Official CBSE Practice Papers for Class 11 Biology
Review targeted exam resources with the CBSE Class 11 Biology Sample Paper Set 25. Built according to official CBSE standards for the 2026-27 academic year, these downloadable Class 11 Biology sample papers support effective revision and performance tracking.
Solved Model Papers for Biology
Navigate directly to the solved Biology model papers using the digital viewer below. Each practice set includes detailed solutions, allowing students to instantly cross-check their work and identify areas requiring further revision.
SECTION – A
Q.1 Name the scientist who proposed the system of binomial nomenclature.
Q.2 How systematic differs from Taxonomy.
Q.3 Name the simplest form of carbohydrate, protein and fat after digestion.
Q.4 Name the respiratory organ of the following –
a) Insects b) Tadpole c) Fish d) Man
Q.5 What is the full form of FMN and FAD?
SECTION – B
Q.6 Give a labelled diagram of Fluid Mosaic Model.
Q.7 a) Name the types of chromosomes on the basis of position of centromere.
b) Name the organelles which comprises the endomembranous system.
Q.8 Give a graph to show Activation Energy requirement of non-catalysed and enzyme catalysed
reactions.
Q.9 Give the difference between peptide bond, glycosidic bond and ester bond. Explain the
difference by showing bond formation.
Q.10 Draw a labelled diagram to show the duct system pouring into duodenum.
OR
Explain in short - a) Tidal volume b) Residual volume
SECTION – C
Q.11 a) Name the two fluids which circulates in the body of mammals.
b) Name the major site where RBC is produced.
c) Name two chemicals secreted by basophils.
d) Where Rh factor is found in the blood of humans.
Q.12 Differentiate between the following :
i) Zoospore and Aplanospore
ii) Phyllotaxy and Venation
iii) Coccus and Bacill
Q.13 Draw a well labelled diagram to show the different types of aestivation in a flower.
Q.14 a) Name the group to which these organisms belong :
i) Nostoc ii) Euglena iii) Rhizopus iv) Penicillium
b) What are Lichens?
Q.15 a) Give examples of saturated and unsaturated fatly acids.
b) Differentiate between homopolymer and heteropolymer with example.
c) What is competitive inhibition?
Q.16 a) Draw a well labelled diagram of Anaphase of Mitosis.
b) How Anaphase of Mitosis differs from Anaphse-I of Meiosis?
Q.17 a) Name the 4 layers of Alimentary canal.
b) Name the associated glands of digestive system.
c) Give the function of HCl in stomach.
Q.18 Give the function of the following.
a) C-shaped cartilage in trachea b) Pleura c) Diaphragm
d) Larynx e) epiglottis f) Carbonic anhydrase
Please click the link below to download CBSE Class 11 Biology Sample Paper Set Y
Free study material for Biology
Download CBSE Sample Papers: Class 11 Biology
Download Sample Paper: CBSE Class 11 Biology Sample Paper Set 25 (Class 11 Biology)
Explore downloadable sample sets for Class 11 Biology. Utilizing the CBSE Class 11 Biology Sample Paper Set 25 allows learners to gauge exam readiness and master official CBSE assessment structures.
Key Advantages of Solving CBSE Class 11 Biology Sample Paper Set 25
- Exam Blueprint: Understand mark allocations and structural guidelines relevant to Class 11 evaluations.
- Targeted Improvement: Identify weak areas in Class 11 Biology requiring focused revision.
- Pacing & Precision: Practice mixed question formats to build execution speed and ensure timely paper completion.
Steps to Follow After Completing CBSE Class 11 Biology Sample Paper Set 25
- Verify Answers: Compare your responses against professional teacher solutions provided in the sample paper keys.
- Error Analysis: Class 11 learners must review incorrect answers carefully to understand underlying mistakes.
- Concept Reinforcement: Consult the official NCERT book for Class 11 Biology when stuck before re-attempting problems.
FAQs
You can download the complete PDF for CBSE Class 11 Biology Sample Paper Set 25 for free from StudiesToday.com. Our resources for Class 11 Biology are updated for the latest academic session and follow the official exam pattern.
Yes, CBSE Class 11 Biology Sample Paper Set 25 comes with detailed, teacher-verified solutions. We have provided step-by-step answers for Biology to help students of Class 11 understand correct methodology and marking scheme.
Practicing this Biology paper helps in time management and identifying important topics. For Class 11, solving mock papers is the best way to gain confidence and reduce exam-day anxiety.
Yes, all our study materials for Class 11 Biology are provided in a mobile-friendly PDF format. You can easily download CBSE Class 11 Biology Sample Paper Set 25 on your mobile device.