ICSE Class 10 Biology Sample Paper 2026 by Experts: Practice for Last Minute Revision, Download PDF

Students can find quick revision materials for the ICSE Class 10 Biology (Science Paper 3) exam on Friday, March 13, 2026, from 11:00 a.m. to 1:00 p.m., to be completely prepared for the exam. We have shared sample questions developed by subject matter experts, which provide an efficient and quick way to practise and revise for the exam. 

The sample paper questions provided here closely reflect the most recent CISCE syllabus and grading scheme, giving students a strategic advantage prior to the final board examination. The questions are based on the 2026 exam framework, which includes an 80 mark external evaluation and a two-hour exam duration. These expert-curated questions cover the entire course, including important topics like Basic Biology (Cell Cycle and Genetics). Check for sample questions by experts to help prepare for ICSE Class 10 Biology paper, along with PDF link shared here.

Also check: ICSE Date Sheet 2026

ICSE Class 10 Biology Sample Paper 2026 by Experts: Exam structure 

Shared here is a detailed topic-wise marks distribution of ICSE Class Biology exam paper. The exam structure 2026 is prepared by experts as per the ICSE guidelines and paper pattern 2026 for Class 10 Maths. Use the details to revise and get acquainted with the pattern well. 

Overview of the ICSE Class 10 Biology Exam Pattern for 2026

• 100 points in total

• Theory Test: 80 Points

• Internal Evaluation: Twenty Points

• Exam Time: Two Hours

• Passing Requirements: To pass, you must receive at least 33% of the possible points.

• Internal Assessment (20 Marks)

Also check: ICSE Class 10 Biology Exam Pattern 2025-26

ICSE Class 10 Biology Sample Paper 2026, By Experts

SECTION-A (40 marks) 

(Attempt all questions from this Section.)

i) The sex chromosome in a human ovum is:

(a) X chromosome

(b) Y chromosome

(c) Both X and Y chromosome

(d) Either X or Y chromosome

(ii) Assertion (A): The foetus respires but does not breathe. Reason 

(R): The maternal blood supplies oxygen to the foetus through placenta. 

(a) A is True and R is False 

(b) A is False and R is True 

(c) Both A and R are True 

(d) Both A and R are False

iii) Assertion (A): Rods and Cones are photoreceptors in the sclera of eyeball. 

Reason (R): Rods are sensitive to dim light. 

(a) A is True and R is False. 

(b) A is False and R is True. 

(c) Both A and R are True. 

(d) Both A and R are False.

(iv) While studying the stages in the evolution of man, a well-developed chin is observed in

(a) Homo habilis 

(b) Homo erectus 

(c) Homo sapiens 

(d) Australopithecus

(v) Rahul inserted a hairpin into his right ear to remove ear wax. He felt a sudden sharp pain with loss of hearing. This was due to: 

(a) Rupture of eardrum 

(b) Rupture of vestibule 

(c) Rupture of cornea 

(d) Rupture of pinna

vi) During the synthesis phase of the cell cycle, more of:

(a) RNA is synthesised

(b) RNA and proteins are synthesised

(c) DNA is synthesised

(d) Glucose is synthesised

vii) A biology teacher asked her students to give two examples of vestigial organs in the human body. Raj said: Wisdom teeth and Pinna. Sonu said: Body hair and large intestine. Lata said: Vermiform appendix and wisdom teeth. Abhay said: Pinna and Ossicles. Who was correct? 

(a) Abhay and Sonu 

(b) Sonu and Lata 

(c) Raj and Lata 

(d) Abhay and Raj

viii) The paper used to demonstrate unequal transpiration in a dicot leaf is:

(a) Filter paper

(b) Litmus paper

(c) Starch paper

(d) Cobalt chloride paper

SECTION-B (40 marks)

(Attempt any four questions from this Section.)

Question 2 

(i) Name the following: 

(a) The basic units of heredity.

(b) The undesirable change in the environment leading to its deterioration. 

(c) The structure that connects placenta and the human foetus. 

(d) The statistical study of human population. 

(e) The nitrogenous base that pairs with adenine.

Question 3

(i) Write the overall chemical equation for photosynthesis 

(ii) Mention any two functions of blood. 

(iii) Differentiate between Karyokinesis and Cytokinesis. 

(iv) Excessive use of fertilisers in agricultural fields reduces

the yield of crops. Justify the statement. 

Question 4 

(i) Explain the abbreviation - DNA. 

(ii) What is Active transport? 

(iii) Mention the two pairs of nitrogenous bases which pair with each other with hydrogen bonds. 

(iv) State Mendel's Law of Segregation'.

(v) Draw a neat, labelled diagram of a human sperm.

Question 5 

(i) Mention one characteristic of roots for absorbing water from the soil. 

(ii) What is Parthenocarpy? Give one example. 

(iii) State the difference between Micturition and Parturition. 

(iv) Write any two functions of Lymph. 

Question 6 

(v) Study the picture given below and answer the questions: 

(a) How does water get polluted? 

(b) What is the effect of water pollution on human life? 

(c) Mention one control measure to stop the pollution of water bodies.

Question 7

(i) What is the scientific name of the pea plant that Mendel used for his experiments? 

(ii) Mention the surgical methods of contraception in: 

(a) Men 

(b) Women. 

(iii) Name two harmful effects of noise pollution. 

(iv) Which parts of a plant exhibit: 

(a) Negative Geotropism 

(b) Positive Hydrotropism. 

Question 8

(v) Kathak is an Indian classical dance which involves a lot of spinning by the dancers. The learners of this dance experience dizziness in the beginning while spinning. 

(a) Name the part of the membranous labyrinth responsible for this dizziness.

(b) Give a suitable reason for your answer. 

(c) Mention the nerve that carries the impulse for dizziness to the brain. 

Question 9

(i) How does transpiration help in the uptake of water from the soil? 

(ii) Given below are two statements which are incorrect. Rewrite the correct statements:

(a) Fresh water fish when placed in hypertonic salt solution absorb water and burst. 

(b) Seminiferous tubules secrete Testosterone. 

(iii) During Mitosis what is the position of chromatids in: 

(a) Metaphase 

(b) Anaphase. 

(iv) Chris was watching the display of fireworks in the sky. 

(a) Trace the path of the light rays using the following terms: Fovea, Lens, Conjunctiva, Pupil, Cornea. 

(b) Name the nerve that carries the impulse for vision to the brain. 

(v) Draw a neat, labelled diagram of a Malpighian Capsule.

Question 10

(i) Define the term Mutation. 

(ii) A pure breeding red flower variety of pen plant (RR) is crossed with a pure breeding white flower variety of pea plant (rr). Draw a Punnett square to find out the Phenotypic and Genotypic ratios of the progeny belonging to the F2 generation. 

(iii) Leaves of certain plants roll up on a hot sunny day. Explain by giving suitable reasons. 

(iv) What is the semi permeable membrane? Name the semi permeable membrane present in a plant cell.

ICSE Class 10 Biology Sample Paper by Experts 2026: Download PDF 

Students can access complete ICSE Class 10 English Biology sample paper 2026 questions, prepared by experts from the link shared here. The link to PDF contains major questions shared here for ICSE class 10. Access the direct link to download the PDF from the table shared here and start practicing. Good Luck!

Also Check

ICSE Class 10 Syllabus 2025-2026

ICSE Class 10 Question Papers 2025 with Answer Keys