Biology Secondary Form 4

Longhorn Secondary Biology Series is a course developed in line with the curriculum implemented in 2003. It fulfills all the goals and targets of the secondary Biology syllabus. It is approved by the Ministry of Education to be used in secondary school in Kenya. 

Longhorn Secondary Biology Series makes learning Biology easier and enjoyable by: 
• presenting Biology as a practical oriented subject which helps the learner in being initiative in the learning process. 
• presenting the contents in well and logically organised topics which facilitate sequential transition from one concept to the next. 
• providing activities and exercises which allow performance evaluation in each topic. 
• having a user-friendly approach which is well-centered on the learner's own environment for easier understanding.
• Integration of text and illustrations which aid and demonstrate concepts for easier understanding. 
• taking care of learners with special needs. 

Longhorn Secondary Biology Form 4 adequately and appropriately covers the topics outlined in the Biology syllabus for Form 4. 

The book is written by highly experienced authors and examiners of Biology.

1. Genetics

Lead	Chapter
1.1.	Introduction Free chapter!
1.2.	Concepts of genetics
1.3.	The first Law of Heredity
1.4.	Sex determination in humans
1.5.	Gene linkage
1.6.	Mutations
1.7.	Practical applications of genetics
1.8.	Summary and end of unit test

2. Evolution

Lead	Chapter
2.1.	Introduction
2.2.	Evidence of organic evolution
2.3.	Mechanisms of evolution
2.4.	Natural Selection in Action
2.5.	Summary and end of unit test

3. Reception, response and coordination in plants and animals

Lead	Chapter
3.1.	Introduction
3.2.	Reception, response and coordination in plants
3.3.	Reception, response and coordination in animals
3.4.	The role of hormones in mammal coordination
3.5.	The effects of drug abuse on human health
3.6.	Sense organs. The eye
3.7.	Sense organs. The ear
3.8.	Summary and end of unit test

4. Support and movement in plants and animals

Lead	Chapter
4.1.	Introduction
4.2.	Support and movement in plants
4.3.	Support and movement in animals
4.4.	Support and movement in mammals (1)
4.5.	Support and movement in mammals (2)
4.6.	Summary and end of unit test
4.7.	Appendix. Guide to studying and taking an exam in Biology