30 April RAS Mains Answer Writing

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Subject – General Science

Topic – The Cell, Blood groups, Composition and Functions of Blood, Hormones

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Biology PYQs – Click Here

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Q1 What are the major differences between plant and animal cells?(2M)


CharacteristicPlant CellsAnimal Cells
Cell WallPresentAbsent
ShapeGenerally rectangular or square-shapedGenerally round or irregularly shaped
VacuoleLarge central vacuoleSmall or multiple vacuoles
Plastids Present (for photosynthesis)Absent
Energy StorageIn form of Starch (in chloroplasts)In form of Glycogen (in cytoplasm)
CentriolesAbsentPresent (during cell division)
Nucleus Peripheral nucleusCentral nucleus 

Q2 Describe the dual role of the pancreas in both the digestive and endocrine systems.(5M)


The pancreas is classified as a mixed gland because it has both endocrine and exocrine functions.

Q3 What are the main components of blood, and what are their respective functions?(10M)


Blood is a red coloured, thick and slightly alkaline, connective tissue consisting of a fluid matrix, plasma, and formed elements.

  1. Plasma : 55 %  : 
    • Water 90-92 %, Proteins , Minerals like (Na+, Ca+2, Mg+2 etc)
    • Functions:
      1. Maintains osmotic pressure, transports hormones and fatty acids, regulates blood pH (Albumin).
      2. Recognizes and neutralizes pathogens, key role in the immune system (Globulins).
      3. Essential for blood clotting (Fibrinogen).
      4. Transport of digestion products, waste, and hormones.
      5. Maintains temperature and acid-base equilibrium in the blood.
    • Electrolytes like sodium, potassium, bicarbonate, chloride, and calcium help maintain blood pH.
  2. Formed Elements : The cells of blood are Red Blood Corpuscles (RBC) and White Blood Corpuscles (WBC) and cell fragments, the Platelets. Blood cells are formed in the bone marrow

Q.4 निम्नाकिंत अनुच्छेद का हिन्दी में अनुवाद कीजिएः  [RAS Mains 2018]

Man is the image of God. He symbolizes his infinite beauty, goodness, grace of body and mind. He is his earthly symbol, his image on earth. And he who is honest is the noblest of God’s works. Honesty implies sacrifice, transparency of truth, sincerity of heart, earnestness of purpose, devotion of high ideals, work for the benefit of humanity. An honest man is prepared to wear the crown of thorns and suffer martyrdom for the glory of God and for the establishment of God’s kingdom on this earth. He is the noblest handiwork of God.  


मनुष्य ईश्वर का प्रतिरूप है। वह अपनी अनंत सुंदरता, अच्छाई, शरीर और मन की कृपा का प्रतीक है। वह उसका सांसारिक प्रतीक है, पृथ्वी पर उसकी छवि है। और जो ईमानदार है वह भगवान के कार्यों में सबसे उत्तम है। ईमानदारी का अर्थ है त्याग, सत्य की पारदर्शिता, हृदय की ईमानदारी, उद्देश्य की ईमानदारी, उच्च आदर्शों की भक्ति, मानवता के हित के लिए कार्य करना। एक ईमानदार आदमी भगवान की महिमा के लिए और इस धरती पर भगवान के राज्य की स्थापना के लिए किसी भी प्रकार के दुखों को सहन करने और शहीद होने के लिए तैयार रहता है। वह भगवान की सबसे उत्तम रचना है।

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