ICSE 2018 Biology Solved Paper for Class 10

About this paper

This is the ICSE Class 10 Biology question paper from the 2018 board examination, with an answer written after every question, including labelled diagrams and a full dihybrid Punnett square. Writing time is two hours, plus 15 minutes of reading time. Section I (40 marks) is compulsory: naming, multiple choice, a paragraph on the starch test, matching hormonal disorders with their causes, correcting statements, choosing between two options, a picture-based question on a type of pollution, and odd one out. In Section II (40 marks) candidates attempt any four of Questions 2–7, on cell division, fertilisation, photosynthesis in variegated leaves, the reflex arc, the nephron, a blood smear, transpiration, and a cross between pea plants with green inflated and yellow constricted pods.

Exam

ICSE Class 10

Subject

Biology

Year

2018

Maximum marks

80

Time allowed

2 hours + 15 min reading

Questions

7

Pages

13

Answers included

Yes

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 division
• Photosynthesis
• Transpiration
• Osmosis and absorption by roots
• Genetics and Mendel's laws
• Nervous system and reflex action
• Endocrine system
• Sense organs: eye and ear
• Circulatory system and blood
• Excretory system
• Human reproduction
• Pollution

Questions from this paper

1. Name the wax-like layer on the epidermis of leaves which reduces transpiration.
2. Mention the exact location of the pulmonary semilunar valve.
3. Explain the term 'gestation'. How long does gestation last in humans?
4. Mention the three main steps involved in the formation of urine.
5. Give a biological explanation: all food chains begin with green plants.
6. Give a biological explanation: we should not put sharp objects into our ears.