Edexcel IGCSE Biology: Double Science 复习笔记 3.1.7 Human Sex Hormones Secondary Sexual Characteristics Primary sexual characteristics are present during development in the uterus and are t...
Edexcel IGCSE Biology: Double Science 复习笔记 3.1.6 Pregnancy Implantation & Development of the Foetus After fertilisation in the oviduct, the zygote travels towards the uterus This usu...
Edexcel IGCSE Biology: Double Science 复习笔记 3.1.5 Sexual Reproduction in Humans The Male Reproductive System The male reproductive system Male Reproductive Str...
Edexcel IGCSE Biology: Double Science 复习笔记 3.1.4 Asexual Reproduction in Plants Asexual Reproduction in Plants Plants can reproduce asexually as well as sexually Asexual reproduction onl...
Edexcel IGCSE Biology: Double Science 复习笔记 3.1.3 Practical: Conditions for Germination Practical: Conditions for Germination Germination is the start of growth in the seed Three factors ...
Edexcel IGCSE Biology: Double Science 复习笔记 3.1.2 Sexual Reproduction in Flowering Plants Pollination Flowers are the reproductive organs of plants They usually contain both male and fema...
Edexcel IGCSE Biology: Double Science 复习笔记 3.1.1 Types of Reproduction Sexual Reproduction Sexual reproduction is: The process involving the fusion of the nuclei of two gametes to...
Edexcel IGCSE Biology: Double Science 复习笔记 2.10.12 The Role of Hormones The Role of Hormones: Basic A hormone is a chemical substance produced by a gland and carried by the blood, which ...
Edexcel IGCSE Biology: Double Science 复习笔记 2.10.11 The Endocrine System The Endocrine System Information is sent through the endocrine (hormonal) system as chemical substances known as h...
