے کون سی گیس پیدا ہوتی ہے؟
- Nitrogen
- Oxygen
- Hydrogen
- None of these
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Explanation
- Gut bacteria ferment undigested carbohydrates.
- Hydrogen can be produced during bacterial fermentation.
- Other gases, such as carbon dioxide and methane, may also be produced.
Last verified on 06-11-2026
پھول دار پودوں کا مادہ گیمیٹوفائٹ کیا کہلاتا ہے؟
- Embryo sac
- Ovule
- Ovary
- Carpel
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Explanation
- The female gametophyte of angiospermic plants is the embryo sac.
- It is also known as the megagametophyte.
- It is the haploid (containing one set of chromosomes) structure within the ovule that contains the egg cell.
- It is responsible for fertilization.
Last verified on 06-11-2026
گھاس کے میدانوں میں عام طور پر کس قسم کی نباتات پائی جاتی ہیں؟
- Dense evergreen forests
- Grasses with scattered shrubs and trees
- Mangrove forests
- None of these
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Explanation
- Grasslands are dominated by grasses and other herbaceous plants.
- Scattered bushes, shrubs and trees may also occur.
- Rainfall and climate determine the type of grassland vegetation.
Last verified on 06-11-2026
دوہری بارآوری کس گروہ کے پودوں کی خاص خصوصیت ہے؟
- Angiosperms
- Pteridophytes
- Gymnosperms
- None of these
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Explanation
- One male gamete fuses with the egg to form a diploid zygote.
- The second male gamete fuses with the polar nuclei to form the endosperm nucleus.
- This process is characteristic of flowering plants.
Last verified on 06-11-2026
جِمنوسپرمز کی خاص پہچان کیا ہے؟
- Absence of vascular tissues
- Naked seeds
- Seeds enclosed within a fruit
- None of these
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Explanation
- Gymnosperms are seed-producing plants.
- They are usually woody and evergreen.
- They do not produce flowers or fruits.
- Their seeds are exposed (not enclosed).
- They are among the oldest seed plants.
Last verified on 20-05-2026
فرن کے چھوٹے اور آزاد گیمیٹوفائٹ کو کیا کہتے ہیں؟
- Prothallus
- Protonema
- Rhizome
- None of these
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Explanation
- The prothallus is the small, usually heart-shaped gametophyte of a fern.
- It bears male and female reproductive structures.
- Fertilization requires water for sperm movement.
Last verified on 06-11-2026
ٹرانسکرپشن کے دوران آر این اے کون سا خامرہ بناتا ہے؟
- RNA polymerase
- DNA ligase
- DNA helicase
- None of these
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Explanation
- RNA polymerase uses DNA as a template to synthesize RNA.
- Transcription is the first major step in gene expression.
- The resulting RNA may later participate in protein synthesis.
Last verified on 06-11-2026
کون سا عضیہ خراب خلیاتی حصوں کو توڑنے والے خامرے رکھتا ہے؟
- Chloroplast
- Lysosome
- Ribosome
- None of these
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Explanation
- Lysosomes contain hydrolytic enzymes.
- They digest damaged organelles and cellular waste.
- They are commonly described as the digestive compartments of the cell.
Last verified on 06-11-2026
کون سا ہارمون خون میں کیلشیم کی مقدار بڑھانے میں مدد دیتا ہے؟
- Insulin
- Parathyroid hormone
- Thyroxine
- None of these
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Explanation
- Parathyroid hormone (PTH) helps increase blood calcium levels.
- It stimulates calcium reabsorption in the kidneys and indirectly increases intestinal absorption through active vitamin D.
- It also promotes calcium release from bones.
Last verified on 06-11-2026
