Reproduction

• Reproduction is the process that produces new individuals

  There are two types of reproduction

  • aesexual reproduction only involves one parent, offspring produced is genetically identical to the parent
  • sexual reproduction involves two parents, offspring produced are genetically different but similar to the parents
• Gametes are sex cells involved in reproduction.

  They are haploid cells meaning that they only contain half of the genetic information of diploid cells

  
  

  Gametes in animals

  • the female gametes are eggs and are produced in the ovaries
  • the male gametes are sperms and are produced in the testes

  Gametes in plants

  • the female gamete are ovules and are produced in the ovary
  • the male gamete are is pollen and are produced in the anther
• Anther- organs in the flower that produces pollen grains

  Pollen grains - male gametes produced from anthers of a flower

  Stigma- top of the female part of the flower which collects pollen grains

  Ovary- female organ in a flowering plant

  Ovules- female gametes produced from the ovaries of a flower

  Sepals- protects the unopened flower bud

  Petals- may be brightly coloured to attract insects

  Stamens- the males part of the flower consisting of the anther held up

  Nectary- produce sugary nectar to attract insects

  
• Fertilisation is when the nuclei of two haploid gametes fuse together to produce a diploid zygote which divides to form an embryo