Biology is considered one of the most challenging subjects at the Intermediate level. The syllabus is lengthy, conceptual, and requires regular revision. Because of this, students often feel confused about important topics, short questions, and long questions that are likely to appear in the exam.
To help students prepare in a focused and practical way, 11th Class Biology Guess Papers 2026 have been compiled according to:
- Punjab Textbook Board syllabus (2026)
- Latest paper pattern used by Punjab Boards
- Analysis of past 10 years’ papers
- Frequently repeated short and long questions
These guess papers are designed to support revision, not replace proper study. When used alongside textbooks and notes, they can help students identify high-priority topics and revise efficiently.
11th Class Biology Guess Papers 2026
The Biology Guess Papers for Inter Part-1 include:
- Chapter-wise short questions
- Important long questions
- Objective and subjective preparation
- Coverage aligned with current examination trends
The questions listed below have appeared repeatedly in board exams or are strongly linked with core concepts.
Important Short Questions – 11th Class Biology Guess Paper 2026
(Chapters: 2, 3, 8, 10, 11)
- Define transfer RNA (tRNA) and messenger RNA (mRNA).
- Describe different types of RNA molecules.
- Differentiate between saturated and unsaturated fatty acids.
- Draw peptide linkage between glycine and alanine.
- Draw the structures of ribofuranose and glucopyranose.
- How do fibrous proteins differ from globular proteins?
- How is a peptide bond formed? Illustrate with a diagram.
- What are conjugated molecules? Give examples.
- What are waxes? Describe their chemical composition.
- Define ester and express it with an equation.
- State the function of mRNA.
- Why does water have a high heat capacity? Explain its importance.
- Write the general formula of an amino acid (with sketch).
- Define enzyme inhibitors and state their types.
- Explain feedback inhibition with a diagram.
- Differentiate between activator and prosthetic group.
- Compare competitive and non-competitive inhibitors.
- Differentiate between reversible and irreversible inhibitors.
- Differentiate between apoenzyme and holoenzyme.
- How do irreversible inhibitors affect enzyme activity?
- Explain the effect of pH on enzyme activity.
- Define optimum pH of an enzyme with example.
- What is an active site? Name its regions.
- Define cofactors and list their types.
- What is the induced-fit model of enzyme action? Who proposed it?
- Define optimum temperature of an enzyme.
- Why are enzymes denatured at high temperatures?
- Differentiate between lock-and-key model and induced-fit model.
Fungi and Related Topics (High-Frequency Questions)
- Differentiate between plasmogamy and karyogamy.
- Define clear mitosis in fungi.
- What is parasexuality? In which fungi is it found?
- Compare obligate parasites with facultative parasites.
- Name four plant diseases caused by fungi.
- What is histoplasmosis? How does it spread?
- Define lichen and state its significance.
- What is mycorrhiza? Explain its importance for plants.
- Differentiate between endomycorrhizae and ectomycorrhizae.
- Describe structural characteristics of Penicillium.
- What is a carnivorous fungus? Give examples.
- Differentiate between septate and non-septate hyphae.
Animal Kingdom & Zoology (Most Expected)
- Define placenta and state its function.
- Differentiate between amniotes and anamniotes.
- Differentiate between Parazoa and Eumetazoa.
- Compare spiral and radial cleavage.
- State three fundamental characteristics of chordates.
- Summarize the importance of sharks.
- Define diploblastic animals.
- What are gemmules? Mention their function.
- Describe reptilian features of Archaeopteryx.
- Define hermaphrodite with example.
- Explain metamorphosis.
- Define polymorphism with example.
- Write affinities of echinoderms with chordates.
- Write parasitic adaptations of flatworms.
- Define swim bladder and its function.
- Differentiate between radial and bilateral symmetry.
- Define infestation and explain how it occurs.
- Differentiate between protostomes and deuterostomes.
Bioenergetics & Photosynthesis (Very Important)
- Define bioenergetics.
- Explain chemiosmosis.
- Define photosynthesis with equation.
- Differentiate between absorption spectrum and action spectrum.
- Compare alcoholic and lactic acid fermentation.
- What are accessory pigments and their role?
- Define action spectrum.
- What is a spectrophotometer? State its uses.
- Explain photolysis of water.
- Describe Z-scheme of photosynthesis.
- Differentiate between photophosphorylation and oxidative phosphorylation.
Additional Chapters – Important Short Questions
(Chapters: 1, 4, 7, 9, 14)
- Define biosphere.
- What is ecosystem? Give an example.
- Differentiate between anatomy and morphology.
- Define biotechnology.
- Explain hydroponic culture and its uses.
- Write salient features of cell theory.
- Explain fluid mosaic model.
- Differentiate between phagocytosis and pinocytosis.
- Write functions of cytoplasm.
- Define nucleolus and its function.
- What are storage diseases? Give example.
Long Questions – 11th Class Biology Guess Paper 2026
Chapter 1 & 14
- What is cloning? Discuss its methods and applications.
- Describe biological organization at cellular and organelle level.
- Discuss conservation of environment.
Chapter 2 & 8
- Describe types of RNA.
- Explain Watson and Crick model of DNA.
- Discuss economic importance of fungi.
Chapter 4 & 12
- Explain structure and function of chloroplast (with diagram).
- Describe digestion and absorption in small intestine.
Chapter 5 & 11
- Explain binomial nomenclature and its rules.
- Describe life cycle of bacteriophage.
- Explain Calvin cycle in detail.
Intermediate 1st Year Guess Papers – Other Subjects (2026)
- English
- Urdu
- Islamiat
- Biology
- Chemistry
- Physics
- Mathematics
- Computer Science
Final Note for Students
These 11th Class Biology Guess Papers 2026 are prepared for revision and practice, not for shortcut learning. Students are strongly advised to:
- Read Punjab Textbook thoroughly
- Use guess papers to identify high-weight topics
- Practice diagrams and definitions regularly
Smart preparation, not panic, leads to success.
Fahad Munir is an experienced Pakistani education writer at Webstudy.pk focusing on study guides, market rates, and learning resources with clear, practical insights for students.
