Introduction to biology and branches — KCSE Biology

KCSE Biology · 92 practice questions · 3 syllabus objectives

31 easy31 medium30 hard

What You'll Learn

Key learning outcomes for this topic, aligned to the KNEC KCSE syllabus.

Introduction to biology and branches

State what biology is and its main branches

State the importance of studying biology

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easySHORT ANSWER4 marks

Define the term 'biology' and identify two branches of biology that focus on plant studies. (4 marks)

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Part (a) — 2 marks

Biology is the science that deals with the study of living organisms. (2 mks)

Part (b) — 2 marks

Botany (1 mk)

Plant Physiology (1 mk)

easySHORT ANSWER3 marks

State three benefits of studying biology in relation to human health. (3 marks)

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Part (a) — 3 marks

Informs the understanding of diseases and their treatments (1 mk)

Facilitates the development of vaccines to prevent illnesses (1 mk)

Promotes healthy lifestyle choices through knowledge of nutrition (1 mk)

easySHORT ANSWER2 marks

State two ways in which the study of biology enhances food security. (2 marks)

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Part (a) — 2 marks

Improves crop yields through genetic modification (1 mk)

Enhances pest resistance in plants through biotechnology (1 mk)

List three sub-disciplines within genetics. (3 marks)

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