ICSE 2017 Biology Question Paper for Class 10

About this paper

This is the official ICSE Class 10 Biology (Science Paper 3) question paper from the 2017 examination, paper code T17 523. Writing time is two hours, plus 15 minutes of reading time. Section I (40 marks) is compulsory and includes naming, multiple choice, correcting underlined words, arranging terms in a logical sequence, odd one out, analogy pairs, matching and a diagram of an endocrine gland. In Section II (40 marks) candidates attempt any four of Questions 2–7, built on diagrams of a stage of mitosis, a plasmolysed plant cell, the bell-jar experiment with a mouse and a green plant, a section of the testis, the heart and the brain, plus a monohybrid cross. The paper has questions only, without answers.

Exam

ICSE Class 10

Subject

Biology

Year

2017

Paper code

T17 523

Maximum marks

80

Time allowed

2 hours + 15 min reading

Questions

7

Pages

11

Answers included

No, questions only

Paper pattern

• Section I

  40 marks

  Question 1, compulsory, with eight five-mark parts (a)–(h)

• Section II

  40 marks

  Questions 2–7, attempt any four; each has two five-mark parts

Topics covered

• Cell cycle and cell division
• Absorption by roots and plasmolysis
• Photosynthesis
• Genetics and Mendel's laws
• Circulatory system
• Excretory system
• Human reproduction
• Nervous system and the brain
• Sense organs: eye and ear
• Endocrine system
• Pollution
• Population and health

Questions from this paper

1. Name the pituitary hormone which stimulates contraction of the uterus during childbirth.
2. Arrange the following terms in a logical sequence: Receptor, Spinal cord, Effector, Motor neuron, Sensory neuron.
3. Differentiate between an antibiotic and an antibody on the basis of their source.
4. Give a biological reason: the left ventricle of the heart has a thicker wall than the right ventricle.
5. What causes the heart sounds 'LUBB' and 'DUP'?
6. In pea plants, axial flowers (A) are dominant over terminal flowers (a). Draw a Punnett square to show the gametes and offspring when both parent plants are heterozygous for axial flowers.