Class 11 Zoology Target paper 2025

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Class XI (Zoology)

Target paper 2025 


Section "A"

(Multiple choice questions)


Note: This section consists of 16 part questions and all are to be answered.

Section "B"

(Short Question - Answer)


Note: Attempt any 8 part questions in all. Select four reasoning questions and four non-reasoning questions. All part questions carry equal marks.


"Non-Reasoning questions"


  • Explain terpenoids and its type?
  •  Write the factors affecting enzyme activity?
  •  Write note on key and lock model?
  • Write classification of enzyme?
  •  Difference b/w Arteries and veins? 
  • Write a note on structure of Gene? 
  • What is inflammatory response? 
  • Difference b/w RNA and DNA?
  •  Write any four characteristics of enzymes? Describe Transport of O2 and CO2? 
  • Defines sub classes of Mammalia? 
  • Economic importance of Phylum Cnidaria & Annelida?
  •  Write a note on LUB and DUB, ECG, Pyrexia, cytotoxicity? 
  • What is Phagocytosis, Name some WBCs acting as Phagocytes? 
  • What is the role of Haemoglobin and Myoglobin in the respiratory Pigment?
  • Define Vaccine, Name types of Vaccines?Definition: 
  •  Protostomes, Deuterostomes
  • Hibernation, Aestivation.
  • Difference between: 
  • Inspiration & Expirations 
  • Cartilaginous & bony fishes 
  • Radial and bilateral symmetry
  •  Inhibitor and Activator 
  • Saturated & Unsaturated Glycerol


"Reasoning questions"


➤Why blood flow faster in arteries? 
➤Why DNA is different from RNA? 
➤Why birds can fly but reptiles can't fly? 
➤How Natural killer cells work? 
➤How Co₂ from cell transport to lungs? 
➤Why rate of breathing increase in human beings? 
➤Why haemoglobin is absent from blood of insects?

➤why are amphibians successful land vertebrates?

 ➤Why do capillaries have single layer of Endothelium? 

➤ Why fats provide more energy than Carbohydrates? 

➤ Why water molecules are called amphoteric in nature? 

➤ How the tumor cells are dealt with by our immune system? 

➤ Why Protostomes or flat worms or amino acids are named so? 

➤ Why breathing of human beings called negative Pressure breathing? 

➤ Why hairs and mucous glands are Present in nostrils and trachea? Why sponges placed in animal Kingdom, when it lacks tissue organization? 

➤ Why echinoderms are placed in bilateral when adults are radially symmetrical?


Section "C"

(Detailed Answer Question)


➤ What is cytotoxicity? Explain the mechanism of NK cells and Tc cells?



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