16.3) Sexual reproduction in plants In the flower of most plants there are both stamen (male organs) and carpels (female organs), this is a condition known as bisexual or hermaphrodite. Some plants have unisexual flowers. Insect-pollinated flowers:...
16. Reproduction
16.5) Sex hormones in humans
16.5) Sex hormones in humans Puberty: Puberty is the stage in life when a child's body develops into an adult's body. The changes take place gradually, usually between the ages of 10 and 16. Changes occur at puberty because of hormones: testosterone - produced...
16.7) Sexually transmitted infections (STIs)
16.7) Sexually transmitted infections (STIs) Sexually transmitted infection is an infection that is transmitted via body fluids through sexual contact. AIDS and HIV: Acquired immune deficiency syndrome. ( A ‘syndrome’ is a pattern of symptoms associated...
16.6) Methods of birth control in humans
16.6) Methods of birth control in humans Birth control is controlling the number of children and the time to have them. A couple may use birth control if they are not ready to have a baby yet. There are several types and methods of birth control. Types...
16.2) Sexual reproduction
16.2) Sexual reproduction Sexual reproduction: is a process involving the fusion of two gametes (sex cells) to form a zygote and the production of offspring that are genetically different from each other. Fertilisation: is the fusion of gamete nuclei....
16.1) Asexual reproduction
16.1) Asexual reproduction Asexual reproduction: is the process resulting in the production of genetically identical offspring from one parent. Bacteria: Bacteria are tiny single-celled organisms. They reproduce by a process called binary fission. In...
16.4) Sexual reproduction in humans
16.4) Sexual reproduction in humans Male reproductive system: Testes: It is a male gland which produces sperms and the male sex hormone testosterone Scrotum: it is the sac which contains the testicles Sperm Ducts: They are two muscular tubes, each connected to...