ICSE 2015 Biology Question Paper for Class 10

About this paper

This is the official ICSE Class 10 Biology (Science Paper 3) question paper from the 2015 examination, paper code T15 523. Writing time is two hours, with an extra 15 minutes for reading. Section I (40 marks) is compulsory and mixes naming, correcting false statements, multiple choice, exact locations, a diagram of a stage of mitosis, structure–function pairs, fill-in-the-blanks and matching. In Section II (40 marks) candidates attempt any four of Questions 2–7, built on diagrams and experiments such as oxygen bubbles from a water plant kept with and without a snail, a bell-jar transpiration set-up, cross-sections of blood vessels, the kidney, the male urinogenital system with a Punnett square, and the heart. This copy has the questions only, without answers.

Exam

ICSE Class 10

Subject

Biology

Year

2015

Paper code

T15 523

Maximum marks

80

Time allowed

2 hours + 15 min reading

Questions

7

Pages

10

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

• Photosynthesis
• Transpiration
• Cell division
• Genetics and Mendel's laws
• Circulatory system
• Excretory system
• Human reproduction
• Sense organs: eye and ear
• Endocrine system
• Pollution and population
• Health and immunity

Questions from this paper

1. Name the structure formed by the villi of the embryo and the uterus of the mother.
2. Test-tube A contains a green water plant, and test-tube B contains a green water plant and a snail. Why does test-tube B give off more bubbles of oxygen?
3. Differentiate between tubectomy and vasectomy on the basis of the part cut and tied.
4. Draw a neat, labelled diagram of a Malpighian capsule.
5. In pea plants, round seeds (R) are dominant over wrinkled seeds (r). Draw a Punnett square to show the gametes and offspring when two plants with heterozygous round seeds (Rr) are crossed.
6. Explain the term 'greenhouse effect'.